Inputs: The amplifier offers both RCA line-level and speaker-level
inputs for 2 channels. The supplied speaker-level input harness allows you to connect
this amplifier to a receiver without preamp outputs; aftermarket or factory. The speaker
level inputs will accept the output from a high powered radio.
Terminal Covers: The amp comes with two plastic covers that protect
and insulate the RCA, power, and speaker connections. Four supplied screws attach the
covers to the amplifier.
Low Pass Filter: The amp has a low-pass filter, continuously
variable from 50-200 Hz with a slope of 24dB/octave. This being a mono subwoofer
amp, the crossover is always engaged.
Subsonic Filter: This amp utilizes a subsonic filter to
eliminate super low frequencies that can rob power and damage speakers. The
subsonic filter settings are 15 Hz, 30 Hz, and off.
Bass EQ: The Bass EQ circuit provides a variable boost
(0-12dB) with an adjustable center frequency (30-80 Hz).
Left Side Of Amplifier:
- GND (ground): gold-plated set
screw terminal, accommodates bare wire up to 1/0
- Battery: gold-plated set screw
terminal, accommodates bare wire up to 1/0 gauge
- Remote: gold-plated set screw
terminal, accommodates bare wire up to 8 gauge
- Speaker Output: gold-plated set
screw terminal, accommodates bare wire up to 8 gauge
Note: Alpine recommends 1/0
gauge power and ground wire (2 gauge minimum is
listed, but only if both power and ground wires
are 1 meter or less).
Right Side Of Amplifier:
- Line Inputs: 1 pair of gold-plated
stereo RCA jacks
- Speaker Level Input: Molex plug
input for supplied 4-pin harness
- Subsonic: switch; off, 15 Hz, 30 Hz
- Phase: switch; 0°, 180°
- Gain: rotary dial
- Bass EQ Level: rotary dial; 0-12 dB
- Bass EQ Frequency: rotary dial; 30-80 Hz
- LP Filter: rotary dial; 50-200 Hz
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