Stereo dies out when there is a lot of bass

[bowdown88]

I have an '89 Benz that I recently put 2 kicker comp 12's and a pioneer 760watt amp in. It worked fine for about a week but now it is acting up when I turn the radio too loud. My friend that works on cars said I could need a more powerful alternator, while my friend that has a system in his car says the subs could be wired wrong. Anyone know what the problem would be?

Click to read more...

 

[Alpineinstaller 10+ year member]

what kind of cd player do you have? Voil config?Guage power and ground wires?

 

[hoss 5,000+ posts]

sounds like a voltage issue.

id say your friend is right

 

[bowdown88]

I have a Kenwood KDC-7011 44wx4

Scosche 4 guage wires.

 

[Alpineinstaller 10+ year member]

are they single or dual voice coil and what ohm?

 

[chinny 5,000+ posts]

its a voltage problem, when you turn up your system = takes more power from car, get an HO alt.

 

[chinny 5,000+ posts]

or the amp might be turning off due to heat or from a grounded wire thats touching some metal

 

[bowdown88]

Uh.. not very sure... I got them used. They are a few years old. But I think they are 4ohm. Well the guy who hooked my system up put the ground wire in between a bolt in my car. Where is it supposed to go?

 

[hoss 5,000+ posts]

oh yeah, that is VERY bad when that happens. that means your voltage is dipping dangerously low. prepare yourself for your amp to die, your HU to die, and possible damage to your cars computer.

low voltage is a very serious issue...

 

[Alpineinstaller 10+ year member]

does the amp go into protect mode or what??

 

[hoss 5,000+ posts]

sounds like the voltage is dipping to about 9v and shutting the HU off. not sending the amp into protect

 

[bowdown88]

Nah. It won't go into protect. I had another amp before I had this one that did go in protect when the volume got about 5. The HU completely turns off and then turns back on or tries to turn back on repeatedly.

 

[Alpineinstaller 10+ year member]

ok now i agree that it is a voltage problem.

 

[Patrick Simmons 10+ year member]

I don't believe that a 700 watt Pioneer will drain an alt but its possible. I would say check your ground wire and make sure it is secure also check your gains. How do you have it configured?

 

[bowdown88]

I have the gain set to max. My ground wire is connected to a metal bolt/screw that holds up the metal backing of my backseat.