User Manual
© 2020 Phoenix Gold • www.phoenixgold.com 
LOW PASS FILTER (LPF) 
Sets low pass crossover frequency. Continuously variable from 50Hz to 250Hz 
SUBSONIC 
Continuously variable lter from 10Hz-55Hz to remove low inaudible frequencies to 
increase system efciency and protect speakers.
BOOST 
Controls the bass boost from 0 to +18dB
REMOTE LEVEL CONTROL  
This port is for connecting the remote subwoofer level control knob. This allows up to 
20dB of volume adjustment. This is not a bass boost, it controls the level of the low pass 
signal. 
INPUTS 
If you are using RCA or high level signal from an aftermarket head unit, select UNBAL. If 
you are using high level from a OEM factory source unit or factory amplier select BAL. 
INPUT 
Connect preamp signal cables (RCA) from the source unit to these terminals. 
OUTPUT 
Used to connect to a secondary amplier without degrading signal strength. 
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