Rockford Fosgate 4-CHANNEL AMPLIFIER owner manual Input/Output Terminal Side

Input/Output Terminal Side

Front Treble	Front Input	Front Bass	Rear Treble	Rear Input	Rear Bass
Adjustment	Gain	Adjustment	Adjustment	Gain	Adjustment
Control	Control	Control	Control	Control	Control

Front Input	Front+Rear	Rear Input	0/180° Rear	Front/Rear
Connectors	Summed Pass-Thru	Connectors	Phase Selector	Input Switch
	Connectors		Switch

Front/Rear Input Switch

This switch allows you to use the front input to drive both Front and Rear channels. Switching to Rear position allows you to run separate Front and Rear inputs. This eliminates the need for a "Y-adapter" when using the amplifier in a bi-amplified or 4-Channel mode.

0/180° Rear	This switch enables you to easily invert the phase of the
Phase	Rear channels on the amplifier without having to discon-
Selector	nect the speaker wires. See the wiring diagram on page
Switch	17 for use.

Treble/Bass These controls adjust the amount of treble and bass response desired. To increase the amount of response, turn the controls clockwise; to decrease, turn the controls counterclockwise. Note that there are separate Bass and Treble controls for Front and Rear channels.

Input Gain Controls

These controls are factory preset to 500 millivolts to match most head units and are variable from 100 millivolts to two volts. (More than likely they will not need adjusting.)

If just a little volume from the source unit drives the amplifier into distortion, reduce the input gain controls so that the distortion doesn’t start until the source volume is at about 3/4 of its rotation. Note that there are separate Front and Rear gain controls.

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