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JA SERIES
JAOne JATwo JAFour JAFive
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What to do?
This warranty gives you specific legal rights.
You may also have other rights which vary from
state to state.
Jensen warrants this product to the original
purchaser to be free from defects in material
and workmanship for a period of three years from
the date of the original purchase.
Jensen agrees, at our option, during the warranty
period, to repair any defect in material or
workmanship or to furnish an equal new, renewed,
or comparable product (whichever is deemed
necessary) in exchange without charges, subject
to verification of the defect or malfunction and
proof of the date of purchase. Subsequent
replacement products are warranted for the
balance of the original warranty period.
What is covered? This warranty covers all defects
in the material and workmanship in this product.
The following are not covered: software,
installation/removal costs, damage resulting from
accident, misuse, abuse, neglect, product
modification, improper installation, incorrect line
voltage, unauthorized repair, or failure to follow
instructions supplied with the product, or damage
occurring during return shipment of the product.
Specific license conditions and copyright notices
for the software can be found via
www.jensenmobile.com.
Warranty Coverage
* Limited 3-year warranty. (Proof of purchase
required)
Extend your warranty from 3 years to 5 years
when installed by the selling dealer and you
register online at
www.jensenmobile.com.
1. Before you call for service, check the
troubleshooting guide in your owner's manual. A
slight adjustment of any custom controls may save
you a service call.
2. If you require service during the warranty period,
you must carefully pack the product (preferably in
the original package) and ship it by prepaid
transportation with a copy of the original receipt
from the retailer to an authorized service center.
3. Please describe your problem in writing and
include your name, a return UPS shipping address
(P.O. Box not acceptable), and a daytime phone
number with your shipment.
4. For more information and for the location of the
nearest authorized service center please contact us
by one of the following methods:
• Call us toll-free at (888) 921-4088
(Monday-Friday, 9:00 am, to 5:00 pm, EST)
• E-mail us at [email protected]
Exclusion of Certain Damages: This warranty is
exclusive and in lieu of any and all other warranties,
expressed or implied, including without limitation
the implied warranties of merchantability and
fitness for a particular purpose and any obligation,
liability, right, claim or remedy in contract or tort,
whether or not arising from the company's
negligence, actual or imputed. No person or
representative is authorized to assume for the
company any other liability in connection with the
sale of this product. In no event shall the company
be liable for indirect, incidental, or consequential
damages.
TYPICAL
MOUNTING
METHOD
14
Preparation
Limited Three Year* Warranty
Please read entire manual before installation. Due to the technical nature
of
it is highly recommended that your is installed by a
professional installer or an authorized dealer.
Before You Start
• Disconnect negative battery terminal. (consult a
technician for
instructions)
• Avoid installing the
where it would be subject to high temperatures, such
as from direct sunlight, or where it would be subject to dust, dirt or excessive
vibration.
• Use extreme caution when drilling holes to avoid damaging fuel lines or existing
vehicle wiring.
• All
installations require power, signal and speaker wires (not included).
• An
installation kit (sold separately) is highly recommended to facilitate
the installation. Consult your dealer for recommendations.
Mounting Location
• Choose a mounting location for the
r. Suggested locations include under a
seat or in the trunk.
• The
can be mounted horizontal (recommended) or vertical. For optimum
performance, make sure to provide at least 1" of space around all sides. Do not
mount the
under carpets or where is restricted.
• Do not install the
where it may be exposed to moisture.
• The optimum mounting location varies between vehicles. Remember to test all
functions before completing the mounting procedure.
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NOTE:
Be sure to follow specific instructions included with your amplifier installation kit
(not included with this amplifier). The information below should be used as a general
guideline only.
Power Wire (+12V)
• Disconnect negative battery terminal before proceeding. Consult a
technician for instructions if you are unsure.
• Plan wire routing before cutting any wires to length. Begin by routing the power
+12V wire from the battery to the
location. Use a grommet when running
wires through the
rewall or metal openings. Avoid running the power wire near
existing vehicle wiring to prevent induced noise from entering the audio system.
• Use extreme caution when drilling holes to avoid damaging fuel lines or existing
vehicle wiring.
• The +12V wire MUST be fused within 18" of the battery for protection of the vehicle’
electrical system.
Ground Wire (GND)
• The
ground wire should be as short as possible (no more than 36" or
1 meter). Choose a clean unpainted section of metal or the vehicle chassis when
attaching the ground connection. Be sure to clean the area of any dirt or grease.
Remote Turn-on Wire (REM)
• The remote turn-on wire connects to the head unit's
turn-on lead or
power antenna output.
Speaker Wires
• Choose adequate gauge speaker wire depending on your exact
er
combination. Be sure to observe polarity when connecting.
• Do not ground any speaker wires or connect any speaker wires together.
Input Signal
• The
input signal connects to the head unit's low level (RCA) or high level
(speaker wire) outputs.
• Low level input signals deliver the best performance. If unavailable, use the high
level inputs - when interfacing with factory head unit for instance.
Power / Protect Indicators
• Colored LED indicators illuminate from the plastic power terminal.
• The blue LED illuminates during normal operation (POWER) and the red
LED indicator is visible when the
detects a fault (PROTECT).
CAUTION
• Do not use both low and high level inputs at the same time. Connect only one or the
other.
• Keep low level inputs away from any power wires to avoid engine noise.
• Never run any wires underneath or outside the vehicle.
2
13
no i t cAesuaCme l b o r P
Unit will not turn on
(no power LED
indicator)
+12V wire not connected or incorrect
voltage. REM wire not connected or
incorrect voltage
Check connections for proper voltage
(11~16VDC)
GND wire not connected Check connection to ground
)s(esuf ecalpeRnwolb )s(esu F
Unit has power -
LED is green (but
no sound)
Speaker wires not connected Check connections at speakers
Volume turned all the way down Increase volume level at head unit
One or more speaker wires touching
each other or touching chassis ground
Insulate all bare speaker wires from
each other and chassis ground
Speaker(s) defective or damaged Check/replace speaker(s)
Input signal not connected
Check high or low level inputs for
proper connection
Unit blows fuse(s)
Incorrect fuse rating Use fuse(s) with correct rating
+12V wire touching chassis ground Check for pinched wire
Speaker(s) defective or damaged Check/replace speaker(s)
Engine noise
Bad ground connection
Make sure
is grounded to
clean bare metal
Signal ground loop or RFI (radio
frequency interference)
Re-route RCA cables from existing high
current wiring
LED illuminates red
(protect mode)
One or more speaker wires touching
each other or touching chassis ground
Insulate all bare speaker wires from
each other and chassis ground
Speaker(s) defective or
damaged internally (shorted)
Check/replace speaker(s)
Speaker load less than 2 ohms (stereo).
Speaker load less than 4 ohms (bridged)
Adjust speaker load -
will
not operate at less than 4 ohms when
bridged
Distorted audio
output
Incorrect input signal type or
input level too high
Check connections and reduce/adjust
input level
Low audio output
Incorrect input signal type or
input level too low
Check connections and increase/adjust
input level
Connection DescriptionsTroubleshooting
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JAFive
Audio Inputs and Controls
Specifications
• Continuous power output (1% THD+N):
• 85 Watts RMS x 4 channels + 310 Watts RMS x 1 channel @ 4 ohms
• 135 Watts RMS x 4 channels + 495 Watts RMS x 1 channel @ 2 ohms
• Maximum dynamic power output (10% THD+N):
• 90 Watts x 4 channels + 345 Watts x 1 channel @ 4 ohms
• 155 Watts x 4 channels + 555 Watts x 1 channel @ 2 ohms
• THD+N: <0.12% @ 1 Watt RMS (Ch 1-4) / <0.20% @ 1 Watt RMS (Sub)
• Frequency response: 20Hz - 20kHz (Ch 1-4) / 20Hz - 250Hz (Sub)
• Signal to noise ratio 86 dBA (reference: 1 Watt RMS) (Ch 1-4) /
88 dBA (reference: 1 Watt RMS) (Sub)
INPUT OUTPUT
L
R
MIN
GAIN
MAX
LOW-PASS
50Hz
250Hz
BASS BOOST
0dB
6dB
SUBSONIC
FILTER
OFF
30Hz
REMOTE
HIGH LEVEL
-
++
-
L
R
INPUT OUTPUT
L
R
MIN
GAIN
MAX
BASS BOOST
0dB
6dB
HIGH LEVEL
-
++
-
LR
X-OVER
LPF/FULL/HPF
FREQ
50Hz
250Hz
LINE IN
FRONT REAR
OUTPUT
L
R
FRONT
REAR
FREQ
50Hz
250Hz
X-OVER
LPF/FULL/HPF
MIN
GAIN
MAX
+
-
HIGH LEVEL
LRLRLRLR
FRONT REAR
MIN
GAIN
MAX
FREQ
50Hz
250Hz
0dB
6dB
BASS BOOST
0dB
6dB
BASS BOOST
X-OVER
LPF/FULL/HPF
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Power and Speaker Connections
JAFive
JAFour
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JATwo
• Continuous power output (1% THD+N):
• 500 Watts RMS x 1 channel @ 4 ohms
• 870 Watts RMS x 1 channel @ 2 ohms
• 1310 Watts RMS x 1 channel @ 1 ohms
• Maximum dynamic power output (10% THD+N):
• 555 Watts x 1 channel @ 4 ohms
• 985 Watts x 1 channel @ 2 ohms
• 1525 Watts x 1 channel @ 1 ohms
• THD+N: <0.04% @ 1 Watt RMS
• Frequency response: 20Hz - 250Hz
• Signal to noise ratio 89 dBA (reference: 1 Watt RMS)
• Amplifier dimensions: 1.99” x 6.53” x 9.92” (HxDxW)
• Class D design
• High level inputs (speaker wire)
• Low level inputs (RCA)
• Variable gain adjustment (300 mV ~ 6 V)
• Selectable crossover (high pass/low pass/full range)
• Variable low-pass crossover (50 Hz – 250 Hz)
• Variable high-pass crossover (50 Hz – 250 Hz)
• Variable bass boost @ 45 Hz (0-6 dB)
• Bridgeable operation for subwoofer applications
• 2/4 Ohm stable stereo operation
• 2/4 Ohm speaker impedance
• Recommended power/ground wire: 8 AWG
• Recommended speaker wire: 12 AWG
• Continuous power output (1% THD+N):
• 125 Watts RMS x 2 channels @ 4 ohms
• 215 Watts RMS x 2 channels @ 2 ohms
• 445 Watts RMS x 1 channel @ 4 ohms (bridged)
• Maximum dynamic power output (10% THD+N):
• 150 Watts x 2 channels @ 4 ohms
• 265 Watts x 2 channels @ 2 ohms
• 485 Watts x 1 channel @ 4 ohms (bridged)
• THD+N: <0.12% @ 1 Watt RMS
• Frequency response: 20Hz - 20kHz
• Signal to noise ratio 87 dBA (reference: 1 Watt RMS)
• Fuse: 30A x 1
• Amplifier dimensions: 1.99” x 6.54” x 6.77” (HxDxW)
• Class D design
• High level inputs (speaker wire)
• Low level inputs (RCA)
• Variable gain adjustment (300 mV ~ 6 V)
• Selectable crossover (high pass/low pass/full range)
• Variable low-pass crossover (50 Hz – 250 Hz)
• Variable high-pass crossover (50 Hz – 250 Hz)
• Variable bass boost @ 45 Hz (0-6 dB)
• Bridgeable operation for subwoofer applications
• 2/4 Ohm stable stereo operation
• 2/4 Ohm speaker impedance
• Recommended power/ground wire: 8 AWG
• Recommended speaker wire: 12 AWG
• Continuous power output (1% THD+N):
• 130 Watts RMS x 4 channels @ 4 ohms
• 215 Watts RMS x 4 channels @ 2 ohms
• 440 Watts RMS x 2 channels @ 4 ohms (bridged)
• Maximum dynamic power output (10% THD+N):
• 145 Watts x 4 channels at 1kHZ @ 4 ohms
• 235 Watts x 4 channels at 1kHZ @ 2 ohms
• 465 Watts x 2 channels at 1kHZ @ 4 ohms (bridged)
• THD+N: <0.12% @ 1 Watt RMS
• Frequency response: 20Hz - 20kHz
• Signal to noise ratio 82 dBA (reference: 1 Watt RMS)
• Fuse: 30A x 2
• Amplifier dimensions: 1.99” x 6.53” x 9.13” (HxDxW)
LINE IN
FRONT REAR
SUB
L
R
FRONT
REAR
SUB
GAIN
X-OVER
LPF/FULL/HPF
MIN
FREQ
GAIN
50Hz
250Hz
MAXMIN MAX
FREQ
50Hz
250Hz
X-OVER
LPF/FULL/HPF
MIN
GAIN
MAX
LOW-PASS
50Hz
250Hz
BASS BOOST
0dB
6dB
SUBSONIC
FILTER
OFF
30Hz
REMOTE
+
-
HIGH LEVEL
LRLR
LRLRLRLR
FRONT REAR SUB
POWER
GND REM +12V
FUSE
30A 30A
OUTPUT
++
--
30A
Audio Inputs and Controls
Specifications
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5
POWER
GND REM +12V
FUSE
BRIDGE
+
-
+
-
30A
L R
OUTPUT
POWER
GND REM +12V
FUSE
30A 30A
OUTPUT
FRONT REAR
LR LR
+
-
BRIDGE(L+ and R-)
POWER
GND REM +12V
FUSE
40A 40A
OUTPUT
FRONT REAR
LRLR
SUB
+
-
BRIDGE(L+ and R-)
Power and Speaker Connections
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Input Signal Connections
Low Level Input (RCA)
Low level (RCA) input signal is preferred for best performance. Typical trunk-mount
installations require a 17-20 foot RCA cable. Most trucks and under-seat
applications require a 6-9 foot RCA cable. Using twisted pair construction RCA
cables will minimize noise.
Speaker Connections
Connect speaker wires
observing polarity. The
minimum impedance load
for the
is 2 ohms
stereo and 4 ohms bridged.
Use o
s lower than these
is not recommended and may
cause
damage. The
can be wired for
stereo, bridged or stereo/
bridged simultaneous
operation.
Note: Do not use both low and high level inputs
at the same time - connect only one or the other.
(RCA)
Typical speaker connections shown
Speakers (bridged)
Typical Bridged Wiring
(4 ohms minimum)
2 Speakers (stereo)
Typical Stereo Wiring
(2 ohms minimum)
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High Level Input
(Speaker Wire)
High level inputs should only be used
when RCA outputs are not available from
the head unit. Connect the head unit
speaker outputs to the high level input
connector as shown below.
R CH
L CH
Low Level Input
Low Level Input
Low Level Input
Typical Wire RoutingAmplifier Connections
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JAFour JATwo
JAFive
Typical Wire RoutingWireTypical Routing
