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feedback/whine


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godsegoizhuge 
Copper - Posts: 214
Copper spacespace
Joined: December 12, 2002
Location: United States
Posted: August 28, 2007 at 5:50 PM / IP Logged  
Hi, I'm getting a nasty feedback/whine from my speakers. I've went through and checked everything out. Replaced the ground for the amps, which is ran through a dist. block. Also replaced the mounting point for the head unit ground. Basically it has noise when the car is running and when the car off.   
My setup at this moment involves a pioneer N2, a kicker 4 channel amp and JL audio components in the front and rear. I had a memphis belle amp installed before but I had to send it out for service since it was being thrown into protection mode.Is it possible that whatever was causing my whine could of affected the memphis?
dwarren 
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Joined: December 03, 2004
Location: California, United States
Posted: August 28, 2007 at 5:57 PM / IP Logged  
What sort of vehicle?
godsegoizhuge 
Copper - Posts: 214
Copper spacespace
Joined: December 12, 2002
Location: United States
Posted: August 28, 2007 at 6:06 PM / IP Logged  
oops sorry. 95 grand cherokee.
dwarren 
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Posted: August 28, 2007 at 6:12 PM / IP Logged  
Noise while the car is on and off, interesting. Have you tried unplugging the RCA's at the amp, and turning the amp on with out audio signal?
godsegoizhuge 
Copper - Posts: 214
Copper spacespace
Joined: December 12, 2002
Location: United States
Posted: August 28, 2007 at 6:19 PM / IP Logged  
Yes I've done that, nothing happened then.
jmelton86 
Gold - Posts: 1,228
Gold spacespace
Joined: February 07, 2007
Location: South Carolina, United States
Posted: August 28, 2007 at 6:28 PM / IP Logged  
cough, cough, cough,... Pioneer ...,cough, cough.
2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
godsegoizhuge 
Copper - Posts: 214
Copper spacespace
Joined: December 12, 2002
Location: United States
Posted: August 28, 2007 at 6:29 PM / IP Logged  
so basically its the head unit? what exactly could be causing the problem?
jmelton86 
Gold - Posts: 1,228
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Joined: February 07, 2007
Location: South Carolina, United States
Posted: August 28, 2007 at 6:57 PM / IP Logged  

It possibly could be. Pioneers are known for having bad RCA negatives. To test, ground four small wires to your amp ground terminal, and connect each one of the other ends to each RCA negative (have your sub amp off -only testing the 4channel as noise is easier to hear through high-pass speakers). The RCA negatives are, thankfully, the outer connection on the jack so you can simply just touch the other ends of the wires to the outer metal part of each RCA jack on the amp. From what I know, you should hear a pop and then the noise should be gone.

Let us know what happend.

2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
godsegoizhuge 
Copper - Posts: 214
Copper spacespace
Joined: December 12, 2002
Location: United States
Posted: August 28, 2007 at 7:13 PM / IP Logged  
Okay, I'll give that a try tomorrow when I have more daylight. If that does end up working, how would I go about fixing it?
jmelton86 
Gold - Posts: 1,228
Gold spacespace
Joined: February 07, 2007
Location: South Carolina, United States
Posted: August 28, 2007 at 7:35 PM / IP Logged  
Simply solder the wires to your outer RCA connections, on the jack itsself, and ground the other ends out. You'll want to do this to your sub-amp RCA connections as well, if this is even the problem.
2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
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