Rom 0 Posted April 7, 2006 Hi guys. Ive had this interferance for ages. But finally decided id try and fix it. Its a buzz / whirr directly linked to revs. It doesnt get louder, but pitch changes with rpm. Now i tried suppresors on the alt and coil. Also about 78 different earths on the amp ! Ive also tried new power / earth for headunit. Earthing the rcas Earthing the headunit case Probably tried more too but thats all i can think of atm. Now is there a component im missing out. Its just annoying me, its not noticable when u got the stereo at a normal kind of volume really. But if u have it down low for chatting etc, its there in the background. Oh also, its mainly through the rears,but can be heard if i wind the gain right up on fronts. Sub is unaffected. If i turn the gains up, it gets a bit worse. So the rear gain is right down Share this post Link to post Share on other sites
Simes 248 2 Cars Posted April 8, 2006 I used to have this, when I turned the lights on it went away. Clean up the brown multi plug I found once this was removed all my troubles went away. Share this post Link to post Share on other sites
aeinstein 0 Posted April 8, 2006 these are really difficult to diagnose over the interweb. is the amp in the boot? if so do the power ad signal wires run down the car together? i don't want to insult you if you've tried it, but sometimes the power cable interferes with the signal. try running the rcas down the opposite side to the live/ switched, and see if it cures it. its worth a look! al Share this post Link to post Share on other sites
Phil H 16 Posted April 8, 2006 When mine did this, it was the alternator on it's last legs. Share this post Link to post Share on other sites
Rom 0 Posted April 9, 2006 HAHA ! No they run opposite sides Im pretty sure its nothing to do with my wiring, though ofc i could be wrong. The alt is pumping out 15v,not sure if that can be gauged as too how close to death it is though. This brown plug, is this the one dangling above my gearbox ? Share this post Link to post Share on other sites
engine killer 6 Posted April 9, 2006 i had a similar case before. i rewired all amps and head unit direct from battery (both +ve and -ve) and extra earthings for all of them. extra earthings were also added for alternator and valve cover and, it works! Share this post Link to post Share on other sites
Paintguy 0 Posted April 10, 2006 The title says radio interference. Is it just on the radio, not CD's (tapes? ) If so, then look to your aerial first. If it's not making a good earth connection with the roof, that could cause it. Share this post Link to post Share on other sites
Rom 0 Posted April 10, 2006 Sorry i should have said stereo really Its on anything, once u turn stereo on, it takes about 3-4 secs, then it starts. The headunit takes about that long to kick into life. Share this post Link to post Share on other sites
