n8ball2013 Posted July 14, 2009 Report Share Posted July 14, 2009 Jeff are your rcas grounded yet? Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
lanman31337 Posted July 14, 2009 Author Report Share Posted July 14, 2009 Yes, tried grounding the RCAs, made no difference to the sound brother. That was one of the first things I tried. When my ground was at the front battery, it sounded real bad, like rice crispies when I'd try to ground the RCAs. Now it makes no difference. I've quadruple checked every connection, made sure nothing's shorting, any audio wires that cross the power cables go 90 degrees to eliminate any RFI. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
n8ball2013 Posted July 14, 2009 Report Share Posted July 14, 2009 Yes, tried grounding the RCAs, made no difference to the sound brother. That was one of the first things I tried. When my ground was at the front battery, it sounded real bad, like rice crispies when I'd try to ground the RCAs. Now it makes no difference. I've quadruple checked every connection, made sure nothing's shorting, any audio wires that cross the power cables go 90 degrees to eliminate any RFI. you only have the one amp in the car right now? Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
lanman31337 Posted July 14, 2009 Author Report Share Posted July 14, 2009 Yes, just the 4 channel. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
n8ball2013 Posted July 14, 2009 Report Share Posted July 14, 2009 switched amps at all? im wondering if its the amp. or even tried powering a coax off the head unit to check that? internal amp defeatable? It may cause feedback if its fucked up. Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
lanman31337 Posted July 14, 2009 Author Report Share Posted July 14, 2009 I had some noise with my old amp also. Old amp is in my buddy's car and it has zero problems. On the Panasonic the internal amp is defeatable, and I did turn it off. Made no difference. I've tried three head units now. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
lanman31337 Posted July 14, 2009 Author Report Share Posted July 14, 2009 The only thing that totally eliminates the noise is of course hooking any of the head units to a separate power supply. I have zero noise that way. Even with a ground right slap dab on the same terminal that the amp is on (back battery), I still have alternator whine. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
DownSouthCustom Posted July 14, 2009 Report Share Posted July 14, 2009 (edited) What year and model vehicle? I installed a Panasonic CQ- VD7003U in my 2008 Ram and had same problem. My 2003 Dakota has never had this problem. I got me a PAC SNI-1 ground loop isolator. Put it in back by amp and my noise almost completely went away. PAC said to put it in the dash behind HU. Noise completely gone for 1 full year now. The isolator plugs into RCA's inline between HU and Amp. I didn't expect the results I got because my alt. whine and interference noise was bad. You could hear my doors open and close through my sub. I'd give an RCA ground loop isolator a shot. If you have not already. Edited July 14, 2009 by DownSouthCustom Quote Link to comment Share on other sites More sharing options...
lanman31337 Posted July 14, 2009 Author Report Share Posted July 14, 2009 The problem with most of the cheaper ground loop isolators is of course you lose a lot of your midbass, since that's what the frequency the noise is. It's a 1997 Pontiac Sunfire. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
DownSouthCustom Posted July 14, 2009 Report Share Posted July 14, 2009 The problem with most of the cheaper ground loop isolators is of course you lose a lot of your midbass, since that's what the frequency the noise is. It's a 1997 Pontiac Sunfire. Yeah I just have my sub amp wired in the Ram. Going for SQ in this being daily driven so bout to hook up my 5 channel and my 2 channel so I will be dealing with this again next week. Gonna keep watching post cause for SQ gonna need my mid bass. Sorry no help to you but thanks for letting me know that Im gonna have to deal with this BS too. If you figure it out please post. Thanks Quote Link to comment Share on other sites More sharing options...
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