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thump went turning on radio

  • Thread starter Thread starter demented22
  • Start date Start date Apr 9, 2012

demented22

Member
Nov 26, 2011
222
6
18
pittsburgh, pa
Apr 9, 2012
#1
  • Apr 9, 2012
  • #1
Not real sure what all is done to my car Just picked her up. It does have an Eclipse cd3200 H.U.. When I turn on the radio the speakers thump. There are no subs or aftermarket amps.
 

ace940

Member
Oct 16, 2011
87
1
17
Apr 9, 2012
#2
  • Apr 9, 2012
  • #2
so is there a problem? ur lucky u have any bass.
 

demented22

Member
Nov 26, 2011
222
6
18
pittsburgh, pa
Apr 10, 2012
#3
  • Apr 10, 2012
  • #3
I guess not a prob just an anoyance. Everytime I turn on the radio I get a loud thunp from the amps turning on. Not sure if I went to a differnt harness if I could eliminate the thump
 

Routs

Member
Aug 10, 2003
144
2
19
Edmonton, Alberta, Canada
Apr 12, 2012
#4
  • Apr 12, 2012
  • #4
ace940 said:
so is there a problem? ur lucky u have any bass.
Click to expand...

Lol, he's not talking about thump in the sense of bass. He's talking about a sudden "surge" of sound that comes on when an amplifier turns on after the head unit.

As for the original issue, are you 100% certain there isn't an aftermarket amplifier somewhere in there? It would be very unusual for just a deck to cause that issue at turn on.

With an aftermarket amp, I believe a solution is to put a resistor in line with the speakers to prevent this from happening. Maybe possible with a factory system as well.
 

demented22

Member
Nov 26, 2011
222
6
18
pittsburgh, pa
Apr 12, 2012
#5
  • Apr 12, 2012
  • #5
I haven't found any yet. may try to get a new head unit. The guy at the custom shop that just did my windows said that the one i have is pretty old.
 

demented22

Member
Nov 26, 2011
222
6
18
pittsburgh, pa
Apr 14, 2012
#6
  • Apr 14, 2012
  • #6
Update: I was removing the radio trim panel to paint it and ended up removing half my dash lol. So anyways here is what I found. The harness they used to adapt to the factory wiring only has one large plu and a smaller plug connected to a grey wire and small black terminal. Now where I am confused is there are three of the grey wires with black terminals and only one is connected. I am guessing these leads go to the factory amps. Is something wrong or is this normal?
 

iskwezm

10 Year Member
May 24, 2005
4,159
20
79
Rowland Heights,California
Apr 18, 2012
#7
  • Apr 18, 2012
  • #7
you probably need to limit the voltage on the amp turn on wire if you have factory amps.
 
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