pk222 Posted January 27, 2009 Report Share Posted January 27, 2009 hey guys, I'm tryin to help a friend out, he just got a 2000 mustang and we changed the head unit from a old alpine to a pioneer 5900 and now its getting engine noise threw the rear speakers. for some reason the rear speakers are hooked up to an amp and the front aren't. He does not have the mach 460 system its all been replaced. I've heard of pioneer head units having problems with the rca's sometimes and somehow people grounded them and it went away, could this be the problem? if so how do you ground the rca's. I tried to search for this but nothing came up. Temporarily he just unhooked the rear amp and is just running the front speakers but he's installing his subs soon and wants to fix the rear speakers and make sure it doesn't happen with the subs too. thanks in advance for any input Quote Link to comment Share on other sites More sharing options...
Red-navi-916 Posted January 27, 2009 Report Share Posted January 27, 2009 (edited) this question was asked like 300 times,idk i guess i can say Rca's even thou already know or by me it was the deck.so idk could be a few of those problems Edited January 27, 2009 by Red-navi-916 Quote BUILDLOG http://www.stevemeadedesigns.com/board/ind...showtopic=61862 "98crewcab"Never a POS....just always "a work in progress" lol that's how we roll bitches!!! Your a lowlife kid. I bet your mother wants to kill herself for not swallowing your ass. Link to comment Share on other sites More sharing options...
pk222 Posted January 27, 2009 Author Report Share Posted January 27, 2009 I know its been asked before but I tried the search and it didn't work. we just took the head unit out of his truck to put it in the mustang and the rca's were fine in the truck so I don't think it could be that. Quote Link to comment Share on other sites More sharing options...
uhoh_45 Posted January 27, 2009 Report Share Posted January 27, 2009 Quote R.I.P! (Nov-29-2009) 92 explorer - 4 Atomic Apxx 15s duel .7s - 4rth order bandpass wall -4 powerbass XA-3000D's - 16 8volt batts wired to 16 volts - (9+/9-) runs 0gauge - 152.3 Db @ 29hz BUILD LOG current build 97 chevy lumina4 - 1 Atomic Apx 18 - 6 cube slot port trunk sealed off - 1 powerbass XA-3000D - 2 optima G31s in spare tire18 1 run 1/0 lumina build log Link to comment Share on other sites More sharing options...
lance_aka_64 Posted January 27, 2009 Report Share Posted January 27, 2009 ^^^^^x2^^^^^ try grounding your rca's like shown in the pic. Quote Need any thing chromed? Hit me up!!! gamer tag: (360) mEmEnToMoRi64 My Myspace refs: from here: RollinSoLow, Derrick824, Ray from c.a.c.o. : teamsubgopoof, splvictim20, SundownAudioNY from C.A.J. : Donpisto, spladdict19, CAJunkyard, JBLCAMRY, DasBot (robot underground) from ca.com: alxmlr789,photocrazy8 Link to comment Share on other sites More sharing options...
pk222 Posted January 27, 2009 Author Report Share Posted January 27, 2009 ok cool thanks guys. Quote Link to comment Share on other sites More sharing options...
Ram Posted January 27, 2009 Report Share Posted January 27, 2009 I can honestly say Ive never seen that done before. Worth a shot. Quote Link to comment Share on other sites More sharing options...
uhoh_45 Posted January 27, 2009 Report Share Posted January 27, 2009 i have had to do that to every one of my pioneers, its a common fact that they have bad rca grounds Quote R.I.P! (Nov-29-2009) 92 explorer - 4 Atomic Apxx 15s duel .7s - 4rth order bandpass wall -4 powerbass XA-3000D's - 16 8volt batts wired to 16 volts - (9+/9-) runs 0gauge - 152.3 Db @ 29hz BUILD LOG current build 97 chevy lumina4 - 1 Atomic Apx 18 - 6 cube slot port trunk sealed off - 1 powerbass XA-3000D - 2 optima G31s in spare tire18 1 run 1/0 lumina build log Link to comment Share on other sites More sharing options...
Texas Tech Posted January 27, 2009 Report Share Posted January 27, 2009 Here is the thread on this site: http://www.stevemeadedesigns.com/board/ind...showtopic=15452 Where did you get that pic UhOh45, I have seen it before...? Quote Baylor University Accounting Link to comment Share on other sites More sharing options...
sweet&low Posted January 27, 2009 Report Share Posted January 27, 2009 This happens because pioneer is the company that puts a diode on the ground part of the RCA's and sometimes if you unhook the the RCA's before unhooking the power to the amp it can send a voltage back up the RCA's and blowing that diode which causes you to loose ground. So by grounding the out side of the RCA plug it gives it new ground. This i was what i was told by a pioneer tech. It wont hurt anything if you do the fix it actually how it should be done internally. Quote Link to comment Share on other sites More sharing options...
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