Rockford Fosgate PUNCH 4020 DSM Diagnosis, Symptom, Remedy, Speaker Output, Low or Distorted

Symptom	Diagnosis	Remedy
Speaker Output	Input gain signal for	Readjust input gains of
Low or Distorted	amplifier set too low.	amplifier.
	Source unit output too	Check system with known
	low.	working source and repair
		or replace orignal source as
		needed.
	Speakers wired out of	Check speaker polarity and
	polarity from the left to	correct as needed.
	right channel.
	XCards are missing or	Check signal input switch
	not placed properly in	and XCard positons and
	crossover slots and/or	repair or replace as neces-
	switch not properly se-	sary.
	lected.
	Low battery voltage or	Check the alternator, bat-
	large voltage drops to	tery, fuse and wiring and
	the amplifier under load.	repair as necessary.
Amplifier Noise	Voltage spike from out-	Disconnect input signal to
(Turn-on Pop)	put of preceding com-	amplifier and turn ampli-
	ponent is entering am-	fier on and off. If noise is
	plifier through input sig-	eliminated, connect REM
	nal.	lead of amplifier to source
		unit with a delay turn-on
		module.
	Voltage spike from re-	Use different 12 volt
	mote turn-on lead is	source for REM lead of
	entering through REM	amplifier. (i.e., battery di-
	input terminal.	rect) If noise is eliminated,
		use relay to isolate ampli-
		fier from noisy turn-on
		output.

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