Davom97 Posted February 4, 2012 Report Share Posted February 4, 2012 Hey Folks, I recently had a 6" Bazooka sub, a Boss Chaos Epic 5 channel amp & a RE-Q5 installed. I love the result with one exception: I now have a high pitched sound coming from all sources on my SEL's MFT head unit. The sound is at a constant pitch and sounds very much like a 16 kHz tone. I know many of you have this same set up, so I'm wondering if any of you found this same problem. If so, is there something simple I can to do fix it? If it's complicated, I'll take it back to the installer and let him chase the problem down. Peace, DM Quote Link to comment Share on other sites More sharing options...
Davom97 Posted February 4, 2012 Author Report Share Posted February 4, 2012 (edited) Just ran a quick test. The high pitched noise only happens when the ignition is fully engaged. It is not there when the key is in the ACC position nor the ON position, but when I crank the car all the way, it's there. FWIW. Edited February 5, 2012 by Davom97 Quote Link to comment Share on other sites More sharing options...
fletcher Posted February 4, 2012 Report Share Posted February 4, 2012 Sounds like a ground loop problem. Try googling something like alternator whine speakers. Quote Link to comment Share on other sites More sharing options...
LightningFastFord7 Posted February 7, 2012 Report Share Posted February 7, 2012 It sounds like a power wire has been ran too close to a signal wire. Quote Link to comment Share on other sites More sharing options...
Dingo Posted February 7, 2012 Report Share Posted February 7, 2012 +1 on the ground loop. Quote Link to comment Share on other sites More sharing options...
Davom97 Posted February 10, 2012 Author Report Share Posted February 10, 2012 Well, I took it back to my installer and he tinkered with the gain on the RE-Q5 and also installed two RCA noise filters. That did the trick. No more 16 kHz tone. He made some other adjustments to the overall sound stage because I was concerned that things were too bright and harsh. Sounds much warmer now. Really glad I've upgraded the sound system. Can't wait until I get the MFT software upgrade. Thank you guys for your input. Peace, Quote Link to comment Share on other sites More sharing options...
securinu Posted February 20, 2012 Report Share Posted February 20, 2012 RCA filters= installer not knowing how to fix the problem correctly. Filters kill sound quality. Quote Link to comment Share on other sites More sharing options...
Davom97 Posted February 20, 2012 Author Report Share Posted February 20, 2012 RCA filters= installer not knowing how to fix the problem correctly. Filters kill sound quality. You got any suggestions or you just gonna be critical? Peace, DM Quote Link to comment Share on other sites More sharing options...
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