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car speakers cut out?


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nu age 
Member - Posts: 30
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Joined: January 28, 2006
Location: United States
Posted: March 12, 2008 at 1:40 PM / IP Logged  

I had a pioneer deh490ih head unit and a kicker 12L7 being pushed my a fosgate amp. My problem is that when I turn the head unit up my car speakers all turn off but not the sub. They are the stock speakers. After about a week of this the stock speakers went out completely. I replaced the deck with another after testing the stock speakers and finding they were good. Now I'm getting the same problem with the new deck. I turn up the deck and the speakers turn off but the sub keeps hitting. If the sub is not hooked up the speakers work fine.

I checked the wiring to make sure no wires are crossed and they are good. I replaced the battery(optima yellow top) thinking maybe the battery had gone bad and also checked the altenator and all is good. Any advice would be helpful thanks in advance. Fred

goodforcatfish 
Member - Posts: 12
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Joined: March 05, 2008
Location: South Dakota, United States
Posted: March 12, 2008 at 3:01 PM / IP Logged  

I have had similar problems, one i found is maybe its a bad rca cable, or a bad rca input on your amp-also if you have the polarity backwards...but check the rca cable. I replaced mine, and it stopped all problems.

nu age 
Member - Posts: 30
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Joined: January 28, 2006
Location: United States
Posted: March 12, 2008 at 3:24 PM / IP Logged  

Thanks goodforcatfish; I'll try the RCAs later today. Any other ideas?

cglovesaly 
Member - Posts: 25
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Joined: March 06, 2008
Location: Alberta, Canada
Posted: March 12, 2008 at 3:48 PM / IP Logged  
yeah i have the same problem, but with my subs cutting out at a high volume. maybe ill change my rcas. oh do u find the optima yellow top battery good. im thinking of investing in that. my battery gets totolly drained so im staranded on the side of the road.
cg
nu age 
Member - Posts: 30
Member spacespace
Joined: January 28, 2006
Location: United States
Posted: March 12, 2008 at 3:58 PM / IP Logged  

I really like the optima yellow top or the Orbital from napa. Both gel batteries work well. I always suggest an upgrade in battery when a person is upgrading their system. But lets not hijack my thread with battery talk, lets stay on task ;)

cglovesaly, I think your problem might be different from mine. When the sub cuts out its usually when the ohms are to low for the amp or when the amp is not getting enough power.

goodforcatfish 
Member - Posts: 12
Member spacespace
Joined: March 05, 2008
Location: South Dakota, United States
Posted: March 12, 2008 at 6:19 PM / IP Logged  

yes, nu age is right, the amp is trying to protect itself from blowing, i dont know what you are all running, but if you have it wired in parallel your amp probably isn't rated for the ohms, or the power.

also if you find that it is the rca's outputs on your head unit,nu age, you can try grounded the rca's to your power ant. ground, each wire, with a solder ground. i saw some pics somewhere on this forum, can't remember were. Its usually caused by a suface ground fuse blowing. let me now how it works!car speakers cut out? - Last Post -- posted image. 


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