OrionStang Posted January 19, 2012 Author Report Share Posted January 19, 2012 All my amps ground directly to the rear battery bank. I really believe it is the amp itself, just wanting to know what it is, to try and get an idea of how major the repair will be. Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
BFF Larry Posted January 19, 2012 Report Share Posted January 19, 2012 Do you have an eq Quote Team Clearly Louder (MECA)Team DC Audio ++* SELLING the CACTUS SOUNDS K12 for $1550 shipped *++ HMU!!! 3 flips. nollie flips. big flips. hardflips. - steez Youtube Channel My Build Log 95 Bonneville SSE - WALLED/4th Order - ~30 cubes - *thanks LoganBerry, CortezDVT, Cj18, SuperCharged DC, Ryan-RAM Designs,LoudNLow931* Link to comment Share on other sites More sharing options...
OrionStang Posted January 19, 2012 Author Report Share Posted January 19, 2012 No EQ. I'm going to swap in another amp, and if the sound goes away, it is an amp issue. Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
Guest Posted January 19, 2012 Report Share Posted January 19, 2012 ...pioneer headunit? Quote Link to comment Share on other sites More sharing options...
OrionStang Posted January 19, 2012 Author Report Share Posted January 19, 2012 Excelon x794. Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
00sdime00 Posted January 19, 2012 Report Share Posted January 19, 2012 Make a Muting plug out of an old pair of rca's...cut them a few inches away from the plug and then solder the outer shield to the inner conductor for each. Insert said muting plug into the amp. If your noise disappears, it's not the amp....if it stays, well then it's the amp. Quote A half-wit gave you a piece of his mind, and you held on to it. My Youtube vids...enjoy anythings possible with the right build =] we accept visa and mastercard =] Link to comment Share on other sites More sharing options...
OrionStang Posted January 19, 2012 Author Report Share Posted January 19, 2012 (edited) Make a Muting plug out of an old pair of rca's...cut them a few inches away from the plug and then solder the outer shield to the inner conductor for each. Insert said muting plug into the amp. If your noise disappears, it's not the amp....if it stays, well then it's the amp. Cut them, but not in half, right? I'm gonna go swap the amps right now. See what happens. Edited January 19, 2012 by OrionStang Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
OrionStang Posted January 19, 2012 Author Report Share Posted January 19, 2012 Swapped in a different amp and there is no more whine. Amp internals? Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
Wicks Posted January 19, 2012 Report Share Posted January 19, 2012 Could try a portable music player and directly connect it to the RCAs on each amp. If it's the headunit or the RCAs (probably not since you changed those) then the noise should go away with the portable player since its not connected to anything in the car. Could also use a separate battery directly connected to the amp and disconnect your car power supply (batteries/alt). If the noise stays with all these scenarios then something probably came loose in the amp. Loose ground somewhere sounds possible. Have a DMM? Could check the resistance between the amp ground terminal and the RCA grounds. Should be directly connected (depending on the amp) and read ~0.3ohms... Quote This post sent with 100% recycled electrons. 2004 BMW M3Mechman 280A 2 - XS Power XP30001 - XS Power D375 500F of Maxwell SuperCaps (soon to be 1000F) iPadMini2Dash mounted O-scopeAudison bitOne (Remote DRC MP) Highs Amp - PPI Art A404 Hertz HSK130 (HSK165 waiting...) DC Audio DC9.0K 2- DC Audio XL12m2LEGAL - 147.3dB @ 41Hz OUTLAW - 150.2dB @ 45Hz OUTLAW - 145.7dB @ 30Hz JUNE 2014 SOTM WINNER 2014 COLORADO PEOPLE'S CHOICE WINNER SOTM BUILD:http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026 Link to comment Share on other sites More sharing options...
will77530 Posted January 19, 2012 Report Share Posted January 19, 2012 what amp is it? Quote Link to comment Share on other sites More sharing options...
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