Speaker whine
#1
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Speaker whine
So I finished installing my aftermarket stereo today along with the gmos-lan-04. When I started up my car I heard a really annoying whine coming out the speakers. I've tried different grounds for the headunit. The weird thing is no sound comes from the speakers unless the rcas from the amp are plugged in. Also when the RCAs from the gmos-lan-04 are plugged into the sw output it plays but still continues to whine. Is this a setting in my stereo? Bad ground? Bad RCAs?
#2
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Sounds like the metal bracket from hell claims another one.
When you put your new HU in was it a tight fit?
Did you have to use some force to get it all the way back there?
I had a similar problem, it was because my RCA's were getting pinched in the back between the plactic wall and the HU, the force was bending them.
Do your RCA's plug right into the back of the HU, or are they a dongle that hangs off the HU.
BTW- How are them chimes/signals treating you know with the GMOS LAN 04 in?
Oh yeah welcome to the forum
When you put your new HU in was it a tight fit?
Did you have to use some force to get it all the way back there?
I had a similar problem, it was because my RCA's were getting pinched in the back between the plactic wall and the HU, the force was bending them.
Do your RCA's plug right into the back of the HU, or are they a dongle that hangs off the HU.
BTW- How are them chimes/signals treating you know with the GMOS LAN 04 in?
Oh yeah welcome to the forum
#3
If all else fails to fix your problem its more than likely a ground loop problem.......run the ground for your deck to the back of the car and ground it to the same place as your amps are grounded to.......and the fm antenna sometimes causes ground issues........i have done this in all my vehicles and it has fixed speaker whine everytime.......good luck.....Later
#6
Not installing the antenna would be a good thing in this case........that is a source of alternator whine if it IS connected so that is not your problem.......ground the HU to the same place as the amps and you should be fine........Later
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Hmm
So I figured I could resolve the speaker whine by buying a ground loop isolator. It got rid of the whine however I can't hear my subs anymore. It seemed to have weakened the signal to the sub. I have my amp gain/bass boost set higher than normal and all the settings on my stereo set higher than normal. Still very little sound from the subs. Buying an aftermarket stereo is such a hassle. Does anyone else have gmos lan 04 and experience this or is it just my set up?
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no subz?
On your isolator does it have two wires that come off of it that dont go to anything? I yes than you need to ground those to the same place as the headunit and the amp. if you dont you will get a echo thru the rcas.
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The whine was coming from the front and rear speakers. The stereo has 3 preouts, 1 for the sub, 2 for fronts and rears. I put the ground loop isolator on the rcas connecting the amp to the stereo.
#13
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Man I feel your pain. Same exact problem with mine. Plug the RCA's to the AVIC D3 and its whines like crazy. Unplug them and its crystal clear. I ran grounds every damn where and still it whines. I've just given up and I decided to sell my amp and sub.
#15
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I ran the RCA's down the left side 1st and had noise, so moved them to the right and still had it. So I pulled them out and just stretched them across the car right down the middle and still nasty noise. I grounded the radio straight to the Chassis, and that didn't help. I guess I could try grounding the radio to the amp.
#17
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I'll try running a ground. The RCA's should be ok. They are Rockford Fosgate, never can tell though I guess.
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hmm
Wouldn't that be true if when the ground loop isolator was unplugged it produced the same output as it being plugged in? Once I unplug it it sounds normal but with whine. I almost think it lowers the output just to get rid of the whine. I'm going to try that ground thing and see if that works.
#22
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yes but you said you have 3 preouts, only have 2 ground loop isolators connected to only the front and rear.... along with less then normal sub output with a ok speaker output with the GLI connected. Either that sentance is wrong or somethings wrong with the HU. It shouldn't matter what you have connected to the front/rear the sub output should be isolated
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yes but you said you have 3 preouts, only have 2 ground loop isolators connected to only the front and rear.... along with less then normal sub output with a ok speaker output with the GLI connected. Either that sentance is wrong or somethings wrong with the HU. It shouldn't matter what you have connected to the front/rear the sub output should be isolated
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