you tried all the ideas i had for fixes. i will have to keep up with this in case the wife wants something added to her 18 m3
High pitched ringing noise after amp install
Recently had a Rockford Fosgate amp installed for my door speakers. Problem is that the amp is picking up electrical interference from somewhere and relaying it to the full ranges in the dash. A constant high pitch ringing noise. If I disconnect the inputs to the amp, the noise goes away. So it’s the signal not the amp. I’ve had this happen before on a previous vehicle with the same amp. The noise would stop if I turned off the DRLs. This time it’s not the DRLs and I can’t find anything that turns off the noise.
HOWEVER the noise does turn off when the vehicle is turned off for about 30 seconds but with all the audio and infotainment still running. Ground loop isolators didn’t work, different RCAs didn’t work, moving wires around didn’t work. Any thoughts or solutions?
Just to reiterate, SOMETHING is being turned off during those 30 seconds and that’s when it noise goes away. I just don’t know what.
HOWEVER the noise does turn off when the vehicle is turned off for about 30 seconds but with all the audio and infotainment still running. Ground loop isolators didn’t work, different RCAs didn’t work, moving wires around didn’t work. Any thoughts or solutions?
Just to reiterate, SOMETHING is being turned off during those 30 seconds and that’s when it noise goes away. I just don’t know what.
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He didnt cover all the bases.
OP, HOW do you have it hooked up to the car?
OP, HOW do you have it hooked up to the car?
Professional install, couldn’t tell you the details of what they didHe didnt cover all the bases.
OP, HOW do you have it hooked up to the car?
Gotta take pics dude, id bet any amount of money they did it wrong. Or ask them to point out what they did. If they used an LOC its wrong.
The old guy in me wants to say "Amp is working fine. Ringing noise is your ears. Turn down the volume!"
Sorry, not helpful, but couldn't resist. Best of success tracing the problem...
Sorry, not helpful, but couldn't resist. Best of success tracing the problem...
Line output convertor.whats loc?
What’s wrong with a LOC?Gotta take pics dude, id bet any amount of money they did it wrong. Or ask them to point out what they did. If they used an LOC its wrong.
Forgot to mention, the amp gain is all the way up. I know I know… however it is the only way to achieve no input clipping from the factory signal. If I back off the gain the noise goes away but it’s not loud enough to really listen to with the windows down on the highway. 100+ rms watts of power with 90+ db speakers, that shouldn’t be a problem. So I guess the new question is why does the amp have to be turned up so high to get the level of volume it’s supposed to do at half-2/3rds of gain? Is the factory signal just that bad and nothing can be done?
Dude, im telling you, they installed it wrong. I cant put my Kicker 352xi gain above half without killing the output signal and im only running the dash and font door speakers. Im betting real MONEY that they used an LOC on the amp input and its not needed even on the non Bose system cause its under 4v output. Read the stuff in my sig if you dont believe me.
Pretty much what Talon is saying; they installed it incorrectly. LOC is not needed. Car audio 101......never turn amp gains up full gain. It's never needed.
Tell us about the rest of the system. Where is the amp installed i.e. trunk or under pass. seat?
Tell us about the rest of the system. Where is the amp installed i.e. trunk or under pass. seat?
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