Amplifier Owner’s Manual
RX250.1 - RX500.1 - RX1100.1
MONOBLOCK POWER AMPLIFIERS
INPUT
Connect preamp signal cables from the head unit to these terminals.
SENS
Used to reach maximum amplifier power with a wide variety of headunits.
CROSSOVER FREQUENCY
Controls the lowpass crossover point for the speaker outputs.
BASS BOOST
Variable bass boost from 0 to +18dB @ 45Hz.
REMOTE BASS LEVEL CONTROL (RBC)
This port is for connecting the remote subwoofer level control. This allows up to 20dB of volume adjustment. This is not a bass boost, it controls the level of the low pass signal.
NOTE: This control is not compatible with the Phoenix Gold LPL44 level control.
SUBSONIC CROSSOVER FREQUENCY
Controls the highpass crossover point for the speaker outputs to eliminate extreme low frequencies.
OUTPUT
Provides a full range signal for an additional amplifier. There is no signal loss if using this output.
PHASE
This allows the phase of the output to be adjusted from 0 to 180 degrees. This adjustment can help achieve better “up front” subwoofer bass and resolve subwoofer cancellation problems in certain installations. Each installation is different, slowly adjust and listen for best results.
+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 switched +12V, usually a trigger wire coming from the head unit or ignition.
GROUND
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.
REMOTE MONITORING DISPLAY (RMD)
Connect optional RMD Voltage Display to this port.
SPEAKER OUTPUTS
Used to connect the amplifier to speakers. RX250.1’s and RX500.1’s minimum impedance is 2 ohms. RX1100.1’s minimum impedance is 1 ohm.
Phoenix Gold • www.phoenixgold.com
