Question about Cerwin Vega XL 600.1 Car Audio Amplifier

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Protection light turn on with sound

When i connect the rca cables to the amp the protection light comes on whenever bass hits and it does it even when no speakers are connected

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It's likely that the amp is defective but you should check the shield ground of the RCA signal cables before sending the amp off for repair.

 

Disconnect the RCA cables from the amp.

 

With your multimeter set to ohms, measure the resistance from the outer shield of the RCA cable to chassis ground. If it's more than a few ohms, that could be causing your problem.

 

If this is higher than a few ohms, short the meter's leads together to make sure the meter will go down to 0 ohms.

 

To check the shield ground of the head unit (assuming that the head unit is driving the amp directly), disconnect the RCA cables from the head unit and measure the resistance from the RCA output shield to the case of the head unit. It should essentially read 0 ohms.

 

 

Posted on Oct 22, 2007

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sounds like ur gains are set to high and is going into protect mode

also what ive seen happen before is the speakers (if mounted in metal shelf or door and arnt bolted down correctly can flex under bass notes and flex the speaker that much the termanls short onto the metal and amp hits protect mode
(rare but worth a look if you think u have elimanted most other things Had a dude come to me when i was working in sydney with this problem )

also could be things like clipping protection , overheat protection ,amp drawing to much current from the alternator

do your lights dim when you hit the bass notes ?

get back to me and im sure we could solve this problem

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