Amplifier Owner’s Manual
© 2010 Phoenix Gold • www.phoenixgold.com
FRONT AND REAR INPUTS
Connect preamp signal cables from headunit to these inputs. The front
AND rear inputs must be used, if only the front input is used then the
rear speaker outputs will have no output signal.
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.
CROSSOVER FREQUENCY
Controls the crossover point for the speaker outputs.
BASS BOOST
Variable bass boost from 0 to +18dB @ 45 Hz.
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.
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+
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.
REMOTE
This must be connected to sw12V, 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.
SPEAKER OUTPUTS
Used to connect the amplifier to speakers. S400.4 minimum
impedance is 4 ohm bridged or 2 ohm stereo.
s400.4
4 Channel Power Amplifier
