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qdaddy 
Copper - Posts: 133
Copper spacespace
Joined: March 06, 2006
Posted: October 27, 2008 at 11:54 PM / IP Logged  

07 tahoe installed clarion 675 cd player with 4channel amp have not a whine sound but more of backround hissing noise.   did not use the chime chevy harness just standard metra wiring but only use the 12v and ground from that plug.   have had same  problem in 08 tahoe with pioneer indash screen and 4channel amp and used the chime metra harness that time and had similar noise.     this also happened in 06 pontiac g6 and an 07 impala          has anybody witnessed this occurence in newer chevy vehicles and jus to mention all these vehicles had new wiring, radio, amp, speakers, and were installed by different installers using different brands each time                     thnx in advance

i am an idiot 
Platinum - Posts: 13,693
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: October 28, 2008 at 4:07 AM / IP Logged  
Turn the gains down until the noise goes away, and then see if you can still reach your desired listening level.
qdaddy 
Copper - Posts: 133
Copper spacespace
Joined: March 06, 2006
Posted: October 29, 2008 at 12:44 AM / IP Logged  
that helps a little but still some noise could it be the alternator on these newer chevy vehicles jus does not filter current noises and ripples out efficiently or maybe the factory battery i noticed the factory radio had similar noise but not as loud
i am an idiot 
Platinum - Posts: 13,693
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: October 29, 2008 at 2:07 AM / IP Logged  
If it were coming from the alternator, or it was alternator related, it would change according to engine RPM. What you are experiencing is known as System noise. If it was there with the factory system, and you added an amplifier, the amp amplifies whatever it sees. That is why it is no louder than before.   You can't have a 69 Camaro run an 8 second quarter mile and expect it to idle smooth.
qdaddy 
Copper - Posts: 133
Copper spacespace
Joined: March 06, 2006
Posted: October 29, 2008 at 3:05 AM / IP Logged  

we all know this but question still remains whats the deal there is low whine but mostly noise as i stated this been seen in multiple cars done by multiple installers talk bout possible hidden underlaying solutions not jus obvious observations 

qdaddy 
Copper - Posts: 133
Copper spacespace
Joined: March 06, 2006
Posted: November 11, 2008 at 9:34 AM / IP Logged  
wow no one with solutions here anybody with similar experience

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