Loading ...
Loading ...
Loading ...
5
SETTING THE CONTROLS:
AUDIO PREAMP INPUT
The RX Phenom Series ampliers feature RCA pre amp inputs. Run RCA cables from
your sound source to the inputs of the amplier. We suggest the use of high quality
shielded RCA patch cords to help reduce and eliminate unwanted electrical noise to
your system.
Be sure to run the RCA cables on the opposite side of the vehicle that you used to carry
the power and ground leads of the amplier.
USING THE BUILT-IN LOW PASS ELECTRONIC CROSSOVER
All the RX Phenom Series ampliers feature 12dB per octave fully adjustable low-pass
and high pass electronic crossovers.
For Low Pass sub woofer systems, set the CROSSOVER MODE switch to LOW PASS.
Now the knob marked FREQUENCY will control the low pass frequencies depending on
the model anywhere from 50Hz to 3KHz. A frequent error made is setting the low pass
frequency too low, especially when using vented sub woofer enclosures. We recommend
that for most installations you do not set the frequency knob lower than 80 - 100Hz (the
12 o’clock position).
When using the ampliers for component speakers or co-axials, you will want to set the
CROSSOVER MODE switch to HIGH PASS. The FREQUENCY control knob adjusts the
high pass frequencies between 15Hz and 1KHz. Do not attach tweeters directly to the
amplier, (even in the high pass mode) without a secondary passive crossover to protect
them. 500Hz high pass is not a frequency high enough for tweeters.
SUBSONIC FILTERING
For sub woofer installations with a passive LP crossover, you can set the amplier’s
CROSSOVER MODE selector to HIGH PASS while setting the FREQUENCY KNOB to
30Hz, this will act as SUBSONIC FILTER for all signals below 30Hz. This is especially
useful for vented enclosures where the port tuning frequency falls below the sub woofer
tuning frequency to protect against sub woofer unloading.
The remote turn on connection is located on the barrier strip next to the power and ground
connections. This connection is responsible for turning the amplier on and o with the rest of
the system. A smaller gauge wire can be used to make this connection to your radio’s power
antenna lead. Should your system not have any turn on leads, you can wire the remote terminal
to an accessory lead, which turns on, with your cars ignition.
The RX Phenom Series ampliers are supplied with built-in fuses, never replace the fuse that the
amp came with, with one of a larger value.
We suggest you construct a Red wiring harness with 2 additional fuses. One fuse should be
located near the car battery. This fuse near the battery oers protection against damage from
short circuits to the car chassis between the battery and the amplier. A second fuse closer to
the amplier oers additional safety to the amplier itself. This fused red power wire should be
attached to the amplier power terminal marked
The wire harness should be made of red primary cable of at least 8 gauge for the F200-2 and at
least 4 gauge for all other larger models. The harness should terminate in a large ring terminal for
connection directly to the positive terminal of the car battery. Use a spade plug to attach the wire,
which connects to the amplier location marked
A second black color wire of equal gauge should be used as a ground connection to a welded
chassis member. When connecting the ground wire make sure that there is no paint or other
insulator blocking a good ground connection. When installing multiple ampliers, mount them in
close proximity so that they can all share the same ground point. Attach the black ground wire to
the amplier screw terminal marked
We have received ampliers back to our service department with melted power/ground terminals.
The cause of this is a bad ground connection. When there is a lack of good ground, heat builds
up at the weakest point which happens to be the contact screw of the amplier terminal. Over
time the heat generated will begin to melt the terminal. It is a good practice to feel the power and
ground wires with your hands, near their amplier connection after having played the amp for a
while. If the wires feel hot to the touch you probably have a bad or loose connection. If you are
sure of your connections and the wires still feel hot to the touch, you should upgrade the gauge
of wire to next heaviest gauge.
Installation Basics
Loading ...
Loading ...
Loading ...