bass_stalker Posted July 21, 2012 Report Share Posted July 21, 2012 i just installed a new alpine radio today, i wired up my intergrated turnon wire in these rcas and now i have a low alternator whine comming from my 4 channel, could the turn on lead be the cause? http://www.darvex.com/store/pc/Sound-Quest-by-Stinger-20-LED-RCA-Interconnects-120p918.htm Quote JEEP BUILD PROJECT ANTIBLING.2000 jeep Cherokee.HEADUNITAlpine Cda-9886SUBSTAGE1 acendent 18" audio mayhem motor with a TI basket and tantric parts1 prototype DAT hellfire 1000.1HIGHSStockELECTRICALdb link 0 gaugeKnuconceptz Kolossus 4 gauge1 xs power d3400 under hoodBig 3 upgradeold fourwheeler build The only way to delete your SMD account is for you crawl to steve meades door step on your knees and pleade for his forgiveness and acceptance to be released...He will either grant your wishes.....or choke you with a large piece of 0 gauge and electrocute you by hooking up a solid gold DC 12k at 0.000001 ohm and 10000 volts to your eye sockets and blow your head apart You guys act like you have never clogged a toilet and ran around the bathroom frantically hoping it don't overflow. Link to comment Share on other sites More sharing options...
Socky Posted July 21, 2012 Report Share Posted July 21, 2012 funny, i cant get rid of my alt whine either, ive tried ground loop, new rca's and such but still stay their, damn cherokee always has to be a bastard somewhere lol. Quote Jeep Cherokee 4dr -4.75 in front, new rusty's 4.5 in rear leafs -micky thompson 35x14.50x15 -locker rear -Rusty's offroad Engine/transmission/transfer case/crossmember/gas tank skid plates -Warn front bumper with 8000lb winch -Custom rear bumper -Warrior product tube doors (summertime) -Optima redtop (starter) -26XK miles and still runs like a bat out of hell Kenwood H/U 1/0 wire, 136 amp alt 200 ah batteries 12.7 daily 2 Apsm 1500 @ 2 ohm strapped on zv3 d1 with ns softparts Mb quart 125.4 wired to 4 aura 6's 3.6 cube box tuned to 36 plays down to 23hz Link to comment Share on other sites More sharing options...
bkolfo4 Posted July 21, 2012 Report Share Posted July 21, 2012 Disconnect the turn on in the RCA's, turn the radio on, then use a small jumper to jump from the BATT input on the amp to the remote input. this will turn th eamp on. If the noise is there, the lead in the RCA's is not the issue, if it is gone, run a new remote turn on. My guess is that is not the issue. 4 out of 5 times it is a bad ground, ground loop, bad/cheap RCA or RCA input jack on the amp or deck, or just a crappy amp. Brian Quote Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
Landon75 Posted July 21, 2012 Report Share Posted July 21, 2012 Ever since i installed those ive had noises. I already grounded my rcas along time ago when i blew that fuse inside the headunit but i havent bought any new rcas yet. It got much quieter when i switched amps but its still there. Bought them dirt cheap when darvex had that one day sale so i cant complain lol. Quote Link to comment Share on other sites More sharing options...
bass_stalker Posted July 21, 2012 Author Report Share Posted July 21, 2012 well i have a knukoncepts rca with a turnon lead that dosent make noise but thats on my sub amp, so i dont really need the lead on those other two rca's i just wired them so they would light up, i'll disconnect em tomorrow and report back, oddly enough it never did this with the dual Quote JEEP BUILD PROJECT ANTIBLING.2000 jeep Cherokee.HEADUNITAlpine Cda-9886SUBSTAGE1 acendent 18" audio mayhem motor with a TI basket and tantric parts1 prototype DAT hellfire 1000.1HIGHSStockELECTRICALdb link 0 gaugeKnuconceptz Kolossus 4 gauge1 xs power d3400 under hoodBig 3 upgradeold fourwheeler build The only way to delete your SMD account is for you crawl to steve meades door step on your knees and pleade for his forgiveness and acceptance to be released...He will either grant your wishes.....or choke you with a large piece of 0 gauge and electrocute you by hooking up a solid gold DC 12k at 0.000001 ohm and 10000 volts to your eye sockets and blow your head apart You guys act like you have never clogged a toilet and ran around the bathroom frantically hoping it don't overflow. Link to comment Share on other sites More sharing options...
neuspeedescort Posted July 21, 2012 Report Share Posted July 21, 2012 grounding is always first. right after...........wait for it.......you ran the rca's down the non loomed side of the car and or the opposing side as teh power wire right? NEUMAN Quote Link to comment Share on other sites More sharing options...
audiofanaticz Posted July 21, 2012 Report Share Posted July 21, 2012 Alternator whine is usually caused by 1 of 3 things. A bad ground someplace along the stereo. Shorted out RCA preouts on Pioneers when the pico fuse blows because people hotswap rca cords (meaning they unplug and plug rca's in and out of the radio or amp with the stereo turned on and they short the rca out by grounding out the center positive pin of the rca cable. RCA cords are ran too close to a high current power cable (such as the power wire for your amps). A ground loop isolator is only a band aid to the problem and limits the noise a little because the preout voltage from the headunit is being decreased by the ground loop isolator making the whine not as loud, but in return making your speakers not as loud from whatever amp the isolator is used on due to the reduced rca preout voltage. So you than have to turn the amp gain higher only to have the whine just as loud as it was before. Things to try to fix your problem are: Make sure your RCA cords are not crossing the path of your power wires anywhere, always run power/ground wires down the oppisite side of the vehicle as the RCA cords. Most the time rca cords usually pass close by your power wires in your amp rack or whatever your method is to mount the amp(s). Make sure all your amplfier grounds are good and tight, grounded to the vehicles frame or strong thick body panel with the paint removed and the ring terminal is secured with a bolt and nut. You can also trying to reground your headunit with a better ground and not use the vehicles factory ground in the oem radio harness ( make sure to test if this fixed the issue, if not and the whine is still there move onto the next step while your radio is pulled out). Ground the outer rca jackets on the back of the headunit (especially if its a pioneer, but Ive seen the issue on alpines too). Like this or you can take your radio apart and resolder the blown pico fuse if your good with small electronics. Quote Link to comment Share on other sites More sharing options...
neuspeedescort Posted July 21, 2012 Report Share Posted July 21, 2012 ^ i have never had an issue with pioneer. sony that is a world of issues. NEUMAN Quote Link to comment Share on other sites More sharing options...
bass_stalker Posted July 21, 2012 Author Report Share Posted July 21, 2012 check list rca's and power wire on opposing sides....... check good tight ground........ check is it a pioneer............... nope hot swapped rca's on amp .... nope factory radio ground.............. yes gonna relocate it grounded rcas............. not yet Quote JEEP BUILD PROJECT ANTIBLING.2000 jeep Cherokee.HEADUNITAlpine Cda-9886SUBSTAGE1 acendent 18" audio mayhem motor with a TI basket and tantric parts1 prototype DAT hellfire 1000.1HIGHSStockELECTRICALdb link 0 gaugeKnuconceptz Kolossus 4 gauge1 xs power d3400 under hoodBig 3 upgradeold fourwheeler build The only way to delete your SMD account is for you crawl to steve meades door step on your knees and pleade for his forgiveness and acceptance to be released...He will either grant your wishes.....or choke you with a large piece of 0 gauge and electrocute you by hooking up a solid gold DC 12k at 0.000001 ohm and 10000 volts to your eye sockets and blow your head apart You guys act like you have never clogged a toilet and ran around the bathroom frantically hoping it don't overflow. Link to comment Share on other sites More sharing options...
Pasta Prime Posted July 21, 2012 Report Share Posted July 21, 2012 Alternator whine is usually caused by 1 of 3 things. A bad ground someplace along the stereo. Shorted out RCA preouts on Pioneers when the pico fuse blows because people hotswap rca cords (meaning they unplug and plug rca's in and out of the radio or amp with the stereo turned on and they short the rca out by grounding out the center positive pin of the rca cable. RCA cords are ran too close to a high current power cable (such as the power wire for your amps). A ground loop isolator is only a band aid to the problem and limits the noise a little because the preout voltage from the headunit is being decreased by the ground loop isolator making the whine not as loud, but in return making your speakers not as loud from whatever amp the isolator is used on due to the reduced rca preout voltage. So you than have to turn the amp gain higher only to have the whine just as loud as it was before. Things to try to fix your problem are: Make sure your RCA cords are not crossing the path of your power wires anywhere, always run power/ground wires down the oppisite side of the vehicle as the RCA cords. Most the time rca cords usually pass close by your power wires in your amp rack or whatever your method is to mount the amp(s). Make sure all your amplfier grounds are good and tight, grounded to the vehicles frame or strong thick body panel with the paint removed and the ring terminal is secured with a bolt and nut. You can also trying to reground your headunit with a better ground and not use the vehicles factory ground in the oem radio harness ( make sure to test if this fixed the issue, if not and the whine is still there move onto the next step while your radio is pulled out). Ground the outer rca jackets on the back of the headunit (especially if its a pioneer, but Ive seen the issue on alpines too). Like this or you can take your radio apart and resolder the blown pico fuse if your good with small electronics. This should be a sticky! Great info for a common problem. Quote New build coming........ YouTube:http://www.youtube.c...6?feature=guide Old Build Log: http://www.stevemead...d-on-the-cheap/ Old Screen name: Redrebel66 Link to comment Share on other sites More sharing options...
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