Ignition noise in system

greg2350
greg2350 Posts: 544
edited March 2009 in Car Audio & Electronics
Ive had my system in my car for about 2 years 2 polk SR 12's C500.1, C400.4, db651's front, db691's back. Starting about 2 months ago ive noticed ignition noise you know that whine with the rpm's. I havent changed anything since I did the install. My IC's are running down the passenger side and the speaker wires are run down the driver side. Im using a scoshe install kit main power wire is run underneath the car. Amps are grounded to the frame in the back, amps are in the trunk. Any ideas on what could be causing this? Is it the ground on the head unit or the amps? ohh the car is a 1991 acura legend which uses coil packs. Any help is greatly appreciated its not that loud but enough to bother me. Up until about 2 months ago it was dead quite. :(
TV: Philips 42" LCD 1080p
Front Speakers: Polk Audio RT800i
Center Speaker: Polk Audio CS1
Surround Speakers: Polk Audio R50's powered of Denon AVR
Subwoofer: Polk Audio DSW pro500
AVR: Denon 3801
DVD Player: Denon DVM 745 upscale 1080p
Sat: Directtv HD 10
Front Speakers Amp: Rotel RB 890
Center Speaker amp: Rotel 970 BX
Post edited by greg2350 on
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Comments

  • joeparaski
    joeparaski Posts: 1,865
    edited March 2009
    Have you alternator checked....the diodes may be bad or going bad.

    Joe
    Amplifiers: 1-SAE Mark IV, 4-SAE 2400, 1-SAE 2500, 2-SAE 2600, 1-Buttkicker BKA 1000N w/2-tactile transducers. Sources: Sony BDP CX7000es, Sony CX300/CX400/CX450/CX455, SAE 8000 tuner, Akai 4000D R2R, Technics 1100A TT, Epson 8500UB with Carada 100". Speakers:Polk SDA SRS, 3.1TL, FXi5, FXi3, 2-SVS 20-29, Yamaha, SVS center sub. Power:2-Monster HTS3500, Furman M-8D & RR16 Plus. 2-SAE 4000 X-overs, SAE 5000a noise reduction, MSB Link DAC III, MSB Powerbase, Behringer 2496, Monarchy DIP 24/96.
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  • greg2350
    greg2350 Posts: 544
    edited March 2009
    Thanks for the response I didnt think it could could be the alternator, I havent had any problems from the alt lights dont dim. I was planning to upgrade the alternator anyways.
    TV: Philips 42" LCD 1080p
    Front Speakers: Polk Audio RT800i
    Center Speaker: Polk Audio CS1
    Surround Speakers: Polk Audio R50's powered of Denon AVR
    Subwoofer: Polk Audio DSW pro500
    AVR: Denon 3801
    DVD Player: Denon DVM 745 upscale 1080p
    Sat: Directtv HD 10
    Front Speakers Amp: Rotel RB 890
    Center Speaker amp: Rotel 970 BX
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  • joeparaski
    joeparaski Posts: 1,865
    edited March 2009
    It only a guess, and it won't hurt to check it anyways. The Alt. light doesn't always come on when there's a problem. Let me know what the results of the test are.

    Joe
    Amplifiers: 1-SAE Mark IV, 4-SAE 2400, 1-SAE 2500, 2-SAE 2600, 1-Buttkicker BKA 1000N w/2-tactile transducers. Sources: Sony BDP CX7000es, Sony CX300/CX400/CX450/CX455, SAE 8000 tuner, Akai 4000D R2R, Technics 1100A TT, Epson 8500UB with Carada 100". Speakers:Polk SDA SRS, 3.1TL, FXi5, FXi3, 2-SVS 20-29, Yamaha, SVS center sub. Power:2-Monster HTS3500, Furman M-8D & RR16 Plus. 2-SAE 4000 X-overs, SAE 5000a noise reduction, MSB Link DAC III, MSB Powerbase, Behringer 2496, Monarchy DIP 24/96.
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  • MacLeod
    MacLeod Posts: 14,358
    edited March 2009
    Doubt its the alternator.

    First thing to check would be the grounds for the amps. Make sure theyre still secure.

    It could also be one of the RCA's has a faulty ground in it.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • greg2350
    greg2350 Posts: 544
    edited March 2009
    Thanks mac was waiting for you to chime in I did check the grounds on the amps contacts are still clean and tight. I will go ahead and replace the RCA's instead of the alt its just a PITA 3 sets to the back. :(
    TV: Philips 42" LCD 1080p
    Front Speakers: Polk Audio RT800i
    Center Speaker: Polk Audio CS1
    Surround Speakers: Polk Audio R50's powered of Denon AVR
    Subwoofer: Polk Audio DSW pro500
    AVR: Denon 3801
    DVD Player: Denon DVM 745 upscale 1080p
    Sat: Directtv HD 10
    Front Speakers Amp: Rotel RB 890
    Center Speaker amp: Rotel 970 BX
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  • greg2350
    greg2350 Posts: 544
    edited March 2009
    Found the problem it was the rca's running channel 1&2 which drive the front door speakers. :)
    TV: Philips 42" LCD 1080p
    Front Speakers: Polk Audio RT800i
    Center Speaker: Polk Audio CS1
    Surround Speakers: Polk Audio R50's powered of Denon AVR
    Subwoofer: Polk Audio DSW pro500
    AVR: Denon 3801
    DVD Player: Denon DVM 745 upscale 1080p
    Sat: Directtv HD 10
    Front Speakers Amp: Rotel RB 890
    Center Speaker amp: Rotel 970 BX
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  • MacLeod
    MacLeod Posts: 14,358
    edited March 2009
    Yup, same thing happened to me. Had the same set of Streetwires RCA's in my car. First year they worked like a charm. Then the first show of last season I got docked 1 point for engine noise. I raised hell because I knew for a fact I didnt have any engine noise. Then I got in and listened and Ill be a sumbitch there is was. I looked and worked and checked for a couple days then decided to swap in my old JL Audio RCA's from my truck which looked funny as it was 18' and my current setup required 3'. But as soon as I swapped them in the noise was gone.

    Ive heard other people having the same problem with their Streetwires so Im using Tsunami currently.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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