Installation Manual
500 WATT MONO CONSTANT POWER AMPLIFIER
RS 500
2
Important Safety
Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. In-
stall in accordance with the manufacturer’s
instructions.
8. Do not install near any heat sources such
as radiators, heat registers, stoves, or
other apparatus (including ampliers) that
produce heat.
9. Protect the power cord from being walked
on or pinched particularly at plugs, conve-
nience receptacles, and the point where
they exit from the apparatus.
10. Only use attachments/accessories speci-
ed by the manufacturer.
11. Unplug this apparatus during lightning
storms or when unused for long periods of
time.
12. Refer all servicing to qualied service
personnel. Servicing is required when
the apparatus has been damaged in any
way, such as power-supply cord or plug is
damaged, liquid has been spilled or objects
have fallen into the apparatus, the appara-
tus has been exposed to rain or moisture,
does not operate normally, or has been
dropped.
13. This apparatus shall not be exposed to
dripping or splashing, and no object lled
with liquids, such as vases or glasses, shall
be placed on the apparatus.
The lightning ash with arrowhead
symbol within an equilateral triangle
is intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure, that may be
of sucient magnitude to constitute a risk of
electric shock to persons.
The exclamation point within an
equilateral triangle is intended to alert
the user of the presence of import-
ant operating and maintenance (servicing)
instructions in the literature accompanying the
appliance.
Caution: to reduce the risk of electric shock,
do not remove the top cover. There are no
user-serviceable parts inside. Refer servicing to
qualied personnel.
This equipment has been tested and found
to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable
protection against harmful interference in a
residential installation.
This equipment generates, uses, and can radi-
ate radio frequency energy and, if not installed
and used in accordance with the instructions,
may cause harmful interference to radio com-
munications. However, there is no guarantee
that interference will not occur in a particular
installation.
If this equipment does cause harmful interfer-
ence to radio or television reception, which can
be determined by turning the equipment o
and on, the user is encouraged to try to correct
the interference by one or more of the follow-
ing measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equip-
ment and the receiver.
• Connect the equipment into an outlet on
a circuit dierent from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/
TV technician for help.
CAUTION: Changes or modications to this
device not expressly approved by AudioControl
Inc. could void the user’s authority to operate
the equipment under FCC rules.
Recycling notice: If the time comes
and this apparatus has fullled its
destiny, do not throw it out into the
trash. It has to be carefully recycled
for the good of mankind, by a facility specially
equipped for the safe recycling of electronic
apparatii. Please contact your local or state
recycling leaders for assistance in locating a
suitable nearby recycling facility. Or, contact us
and we might be able to repair it for you.
Important Safety Instructions
3
Installation Manual
Subwoofer Amplier
RS 500
Table of Contents
Table of Contents
Important Safety Instructions .......2
Introduction .......................4
Features ..........................5
Getting Started ....................8
Installation Examples ..............9
Front Panel Features ...............12
Rear Panel Features ................13
Speaker Wiring ....................16
12 Volt Trigger Ins and Outs .........18
Ventilation ...................... 19
Internet Connectivity and Control ....20
Webpage Conguration ........... 23
Acoustics ....................... 28
Equalization .......................30
Advanced Discussions ..............31
Troubleshooting ...................33
Block Diagram .....................35
Specications ......................36
Service ............................37
The Warranty ......................38
The Dance .........................40
©2020 AudioControl Inc., all rights reserved.
Based on a true story, an audio dream for a better life.
Network Settings
Default IP Address 192.168.0.249
4
Flowery Marketing Introduction
When a high-performance audio system,
be it in a home theater space or as part of
a whole house distributed system, de-
mands high levels of audio performance,
the AudioControl RS 500 amplier deliv-
ers. With the RS 500 requiring only one
rack space, it delivers astonishing power
into any common speaker load. Designed
with high performance in mind, these am-
pliers are stable into 2 ohms while also
being able to deliver that 2 ohm power
into higher impedances – that’s right, at
2, 4, 6 or 8 ohms, power output from this
is amp is always the same - making these
models perfect for any pairing with your
favorite subwoofer.
Congratulations!
You are now installing a component which
will dramatically improve the performance
of any audio system where a passive
subwoofer is used. With speaker proles
that are EQ’ed by the speaker manufac-
turers, this amp can be customized and
matched to your speaker with a click of a
button. With the ease of set up with Eth-
ernet control, you can further design your
sound performance to address any room
anomalies via the available intuitive DSP
Introduction
resources from the on-board web pages.
This along with the unparalleled energy
eciency, rack saving compact design,
superb sound quality and bulletproof
reliability are just a few features of the RS
mono amplier family.
5
Installation Manual
Subwoofer Amplier
RS 500
Features
Features
• Inputs and outputs
The RS ampliers come replete with
all analog IO needed to integrate
into any system. Balanced, unbal-
anced stereo, LFE and speaker level
inputs give you the options you need
when hooking up your connections.
Each input has a corresponding loop
output so if you need to connect
multiple amps using the same
signal, look no further. A xed high
pass output option is there for all of
you who want to add killer bass to
a 2-channel system – 2.1 has never
been more convenient!
• Power
It’s a constant power output regard-
less of speaker impedance. Same
power at 8 ohms that you have at 2
ohms.
• Superior Sound
Pristine sonics happens rst in all
AudioControl designs and is not
compromised by any other feature
• Unparalleled Energy
From the point of view of saving
electricity, the amplier has
no equal. It is VERY energy ecient
during operation, and equally im-
pressive during standby
• Ethernet Control
Via a browser or Telnet commands,
you can control and query almost all
functions, mute the amp, recall EQ
presets, check system health, display
protection logs and get an email if
something goes wrong.
• Signal Processing
You have at your command: para-
metric equalization, graphic equal-
ization, speaker model specic DSP
proles, high and low frequency
cuto lters, control over phase in
5-degree increments, AccuBass to
sweeten any recorded material, and
delay to time align frequency arrival
at the listening position. Perfect for
any type of installation or application!
• Protection features
Protection features are expensive
and include thermal, short-circuit,
clipping, over-current and DC oset
protection among others. In most
instances, the amplier will reset by
itself however if the fault is persistent
(like the speaker wire is shorted),
then it will shut down and will require
a reboot
• Pacic Northwest Heritage
We make this product in the USA,
and we are very proud of that fact.
What is more important is the care
we craft in at every step, and the
extensive knowledge we have in all
aspects of the product. Plus, we back
this up with a conditional ve year
warranty.
6
Complimentary Features
Features continued
• DHCP: An IP address is obtained via
DHCP by default. If a DHCP server
is not found on the network, the
RS500 will default to 192.168.0.249.
• Import/Export: Exporting and Import-
ing of the amplier’s settings – includ-
ing EQ settings – has been enabled.
Now you can congure your EQ set-
tings as a template and apply these to
each RS500 amplier in your system. A
little rening of those settings for each
amp and you will be in and out in no
time.
• Speaker proles
These proles are developed by the
speaker manufacturer and are made
available to you via the on-board DSP
interface. You can select your brand
and then the model to enable the spe-
cic DSP curve dened by the speaker
manufacturer.
• Constant power into 2, 4, 6 and 8
ohm speakers
• Ecient power ampliers and power
supplies
• Power consumption is less than 2
watts in standby
• Rack Mountable 1U form factor
• Removeable rack ears
• Lightweight but strong and powerful
• Stackable with Avalon/Pantages/Sa-
voy G4 ampliers
• Signal sensing for auto turn on
• Super wonderful signal processing
allows for wide variety of EQ options
and adjustments
• 12V master trigger usable with con-
tact closure or 12V external source
• Soul-satisfying array of analog input
options
• Loop outs on each line level input
• High Pass option on stereo input loop
outputs
• Control over signal phase and delay
7
Installation Manual
Subwoofer Amplier
RS 500
Quick View
Quick View
Front Panel
3. Power Button
4. Rack Mount Ears
Rear Panel
11. Speaker level input
12. Speaker output
13. Ground lift switch
14. Master trigger
15. Trigger status LED
16. 12v trigger input
17. Infra Red input
18. AC inlet
19. Fuse
20. Main power switch
1. Ethernet port
2. Master reset
3. Light bar brilliance setting
4. Balanced XLR input
5. Balanced XLR loop output
6. LFE loop output
7. LFE discrete input
8. Stereo input
9. Stereo loop output
10. High Pass lter
1. Power status LED
2. Light bar
1 2 3 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
8
Getting Started
1. Turn o power to all com-
ponents before making any
connections.
2. When making connections, des-
ignate red RCA plugs as right, and
designate white, black, or gray plugs
as left. This is a good idea for all sig-
nal connections made in your audio
system. The key is consistency. Stick
with the same color coding and you’ll
reduce possible problems.
3. Whenever possible, keep power
cords away from signal cables to pre-
vent induced hum. This is especially
important if you bundle the cables to
keep the installation neat looking.
4. Use quality interconnect cables. We
know from experience that really
cheap cables can cause a multitude
of problems. They tend to break
inside or corrode, causing a loss of
signal or hum. They also have poor
shielding.
5. If you need to run the RCA audio
cables more than 20 feet, consider
using an active balanced line driver
for the signals. This will provide
better noise rejection against nasty
things like hum, spikes, local talk
radio, and metaphysical paranormal
phenomena, etc. The AudioControl
balanced line driver components
(BLD-10, BLR-10 and BLX-10) are an
excellent way to send audio over long
distances with standard Cat-5 wiring.
Check them out at audiocontrol.com.
7. Dance in a fairy circle at midnight, on
the rst full moon of the new year.
Ask Queen Mab for the IP address.
Getting Started
8. Connect the RS 500 to the network
with an Ethernet cord, preferably one
in good condition without a broken
tab or covered in Marmite®.
9. Open your favorite Internet browser
and open the web server within the
unit. It will show all features and
controls of the unit.
Installation Examples
The next pages show some typical instal-
lations of RS 500 subwoofer amplier, and
also shows some of our ne AudioControl
components.
9
Installation Manual
Subwoofer Amplier
RS 500
Installation Examples
Prodigious Power - 2.1 HiFi System
Crossover 1/2 & 3/4
High-Pass
90 Hz
Crossover
Low-Pass
90Hz
Switch MONO
Passive
Subwoofer
(2 Ohm Minimum)
Jolly Nice
Full-Range
Speakers
(4 Ohm Minimum)
Connect to
Preamplier/Receiver
Line-Level outputs
Left
Right
Switch MONO
10
Installation Examples
Installation with a RS 500
Sub
Mids/Highs
Master Bedroom
BedroomOce
8 Channel DSP Amplifier
Model D2800
Sonos 2Sonos 1
Front
Door
Service
Entrance
TV
AVR
Zone 2
Analog Out
Analog
Out
Analog
Out
Analog
Out
Analog
Out
Digital
Out
Oce
11
Installation Manual
Subwoofer Amplier
RS 500
Installation Examples
Installation with Audio Video Reciever
Connect to
Home Theater
Preamplier/Receiver
Subwoofer
Line-Level outputs
Passive
Subwoofer
(2 Ohm Minimum)
12
Front Panel
Front Panel RS 500
1. LED – On the far left of the heavy
duty brushed aluminum front panel,
this LED indicates the state of the RS
500 amplier.
A Blue LED – shows that the ampli-
er is on and will drive your speakers
when the source is played.
A Red LED – shows that the ampli-
er is in standby mode and will not
drive the speakers (hit the power
button to make it blue).
No LED illumination – means that
it’s either unplugged from wall pow-
er or the back-panel mains power
switch is turned o, or all the lights
are out in your town again.
Yellow LED – indicates initiation of
jump to hyperspace. You have ten
seconds to put the cat out and leave
a note for the milkman. (Not yet
available in this galaxy
2. Light bar –This front panel blue
light bar is mined directly from the
R- Coronae Australis Nebula. The
brilliance of this light can be custom-
ized via a button on the back panel.
3. Power Button – This large legendary
button allows for the on/standby
mode to be toggled. Press to turn
the unit on and press again to turn
the unit into standby mode. The rear
panel Main AC Power switch must be
engaged for this button to work.
4. Rack Mount Ears – These optional
rack ears allow the unit to be rack
mounted in a standard 19” wide rack,
with a 2U height. Use standard rack
mount screws and washers to secure
the unit in a rack. The unit does not
have to be supported at the rear if the
rack is located in a xed location.
To remove the rack ears (making the
unit 17” wide), rst unplug the power
cord, and then locate and undo the
screws securing each ear to the side
of the chassis and remove the ears.
Replace the screws securely back into
the chassis. Do not remove any of the
other screws from the chassis or top
cover. There are hazardous voltages in-
side the unit. Keep the rack ears safely
tucked up in your sock drawer.
You can also remove the feet for rack
mounting but remember to put them
back on if you are no longer in a rack.
1 2 3 4
LED Color Description LED C0lor Description
Blue The unit is on Bright Red DC Error
Red The unit is in standby mode Yellow Jumping to hyperspace
O The unit is powered o
LED Function Table
13
Installation Manual
Subwoofer Amplier
RS 500
Rear Panel
Rear Panel Features
1. Ethernet LAN port - This standard
port allows the RS 500 to be connect-
ed to a 10 Base T network via CAT 5
cabling. The unit can be controlled
using it’s internal web server, acces-
sible through standard and popular
(and some unpopular) web browsers.
No external software is required to run
the RS 500. See section on Internet
Connectivity and Control for detailed
information.
2. Master reset button – only use this
if you have forgotten your static IP
address or want to start over from
the factory default conguration. This
erases all of you customized setting.
Use this cautiously and only if you
are sure that you don’t need those
settings anymore
3. Disable Front LED Bar - The front
panel LED bar glows a blue lumines-
cence. This can be dimmed or turned
o via the soft cycle button. Simply
press the button to cycle the glow
intensity of the bar and the setting will
persist through on/o states.
4. XLR Input - This is the balanced XLR
input jack. Connect an XLR cable from
your Preamplier (like the Maestro X7)
subwoofer XLR output to this input
5. XLR loop output - Use this balanced
XLR loop output to connect another
RS amplier for added bass enhance-
ment or neighbor bothering shenani-
gans. Especially when in a condo!
6. LFE loop output – use this to connect
to another RS amplier
7. LFE input - Use this discrete LFE mono
input when your AVR (like the Concert
XR-8) has a dedicated unbalanced
(RCA) output.
8. Stereo input - When you have a stereo
output, connect to this unbalanced
stereo pair input rst. This will allow
you to capture the stereo input signal
then pass that signal through the loop
outs
9. Stereo loop output - These RCA ste-
reo loop outputs allow you to connect
to your 2-channel amplier (maybe a
Rialto 400 perhaps) to power your mid/
high speakers using the same signal
from the RCA input stage
10. High pass - Press this button in to
apply the high pass crossover to the
RCA loop outs so that your mids and
highs aren’t trying to do the work that
the prodigiously powerful RS amp is
already handling.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
14
Rear Panel
11. Speaker level input - If you have an
amplied output from a distributed
audio system, use this input stage.
In most cases, you should be able to
connect to this input as well as your
speakers (paralleling the output) as
the input impedance of this input is 15
kOhm.
12. Speaker outputs - Connect your sub-
woofer speaker wires to these speaker
terminals. These are 5-way binding
posts so you can use just bare wire,
banana plugs, spade plugs, looped
wire or well, not sure what the 5th way
is but you get the drift.
13. Gound Isolation switch - This switch
selects the level of isolation between
the audio signal ground and the AC
earth ground. In normal operation this
switch should be in the GND position.
If there is trouble with an AC ground
hum, try the other two settings for
best operation. For safety, chassis is
always connected to the earth ground
regardless of the switch setting.
14. Master trigger - If your are not using
the Ethernet connection to turn the
unit on, then you can use the TS 1/8”
connector or the 3-pin block connector
to turn the unit on or to place it into
standby mode. Either one of these
connections bcan be used as a trigger
input. For example, you can have an
external device such as one of our
glorious AudioControl home theater
receivers, turn on the RS 500 when it
is turn on.
15. Trigger status LED - This LED shows
the status of the trigger input - if lit,
then the trigger has been activated,
if o or dark, then the trigger has not
been activated and is not seeing any
voltage on the 12v input.
16. 12V trigger - This is not a duplicate of
the 12v master trigger noted above.
This will turn on the power amplier
section of the RS amp. The master
trigger will trigger the main power
supply used to power the amp, the
DSP and other support items to make
this baby run – when main power is
triggered on, the units takes a few sec-
onds to power up. When the unit has
global power on via Ethernet or Master
Trigger, this 12V trigger will turn on
and o just the amp section. It a quick
250 millisecond on or o control.
15
Installation Manual
Subwoofer Amplier
RS 500
17. IR in – if you want to control the
volume of the RS amplier with an
infra-red remote control, use this port
to connect a powered wired IR sensor
to the amp. You can teach the amp to
listen to IR control or you can use the
default codes located in the automa-
tion table on the RS amplier web
page at www.audiocontrol.com .
18. AC Input – Connect the supplied AC
power cord securely to this input. Plug
the other end into an AC mains outlet
of the correct voltage rating for your
unit. This unit is a class 1 device, do not
defeat the safety ground connection
or use a power cord that does not have
the safety ground pin.
19. AC Fuse – The main power supply fuse
may be checked or replaced. Make
sure that the power cord is unplugged
from the AC mains rst. Then use a
at-headed screwdriver to undo the
fuse carrier from the fuse holder.
Inspect the fuse and replace with the
exact same type indicated on the unit.
The use of any other type of fuse may
lead to an unsafe condition. If the fuse
blows again immediately, then unplug
the power cord and contact our ne
folks in customer service. Do not open
the unit, as there are no user-ser-
viceable parts inside, and dangerous
voltages exist.
Almost Done With The Rear Panel
20. AC Power Switch – This switch shuts
o the main AC power. Normally the
only time you need to turn this o is
if the system is going to be shut down
for an extended period of time. Use
the Ethernet or master trigger inputs
to switch the unit between standby
and on.
Also turn the power switch o during
lightning storms, wind storms with
frequent power outages, or when a
giant asteroid is heading to the power
station again.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
16
Notes on Speaker connections
Stereo Speaker Connection:
Note the polarity markings for each
pair of outputs.
The speaker impedance should be 2
Ohms minimum in stereo operation.
2 ohms means that you can connect two
4, 6 or 8 ohm subwoofers to
the RS 500 amplier.
Speaker Wiring
Speaker Wiring
Establish a standard connection color
code and stick with it. One conductor
of the speaker wire is normally marked
by a dierent color (silver versus
copper) or there is a ribbing on one
side. Typically this marked conductor is
used for the positive (+) speaker leads.
Some wires have positive and negative
printed right onto the wire jacket.
Match the polarity markings on the unit
with the polarity markings on your
speakers. If the wiring is incorrect then
the speakers will be out-of-phase, with
a noticeable decrease in the bass re-
sponse and less than goodly-sounding
awesomeness.
See the next page for some handy in-
formation about speaker and wiring
impedance.
17
Installation Manual
Subwoofer Amplier
RS 500
Speaker and Wiring Impedance
Speaker and Wiring Impedance
Wire Gauge Run Length
25’ 50’ 100’ 250’ 500’
24 GA 1.3Ω 2.6Ω 5.1Ω 12.8Ω 25.7Ω
22 GA 0.8Ω 1.6Ω 3.24Ω 8.1Ω 16.0Ω
20 GA 0.5Ω 1.0Ω 2.0Ω 5.0Ω 10.1Ω
18 GA 0.3Ω 0.6Ω 1.28Ω 3.2Ω 6.4Ω
16 GA 0.2Ω 0.4Ω 0.8Ω 2.0Ω 4.0Ω
14 GA 0.1Ω 0.25Ω 0.5Ω 1.26Ω 2.5Ω
12 GA 0.08Ω 0.16Ω 0.32Ω 0.8Ω 1.6Ω
Speaker Wire Resistance:
Wire Gauge versus Run Length
ues in portions of their frequency range,
and speakers that are rated at unusual
impedances, for example 3.5 Ohms. The
RS 500 is tolerant of lower impedance
loads, however, all good designs use some
margin of error.
Your choice of speaker wire gauge and the
length of the runs, also aects the speaker
impedance load presented to the ampli-
ers. As you can see in this table, even fairly
short speaker runs can have signicant
resistance if you use a smaller wire gauge.
This can be a benet if you are paralleling
lots of speakers. The wire itself acts as
an impedance limiter, since the amplier
cannot see a speaker load lower than the
resistance of the wire. The downside of
this wire resistance is that you waste some
part of the total power available to the
speakers.
Speakers, like other resistors, when wired
in parallel “show” lower values than the
individual components. Here are two
examples for calculating speakers wired in
parallel:
Calculating Impedance
For three 8 Ohm speakers wired in
parallel (pluses connected to pluses)
the impedance is 1/8 + 1/8 + 1/8 = 3/8
Then take the inverse or 8/3 = 2.66 Ω
For two 8 Ohm speakers wired in
parallel (pluses connected to pluses)
the impedance is 1/8 + 1/8 = 2/8
Then take the inverse or 8/2 = 4 Ω
Often the real world is more complicated
than theory, and for speakers this is the
case. An eight Ohm speaker is not eight
Ohms at all frequencies. Plus passive
crossover networks add their own chang-
ing conditions. Be aware of speakers that
have signicant dips from “nominal” val-
18
12 Volt Triggering
The following details apply if you do not
want to use the Ethernet web server to
turn on the RS 500.
3-pin connector – To remotely turn on the
unit, use either a contact closure between
the Trigger Input and the +12V output, or
an external +12V trigger between the Trig-
ger In and GND terminals. The +12V out-
put is not designed to power other pieces
of equipment or jump start your car.
Pinout:
GND Ground
+12V Output
+12V Trigger Input
1/8” TS mono jacks – These are wired in
parallel to each other, and work in con-
junction with the 3-pin connector. Either
input can receive a +12V trigger which
will turn on the unit. This will then allow
the unused jack to output +12V that can
be used to turn-on a second unit. If the
3-pin connector is used to trigger the unit,
then both of the 1/8” jacks can be used to
provide output triggers to other units.
Pinout:
Tip
= +12V Trigger Input
Sleev
e = Ground
Power Up Process: When a +3 to +12V sig-
nal is sensed at the trigger input of either
of the 1/8” TS connectors, or the 3-pin
connector, the rear panel master trigger
indicator LED will change from o to blue.
During this short process, the front panel
Power will be red. Once this is complete,
the Power LED will turn blue and the Pro-
tection LED will turn o.
Wire Link
Power Down Process: As soon as a 0V
signal is sensed at the master trigger in-
puts, all zones will be muted and placed in
standby, and the rear panel master trigger
LED will change from blue to o. The front
panel Power LED will remain on, as the
main power supplies will be still energized.
If the master trigger Inputs remain at 0V
for 2 seconds, the main power supplies
will shut o; the front panel Power LED
will change from blue to red. The Protec-
tion LED will ash red once during the
power-down process.
The trigger input is biased towards
ground. This keeps the unit in standby
when nothing is connected.
If you are not using master triggering or
the Ethernet connection, then you must
install a short wire link from the +12V
output to the trigger input. To put the unit
into standby, remove the link.
12 Volt Trigger
19
Installation Manual
Subwoofer Amplier
RS 500
Ventilation
Ventilation
This may be as good a time as any to have
“the talk” about ventilation. The RS 500
features cool-running ecient switch
mode power supplies and Class D ampli-
ers, and they are equipped with thermally
controlled fans. They are still powerful
ampliers, and therefore require plenty of
good ventilation to properly cool.
Please be advised that no more than 4 RS
500 models may be stacked to-
gether. Any more than that, then
a rack space above and below is
required for adequate ventilation.
Review the heat load specica-
tions and ensure that your rack
room meets these requirements.
If the amplier should overheat,
a thermal sensor will put it into standby
mode, allowing the heatsink to cool down.
Once the amplier has cooled to a safe
operating temperature, the amplier will
reactivate. If this occurs often, identify the
cause of the problem and take corrective
action, for example:
Provide additional ventilation
Do not install in a sealed location
with limited or no airow
Install a fan in the rack
Make sure that the ampliers are not
overloaded with speaker impedances
below the recommended minimum
Check that there are no short circuits
in the speaker cables or speakers.
Note: Each zone will shut o inde-
pendently when a short circuit is
detected.
1U
1U
Ideal Spacing 1U rack space or more
above and below each pair
1U
1U
1U
No more than four units can be stacked
without a rack space between them.
Allow 1U rack space or more above and
below each stack of four.
20
Internet Connectivity and Control
Setting up an RS 500 is a breeze. Just plug
it in to an existing network and let the
DHCP server assign the RS 500 amplier
an IP address. You should take note of
the unit’s MAC address there on the back
at this time – maybe write down the last
couple of values. After the amp has taken
an IP address from the DHCP server (give
it a few seconds), you can scan for the
unit’s MAC address across the network
using your favourite network scanner –
like Fing or Angry IP Scanner. After you
have the unit’s IP address, type it into your
browser and the RS 500 Operations page
will open up.
Other than connecting to the browser
for initial set up, conguration and EQ
settings, you will be able to control the
amplier via Telnet. This is done through
the telnet port 23.
Control Using a Browser
For Microsoft operating systems:
There are multiple ways to connect to the
RS 500 amplier. The simplest way is to
connect the RS 500 via the Ethernet port
to a network with a DHCP server. The will
obtain a local address from the DHCP
server.
If no DHCP server has been enabled in
your network, or you would like to directly
connect to The , use an Ethernet cable and
connect the two devices together. The
default IP address of The is 192.168.0.249
when a DHCP server is unavailable, so in
order to connect to the RS 500, you will
need to give your computer a static IP
address.
In your Windows based computer, change
your computer’s IP address to a static
address of 192.168.0.x – where x is a value
between 1 through 254, but not using 249.
If you don’t know where to start to nd
out how to give your computer a static IP
address, please consult the Interwebs.
Be sure not to use a static IP address for
your computer that is in use by another
device – an IP address should be unique
across the local network – if it is not you’re
going to have a bad time.
Important Note:
DCHP is default for the RS 500.
However, if a DCHP server is not
found, the RS 500’s default IP address
is 192.168.0.249. If you aren’t using
DCHP and plan to assign static ad-
dresses, individually set the IP address
by connecting directly to the RS 500
with a computer rst. Never allow two
devices with the same IP address on
the network.
Internet Connectivity and Control
21
Installation Manual
Subwoofer Amplier
RS 500
Internet Connectivity and Control
For Apple/Mac Desktops and Laptops:
Your easiest method for connecting with
a Mac is to directly connect to the RS 500.
It’s default IP address is 192.168.0.249
so in order to connect to the RS 500, you
will need to give your computer a static IP
address.
Change your Mac’s IP address to a static
address of 192.168.0.x – where x is a value
between 1 through 254, but not using 249.
If you don’t know where to start to nd
out how to give your computer a static IP
address, please consult the Interwebs.
Be sure not to use a static IP address for
your computer that is in use by another
device – an IP address should be unique
across the local network – if it is not you’re
going to have another bad time.
Communications Options
The ’s web server “Device Conguration”
page has lots of communications options
you can play about with to your own de-
light or at your peril. If you know what you
are doing, then you will feel right at home.
Here are a few notes:
Server Gateway must be specied in order
to access the SMTP time server, likewise
for your email alerts to function properly.
DNS must be specied as well for the
SMTP and SMTP functions to work –
8.8.8.8 (Default) or 8.8.4.4 are public DNS
servers that the good folks at Google have
enabled for you to use.
22
Control Via Telnet Commands
To control the RS 500 in an automation
network, you will need nerves of steel,
and a controller that can send and receive
telnet commands and responses.
The command and response structures
of the controls provided via telnet are
in simple human language. Power on is
simply “power1” followed by a carriage
return to end the command. Command
feedback is conrmed by an echo of
the command, followed by a carriage
return, then another statement of “01”
followed by the command string, then a
carriage return and a line feed to end the
response string. If there is a value-change
like volume up, then the conrmation
response will include the new value at the
end of the string.
Telnet Session Length:
Sending a command to the RS 500 opens
a telnet session – nothing tricky, just
send it a command and it will respond.
The session will remain open for 4 hours,
and then close. If another command is
received within that 4 hours, then the
clock restarts. The session will close 4
hours from the time of the last command
received. If your automation system treats
such activity as dropping o the network,
then pinging it in the early AM every day is
probably a good practice.
Control Command Examples:
Increment volume by 1 where volume
before the command is 51:
Command Z1vol+<CR>
Response: Z1vol+<CR>
01Z1vol52<CR><LF>
To mute:
Command: Z1mute<CR>
Response: Z1mute<CR>
01Z1mute<CR><LF>
Note:
Queries like ZONEON<CR> return a 1
for on and 0(zero) for o. If you query
ZONEOFF<CR> then the response will be
0 (zero) for on and 1 for o.
Please visit our delightful website for
further information and a splendid table of
control commands:
http://www.audiocontrol.com
(As things in the fast-paced world of
technical documentation are constantly
changing, visiting our website is one way
to make sure you have the latest informa-
tion.)
Control via Telnet Commands
23
Installation Manual
Subwoofer Amplier
RS 500
Set up via the Web Page
Using a browser, type in the IP address of
the unit to navigate to the web page on
any device. The web page is responsive -
meaning it will auto size to your screen. If
you have a small phone, the layout adjusts
to that size and is touch sensitive. If on a
computer, the web page is sized according
to your browser size. And through this
interface, you will congure all the param-
eters of your new spectacular RS 500 amp.
The initial view of the web page shown
below illustrates the current state of the
amplier. To change your settings - DSP,
renaming, IP address, phase, delay etc..
click on the caret (the “>” icon) to expand
the selections.
Operation Tab
This gear icon opens
and closes the glob-
al settings menu.
Clicking the caret
expands the
menu options
24
Simply clicking on an option will expand
the adjustable parameters. These
conguration options allow you to
customize the amplier’s performance
to match your system design.
Global Standby: This basically is a main
power o where the amp, power sup-
ply and DSP are shut down. Power up
from this state is about 10 seconds.
ID: Pressing this button will cause the
Ethernet lights to ash in tandem on
the back on the unit
Temperature: Provides the status of the
channel temperature.
Voltage: Shows the amplier’s voltage
status
Trim: Trim the levels of the zone output.
The range of adjustment is suitable for
balancing SPL between multiple RS
500s or in combination with other amp
and speaker conguration.
Zone Standby: This turns only the amp
card on and o which allows for a
quick time to power output - meaning
Operation Tab (continued)
set this to on and in less than 500ms
or so, you’ll have bass. No boot-up
time to worry about. It’s important to
note that if you are relying on signal
sense, you should have both global on
and zone channel on to respond to the
signal input.
Zone Source: Renaming the input source
can be done here.
On Volume: Sets the volume to a specic
value at startup if the volume was at a
higher level than what is dened here.
If lower, then the lower value is used
at startup.
Max Volume: Sets max volume of the
amplier.
ACCUBass: Sets the value of the ACCU-
Bass compensation lter.
Delay: Sets the value of the delay - up to
200 ms in 5ms increments.
Phase: An all-pass lter is incorporated
here to allow changes in the phase of
the output signal. Use this to control
nulls and other room issues. Changes
phase in 5 degree increments from 0
to 180 degrees.
25
Installation Manual
Subwoofer Amplier
RS 500
Speakers: Here you can set your speaker
prole. The speaker prole is an op-
timized settings le that the speaker
manufacturer has designed to maxi-
mize the speakers performance with
the RS 500.
X-Over: Here you can set the Low Pass
and High Pass crossover lters to
control the frequencies being sent to
your subwoofer.
EQ: In this section, you control both the
graphic and parametric EQ lters to
dial in your subwoofer’s performance.
Global Conguration
By clicking on the Gear icon, you access
your global conguration options.
Device Conguration Tab
Amplier: Here you can rename the RS 500, set
Signal Sense to on or o and lock the system.
Setting signal sense is done by simply toggling
the button. System Locking is also a toggle but
requires you to enter in a system password.
Once system is locked, control over parameters
can only be done with the password you entered
here so make sure to write it down!
26
Zone Conguration Tab
Input Source: This option allows you to
name the input source for your RS 500 -
like Rear Sub or Main Sub Out. You have
the option to change the input voltage
sensitivity here as well. Common AVR
outputs are in the 1V to 2V range - best
bet is to simply use 1.5Vrms.
Network: This is where you enter in all your
network conguration settings if you are
setting up manually. If automatic, there’s
not much to do here other than ensure
the DHCP button is selected. If you are
having trouble connecting, the default
IP address of the unit 192.168.0.249. You
can connect manually peer to peer to
troubleshoot.
Notications: Set up this amplier to alert
you to any parameter you want to ag.
Entering in the SMTP info here will allow
the amp to send you updates about it’s
health.
**extra space here to remind you to wash your
hands and use your mask
Speaker Proles: We often add new
models to the Speaker Partners Program
database. These can be downloaded
from audiocontrol.com and uploaded to
the amp here.
Firmware: Update your rmware here. But
make sure you make a back up of your
settings below just in case.
Settings: Here you can back up the setting
of your RS 500, all parameters are stored
to an external le.
27
Installation Manual
Subwoofer Amplier
RS 500
Complimentary Blank Page for notes about that Rock Opera you are working on
28
Acoustics
Acoustics
Magazine reviewers and audio system
owners spend much time critically apprais-
ing speakers and other audio components.
Unfortunately, a phenomenon that has a
very large eect upon sound is not easily
judged or changed. That eect is the
ACOUSTICS of the environment in which
you are listening.
Room acoustics is a complicated subject
about which hefty textbooks have been
written, and entire galaxies have gone to
war over. We simply want you to be aware
of a few basics that have a direct eect on
real time audio analysis.
As you probably learned in high school,
sound travels in waves. In an audio
system, these waves are created by the
speakers. Like waves in a pond created by
a splash, sound waves emanate from the
transducers (speakers) and spread out into
the room. If your room were innitely big,
that’s all there would be to it. But just as
waves in a pond reach the bank and reect
back, sound waves bounce o walls, ceil-
ings, and oors, reecting, reinforcing and
canceling each other as shown here:
Since sound is energy, the way it reects
depends upon the angle of the surface,
the type of material and the frequency of
the sound wave. Because your listening
position is likely to be towards the back
of the Free Field (waves shown in the
diagram), you also get part of the reect-
ed Reverberant Field as well.
Now we add the next set of complications:
Dierent frequencies of sound have dier-
ent wave lengths (a function of frequency
and the speed of sound). Each frequency’s
wavelength contributes dierently to the
Free and Reverberant Fields because they
are dierent sizes. For example, a 32 Hz
bass note has a wavelength of 35 feet,
while a 16,000 Hz note has a wavelength
just under a tenth of an inch. Tiny treble
waves can be caught and neutralized by
draperies, carpeting, upholstered furniture
and gangs of indolent Persian cats…while
gigantic bass waves simply slosh back and
forth in the room.
Another set of variables is the shape and
volume of your listening room. Large
rooms require more bass energy to excite
waves within them. Small rooms need less
energy, but reect it dierently. And then
there’s the fact that most rooms don’t
have four walls anymore, but open into
dining rooms, lofts, cathedral ceilings, etc.
All of this means that predicting sound
interaction patterns is very dicult due to
the irregularities of the room shape.
As you can see, room acoustics is an
important but complicated subject. To
learn more about room acoustics, get a
copy of AudioControl’s Technical Paper
107, “Small Room Acoustics De-Mythol-
ogized”. You can download this paper
from www.audiocontrol.com (search
“De-mythologized”) or if you’re still into
the printed page, call us and we’ll mail
you a copy. The overall point that we’re
trying to make is that the various rooms
in a home function as gigantic mechanical
equalizers, boosting or cutting certain
frequen-cies depending on size, shape,
volume, acoustic treatment and the posi-
tion of the speakers.
29
Installation Manual
Subwoofer Amplier
RS 500
Equalization
Benets of Equalization
Rarely is the room and room decor
designed to get the most out of the
audio system. In fact, almost always the
opposite is the case where the speaker
positions and sizes are dictated by some
factors which are actually contrary to
good sound. This real world situation is
where equalization can provide great
benets.
Speaker positions, furniture, and general
room layouts may cause peaks in the
frequency response. Fortunately these
peaks can be tamed by judicious equal-
ization. Also, it may be that the client has
specic tastes, such as being the most
interested in hearing voices such as cricket
broadcasts, and you can tailor the sound
to these tastes. Remember there are
memories in The RS 500, and you could
use dierent settings via the memories for
dierent sources.
At all times, though, the laws of physics
are hard to violate, although we do try our
best. Equalization cannot make terrible
acoustics sound terric, only better. If the
room has a tile oor and glass walls for
example, the best case results will still be
pretty bad by most measures. Further,
while equalization can do wonders to help
a less than perfect speaker, nothing will
make a mediocre speaker sound fabu-
lous. In other words, for best results, start
with good speakers and reasonable room
acoustics, if possible.
Note: For the absolutely
best results, the
equalizer controls on the RS 50 0
should be adjusted with a real time
ana-
lyzer such as the AudioControl
Industrial
SA-4100i. Visit www.audiocontrolindus-
trial.com for more
analysis products.
Equalizing the System
Before proceeding with equalizing the sys-
tem, it is a good idea to make sure every-
thing is connected and working properly.
You know how to check connections, and
here are some reminders specic to The
RS 500, as well as the steps to equalize.
1. Turn on the system. The Power light on
the left front panel should be blue .
2. Connect to this specic unit over
the network by entering its unique IP
address into a browser (Firefox, Safari,
Chrome are preferred).
3. Make sure the unit is turned on and
turn o signal sense in the Operation
page on the browser. On the front
panel all zone status lights should start
red and then turn to blue.
4. If any are not blue, check the Opera-
tion page to see if you need to unmute
any zones.
5. Play pink noise through the system
into the zones you are going to adjust.
If needed, there is a pink noise audio
le at www.audiocontrol.com. Search
for “pink noise”. The signal is playing
through The unit when the LED’s level
meter on front panel responds to the
volume.
6. Assuming you have wireless network
access, now grab your trusty real time
analyzer (RTA) and go into the zone
you wish to adjust.
7. Place the microphone in the middle of
the area of listening at the height of
the typical listeners head.
8. In general, use the equalizer con-
trols to lower peaks in the frequency
response rst. Peaks obscure the
surrounding sounds and lowering the
peaks will unleash overshadowed
sounds.
30
Parametric and Graphic EQ
Parametric and Graphic
Equalization
The graphic equalization controls in The
RS 500 are selected to correspond with
the characteristics of wall and ceiling
speakers, and as such are very eective.
Graphic controls are the easiest to tune
and provide a “graphic” representation
of what the adjustments are. Para-
metric equalization requires selecting
the frequency, the bandwidth of the
control, as well as the level of adjust-
ment, not an easy task to get correct.
In general, parametric equalization is
valuable for very large areas of change
or very narrow areas.
Parametric equalization in The RS 500
is most likely best used for taming very
narrow peaks. Do not use for very nar-
row dips as these dips are likely caused
by cancellations and will not respond to
equalization boost.
31
Installation Manual
Subwoofer Amplier
RS 500
Advanced Discussions
Advanced Discussions
In Wall Volume Controls
What happens to the in-wall volume con-
trol if the amplier power is greater than it
can handle?
It will not be pretty but then again no
one will die. Typically, the magnetics
of the volume control will be over
taxed, saturate and thereby become
a lower impedance than rated. This
will encourage The amplier to put
out even more power possibly putting
the amp into protection. If not this
extreme, there is an excellent chance
the volume control saturation will
damage the sound quality. The upshot
is use a volume control with a margin
of safety.
Installation of multiple units
Can you stack units of the RS 500 on top
of each other without an air space in
between?
You can stack a maximum of 4 units
on top of one another, and allow a free
rack space above and below.
Ideally, 2 units can be stacked with a
free space above and below, as this
will improve the ventilation to the
units.
May you daisy chain or y-cord audio and
power trigger connections?
Daisy chaining audio is easy as there
are Loop output jacks, which can be
used to drive the next amplier.
For power control, it is easiest to have
an Ethernet connection to each unit.
The 12 volt mini jacks are powered to
turn on another unit when the main
unit is on (not standby). If you need
more than 15 milliamps current on the
12 volt output, use a relay to prevent
over loading The . (The itself only
takes 1 milliamp to turn on.)
What are the power requirements and
BTU outputs of The ?
More detailed information is shown in
the specications section. In general,
we feel a conservative, real life design
criteria is 1/8th power. This will be
a quite loud listening level for most
rooms and assumes all zones driven at
the same time. You will be amazed at
how cool The is at this level. One rule
does not t all situations, so apply your
knowledge of the particular circum-
stances involved. Also, see the section
below on unique rooms and SPL.
32
Advanced Discussions (continued)
How many units may I put on one 15
amp breaker?
It depends. Since you are limited to
1500 watts per device by most codes,
there should be a separate 15 amp
circuit for each unit.
The circumstances where the RS
500 draws maximum power are very
rare outside of an engineering lab.
Maximum power is using a sine wave
input which has at least a third higher
energy density than music. This would
mean that all channels are operating
at maximum, an unlikely situation
even during a really fun party. Even
more unlikely is all channels on multi-
ple units operating at full output.
You know the system better than we
do, so it is your decision. If the only
use is background music, then the
one-eighth power in the specications
is a reasonable (actually conserva-
tive) power draw. Of course, you will
want to include a margin of safety for
unusual circumstances. And in the
nal analysis, you have to do what the
electrical inspector tells you to do.
What should I use the “Trim” controls in
the browser for?
The Trim controls are an easy-to-ac-
cess level setting control which you
can use while in the zone. The Trim
controls allow minor not major adjust-
ments.
33
Installation Manual
Subwoofer Amplier
RS 500
Troubleshooting
Many problems can be eliminated by
re-checking the wiring and settings of the
unit. If a problem cannot be solved using
the guide below, please call the AudioCon-
trol team for further assistance, or e-mail
us at [email protected]
1. No Sound
a. Verify the Power LED is Blue.
b. Verify Protection LED is O.
c. Verify Zone Status LED is Blue.
d. Verify that the correct input has
been selected in the web server
menus
e. Verify the source unit is operating.
f. Check the speaker connector plugs
on the rear panel are secure.
g. Unplug the power cord and check
the AC Power Fuse on the rear
panel.
2. Protection LED is o, but none of
the Zone Status LEDs are on:
a. Defeat the signal-sense circuits
using the signal sense switch on the
web server Operation tab. All of the
zone status LEDs should turn on.
If they do not, call AudioControl’s
customer service.
b. Verify the source unit is operating.
c. Increase the preamp volume if sig-
nal sense is engaged, or just going
steady.
3. Channel Status LED is Red:
a. Check speaker leads for a short.
Swap speaker connectors on rear to
see if the problem moves with the
wires.
b. If the unit is excessively hot, turn
down the volume and allow it to
cool o. The protection LED should
turn o after a short while. Verify
that any ventilation holes have not
become blocked.
c. The speaker impedance may be too
low. Use an ohmeter to measure
the impedance on the speaker
wires.
4. Speaker channels are cutting in and
out:
a. If using external volume controls,
check that they can handle the
power output.
b. Make sure the speaker impedance
is not less than 2 Ohms.
c. There may be a short in the wires.
Suspect a short if the problem hap-
pens only at the highest volumes.
5. Protection LED is Red:
a. Disconnect power from the unit
for 3 to 4 minutes and reconnect to
power.
b. Disconnect all speaker wires. If
it still turns red, and the unit has
cooled, something rather serious
has happened inside the unit. Call
AudioControl’s lonely folks in cus-
tomer service.
Troubleshooting
34
Troubleshooting (continued)
6. Speaker Buzzing or Crackling at high
volume:
a. Reduce any preamplier/equalizer
low-frequency boost.
b. Turn o your “Sounds of the
Pacic Northwest” chainsaw and
bacon-frying CD.
7. There is no audio input signal, but
the Zone Status LEDs are still blue:
a. Check the signal-sense switches in
the unit’s web server tabs. If they
are not engaged, the zone status
LEDs will stay on as long as the
master trigger is enabled.
b. The zone status LEDs stays on for
2 minutes (depending on music
volume) after the audio signal has
stopped. This delay helps prevent
prematurely muting during quiet
passages or song changes.
8. The unit is on but you cannot trigger
it o
The unit will stay on if either the
12v master trigger is on, or jum-
pered on.
35
Installation Manual
Subwoofer Amplier
RS 500
Block Diagram
Block Diagrams
Time Align
Delay
DAC
ADC
Parametric
Graphic EQ
High Pass /
Low Pass
Filters
Volume
Limiter
Amplifier
Speaker
Outputs
LFE IN
Stereo
RCA IN
Ø
Phase
Balanced
XLR IN
+
-
36
Specications
RS 500 Specications
Output Power ............................................................500 watts @ 8, 4 and 2 ohms
Frequency Response (20 Hz to 350 Hz)........................................................... ±1 dB
Total Harmonic Distortion/Ch…………..... 0.1% (500 watts @ 8 ohms 20 Hz -350 Hz)
Maximum Input Voltage ……………...........................4 Vrms (Balanced/Unbalanced)
30 Vrms (Speaker Level)
Input Impedance…………….………………....................................................15 kohms
Signal to Noise Ratio..................................................... > 95 (A wtd, ref full output)
16.5”Damping Factor...................................................................................... > 350
Gain ...............................................................................................................36 dB
Analog Input Sensitivity.......................................................... 1Vrms for full output
Minimum Speaker Load............................................................................... 2 ohms
Protection...............................................Clipping, Thermal, Short Circuit, DC oset
AC Power Requirements
Standby......................................................................................................<2 watts
Idle.............................................................................................................38 watts
1/8th power (loud listening level)............................................................ 62.5 watts
Full Power.................................................................................................500 watts
BTU/hr Output
Standby.................................................................................................. 5.6 BTU/hr
Idle........................................................................................................ 129 BTU/hr
1/8 power (loud listening level) .............................................................. 153 BTU/hr
Full Power...............................................................................................255 BTU/hr
Dimensions
Height...................................................................................................... 1.75” (1U)
Width (ears on)................................................................................................19.0”
Width (ears o)............................................................................................... 17.0”
Depth..............................................................................................................16.5”
Weight ....................................................................................................... 14.9 lbs.
37
Installation Manual
Subwoofer Amplier
RS 500
Service
What to do if you need service
First, if you need service, it is probably
best to go and see a trained health care
professional.
If the RS 500 needs service, then please
contact AudioControl, either by e-mail or
phone. We will verify if there is anything
wrong in the system that you can correct
yourself, or if it needs to be sent back to
our factory for repair.
Please include the following items when
returning the unit:
1. A copy of your proof of purchase. No
originals please. We cannot guarantee
returning them to you.
2. A brief explanation of the trouble you
are having with the unit. (You’d be
surprised how many people forget
this.) If you can supply a really detailed
description of the problem, this would
be so much better, and our service
technicians may add you to their
Christmas Card list. Please include
any notes about the system and other
components you are using. Is it an
intermittent problem that only occurs
on the rst full moon of Spring?
3. A return street address. (No PO Boxes,
please).
4. A daytime phone number in case our
technicians have a question about the
problem you are having, or if they are
just feeling lonely.
5. Package the unit in the original
packaging if you still have it, and if the
cat hasn’t had three litters of kittens
in the box. Use great care and plenty
of good packing materials to protect
the unit and prevent it from moving
about inside the box. Do not use loose
materials like packing peanuts or real
peanuts.
You are responsible for the freight charges
to us, but we’ll pay the return freight back
as long as the unit is under warranty. We
match whatever shipping method you
use to send it to us, so if you return the
unit overnight freight, we send it back
overnight. We recommend United Parcel
Service (UPS) for most shipments.
Repair service is available at:
Attention: Service Department
22410 70th Avenue West,
Mountlake Terrace,
WA 98043 USA
Phone 425-775-8461
FAX 425-778-3166
e-mail:
38
The Warranty
In just the same way as being covered in
honey and thrown into a dark pit full of
hungry woodchucks, people are scared of
warranties. Lots of ne print. Months of
waiting around. Well, fear no more. This
warranty is designed to make you rave
about AudioControl. It’s a warranty that
looks out for you and your client, plus
helps you resist the temptation to have
your friend Sparky, who’s “good with elec-
tronics,” try to repair your AudioControl
product. So go ahead, read this warranty,
then register the information at www.
audiocontrol.com/product-registration
and include your comments.
Our warranty has conditional conditions!
“Conditional” doesn’t mean anything
ominous. The Federal Trade Commission
tells all manufacturers to use the term
to indicate that certain conditions have
to be met before they’ll honor the war-
ranty. If you meet all of these conditions,
AudioControl will, at its discretion, repair
or replace any AudioControl products
that exhibit defects in materials and/or
workmanship during the warranty on your
product for ve (5) years from the date
you bought it, and we will x or replace it,
at our option, during that time.
Here are the conditional conditions:
1. You must fully register your purchase
within 15 days of the purchase date
by going to the AudioControl product
registration page at www.audiocon-
trol.com/product-registration. Failure
to register your product will negate
the warranty.
2. You need to hold on to your sales
receipt! All warranty service requires
original sales receipt documentation.
The warranty only applies to the
original purchaser from an authorized
AudioControl dealer. Note: Products
purchased from unauthorized dealers
are not covered under warranty.
3. If an authorized AudioControl dealer
installs your AudioControl product,
the warranty is ve years, otherwise
the warranty is limited to one year.
4. Our warranty covers AudioControl
products that have been installed
according to the instructions in the
installation manual.
5. You cannot let anybody who isn’t:
(A) the AudioControl factory; or (B)
somebody authorized in writing by
AudioControl service your AudioCon-
trol product. If anyone other than (A),
or (B) messes with your AudioControl
product, the warranty is void.
6. The warranty is void if the serial num-
ber is altered, defaced or removed,
or if your product has been used
improperly. Now that may sound like
a big loophole, but here is what we
mean by this: Unwarranted abuse is:
(A) physical damage (don’t use your
product to level your dining room
table); (B) improper connections (120
volts into the RCA jacks can fry the
poor thing); (C) sadistic things! This
is the best product we know how to
build, but for example if you mount it
to the front bumper of your car, drop
it over the Niagara Falls or use it for
Clay Pigeon shooting practice, some-
thing will go wrong.
Assuming you conform to 1 through 6, and
it really isn’t all that hard to do, we get the
option of xing your product or replacing
it with a new one at our discretion.
In the event that your product is out of
warranty or not covered under our warran-
ty you may request to have any damage
repaired at our normal “Out of Warranty”
repair cost.
Please Remain Calm
39
Installation Manual
Subwoofer Amplier
RS 500
Please Remain Calm
Legalese Section
This is the only warranty issued by Audio-
Control. This warranty gives you specic
legal rights, and you may also have rights
that vary from state to state. Promises of
how well your AudioControl product will
work are not implied by this warranty.
Other than what we’ve said we’ll do in this
warranty, we have no obligation, express
or implied. We make no warranty of mer-
chantability or tness for any particular
purpose. Also neither we nor anyone else
who has been involved in the develop-
ment or manufacture of the unit will have
any liability of any incidental, consequen-
tial, special or punitive damages, includ-
ing but not limited to any lost prots or
damage to other parts of your system by
hooking up to the unit (whether the claim
is one for breach of warranty, negligence
of other tort, or any other kind of claim).
Some states do not allow limitations of
consequential damages.
40
Hurrah, you are done!
Manual PN 913-165-0 Rev 2
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