Sub noise once radio turned off - Chevy Impala SS Forum
 
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post #1 of 8 (permalink) Old 04-25-2007, 05:12 PM
mr k gee
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When I turn my car off and the radio shuts off, turning the amp off...a second later the subs make a sound like you are plugging the RCAs into the amp when its powered.
Like you can tell the connection has been turned off, but its an electronic feedback and not an audio output from the cd.

Bad ground?
amp gain too high?
Feedback through cables under carpet?
IT never did this until I made a new ground to the metal of the trunk body.
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post #2 of 8 (permalink) Old 04-25-2007, 08:21 PM
liam
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this happened to a buddys car il check with hime tommorow n see what it was if no one has helped ya out
post #3 of 8 (permalink) Old 04-26-2007, 09:02 AM
Mr.Dark-Saint
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are we talking about that "POP" or that Sub Flexing noise? I always thought it was a bad ground.

Where did you relocate the ground to (and from)?

Anything else grounded to that same patch?
 
post #4 of 8 (permalink) Old 04-26-2007, 09:09 AM
mr k gee
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i took the ground from the trunk hinge...thin metal.
I moved it to the floor of the trunk. I have 2 amps grounded to the same area. One amp is not getting power though.

Its not a pop, its the flexing noise.
post #5 of 8 (permalink) Old 04-26-2007, 09:17 AM
the96pala
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Extra juice in the amp. Mine does it too.
post #6 of 8 (permalink) Old 04-26-2007, 11:22 AM
mr k gee
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what exactly does 'extra juice' mean? [img]graemlins/.gif[/img] [img]tongue.gif[/img]
post #7 of 8 (permalink) Old 04-27-2007, 09:03 AM
Mr.Dark-Saint
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Quote:
Originally posted by k gee™:
what exactly does 'extra juice' mean? [img]graemlins/.gif[/img] [img]tongue.gif[/img]
If it is "Extra Juice" it's basically the residual electricity in the AMP discharging. Kind a like having farts just 'cos you stopped eating Bean Burrito the gas in the GI track still needs to go somewhere [img]graemlins/.gif[/img] .

Did you run a Wire to the frame from the new spot?

Did you sand the paint off to get better contact?

And is the "Ground Wire" fat (like the "Power Line") and short (lacking extra wire) to the grounding point?

"Piggy Backing" the ground isn't good.

As for the other non powering AMP bad ground? [img]graemlins/.gif[/img] I just hope you didn't smoke it.
post #8 of 8 (permalink) Old 04-27-2007, 11:06 AM
mr k gee
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sanded, yes
wire to frame, no
proper wire girth, length, yes
piggyback, kinda...Im using a T plate ground...its like a 1x1/2" plate, and the other ground is mounted to one screw

the other amp isnt getting power because its not hooked up yet
not blown
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