This is a discussion on Possible blown speakers/amp help within the Interior Mods forums, part of the Tech & Modifying & General Repairs category; Originally Posted by LPPTundWRX Sounds like the frequency you hear is probably your alternator which means you could of popped ...
both amps are grounded on a bolt underneath the trunk liner..seems to be good as i haven't had a problem untill last night
hmmm... not sure then, but my money would be alternator noise, as it seems that the pitch of the whine/buzz goes up with engine RPMs....
yeah i'm reading about alternator whine and that seems to fit the bill...but i have no idea why it started last night. maybe i shorted out something on my amp?
actually now that i think about it..there's been a slight whine at different RPM ever since I got my 2nd amp put in. but it was very slight and only noticeable when the volume was low so i didn't really think anything of it. but now it's 100x worse
I'd still double and triple check the grounding....
Is it a pioneer head unit?
Pioneer and a few others use a pico fuse on the head unit side of the RCA grounds... Sounds strange and unimportant, but if fooling with power while the RCAs are plugged in, it blows, easily.
Instead of fixing the fuse, wrap a bare wire around the outside (ground) of the female RCA connectors on the back of the head unit, and screw it into the head unit chasis or ground them somehow.
I'd put $10 on that helping if they were fine to begin with.
EDIT: Snagged a good picture of google to help explain...
Last edited by Heide264; 06-03-2010 at 08:10 AM.
2011 STi Build LogOriginally Posted by Trainrex
Resident Tuner @ WTF Tuning, LLC
-Part 1 - Reading, Data Logging, and Analyzing Data
-Part 2 - Turbocharger 101 & Basic Boost Control
-Part 3 - EcuFlash, Experimental Defintions, and a Drive By Wire Intro