Alphasonik R PMA600HCE User Manual
Page 9
1. Speaker Terminals: These nickel plated connectors can accept from 10 to 8
gauge wire. Be careful to observe proper polarity when connecting the cables.
2. To avoid unwanted ignition noise caused by ground loops, it is essential that
the amplifier be grounded to a clean, bare, metal surface of the vehicle’s chas-
sis. The nickel plated connector can accept from 4 to 2 gauge wire
Note: THE GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN 3’ 6”
(1 METER).
3. REMOTE TURN-ON INPUT: Attach to remote or power antenna output of a
car stereo. This amplifier is turned “ON” remotely when the vehicle’s stereo is
turned “ON”. The nickel plated connector can accept from 18 to 16 guage wire.
Note: IF YOUR RADIO DOES NOT HAVE A +12 VOLT OUTPUT LEAD WHEN
THE RADIO IS TURNED ON, THE “REMOTE” TERMINAL ON THE AMPLIFIER
CAN BE CONNECTED TO THE VEHICLE’S ACCESSORY CIRCUIT THAT IS
LIVE WHEN THE KEY IS “ON”.
4. Battery Positive Terminal: Due to the power requirements of the amplifier, this
connection should be made directly to the positive (+) terminal of the battery.
For safety measures install an in-line fuse holder (not included) as close to the
battery positive (+) terminal as possible with an ampere rating not to exceed the
value of the fuses in Amplifier.
5. Input Sensitivity Adjustment: This control adjusts the amplifier’s input sensitiv-
ity. Input sensitivity is variable from 200 Mil volts to 8 volts. Clockwise increases
sensitivity. Counterclockwise decreases sensitivity. This knob is not a volume
control for the amplifier. The amplifier can be driven to full power with a wide
range of signal levels. A lower signal level will require increased sensitivity for full
power. A higher signal level will require decreased in sensitivity.
6. Bass Boost Frequency Adjustment: This control adjust the frequency to be
boosted from 40Hz to 100Hz. (PMA800HCA).
7. Bass Boost Gain Adjustment: This control adjust the Bass Boost Gain for the
amplifier’s speaker output (0 to +18dB).
8. Crossover: Adjust the crossover for your chosen installation method.
-LOW: Low pass filter-only bass tones (50Hz – 250Hz) go to speakers. Use with
or sub-woofer
- FULL: No filter-all tones go to speakers. Use with full-range speakers, or with
external crossovers.
-HIGH: High pass filter-blocks very low tones (50Hz – 250Hz) from the speakers.
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