Amplifier Owner’s Manual
R500.4 - R300.4
4 CHANNEL POWER AMPLIFIER
INPUT
Connect preamp signal cables from the head unit to these terminals.
HIGH LEVEL INPUT
Connect a factory system’s headunit or amplifier outputs. Using the HI level input the amplifier will automatically turn on and off using the factory system’s audio signal as a trigger. The high level auto on switch turns off the auto turn on function, but the high level input still works as normal.
2ch/4ch MODE
2ch: Headunit has one pair of cables into front Input.
4ch: Headunit has two pairs of cables into front and rear inputs.
LOW PASS LEVEL CONTROL (LPL)
This port is for connecting the optional remote level control (LPL44). This allows up to 20dB of volume adjustment. This is not a bass boost, it controls the level of the entire low pass signal of the rear channels.
OUTPUT
Provides a full range signal for an additional amplifier. There is no signal loss if using this output.
CROSSOVER FREQUENCY
Controls the crossover point for the speaker outputs.
BASS BOOST
Variable bass boost from 0 to +18dB @ 45 Hz.
REMOTE MONITORING DISPLAY (RMD)
Connect optional RMD Voltage Display to this port
LEVEL
Used to reach maximum amplifier power with a wide variety of headunits.
CONFIG
FLAT: Crossovers are turned off
HP: High pass crossover is on
LP: Low pass crossover is on
12V+ | SPEAKER OUTPUTS |
This must be connected to the fused positive terminal (+12V) of the car’s battery. The fuse must be located within 18 inches of the battery.
Used to connect the amplifier to speakers. Use the left + and right - terminals for bridged mode. Minimum impedance is 4 ohm bridged or 2 ohm stereo.
REMOTE
This must be connected to switched +12V, usually a trigger wire coming from the head unit or ignition. This is not used if using Hi input auto on feature.
GND
This must be connected to the negative terminal of the car’s battery or bolted to a clean, unpainted part of the chassis of the vehicle.
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