help!!!

shawnberry45
shawnberry45 Posts: 19
edited October 2008 in Car Audio & Electronics
guys i really need your help


i have the following:

sr6500 up front
pdx-4 100 amp
pdx-1 600 amp
sr124 sub
Alpine 7887 radio

when i first start the car, i get a discharge noise from the front driver speaker, sounds like power discharging, last about 2 mins then goes away, some times when i put the music up then turn it down the noise comes on then goes away after 2 seconds

i have my amps grounded to my cap, is it possible its that? i returned the pdx 4-100 three times, all three amps made this noise, what the heck could it be?
Post edited by shawnberry45 on
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Comments

  • MacLeod
    MacLeod Posts: 14,358
    edited October 2008
    Yup, there is a good chance its your ground. Ground your amps to the chassis.
    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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  • shawnberry45
    shawnberry45 Posts: 19
    edited October 2008
    everything is grounded to the chassis...still have the same exact noise

    anyone?
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  • exalted512
    exalted512 Posts: 10,735
    edited October 2008
    you need to check and make sure none of your RCAs and speakers wires are pinched/cut.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • shawnberry45
    shawnberry45 Posts: 19
    edited October 2008
    yea i thought of that..but wouldnt it make the noise all the time if it were that? not jsut the first 1-3 mins the car starts up?
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  • exalted512
    exalted512 Posts: 10,735
    edited October 2008
    Didnt catch that. Sounds like a faulty radio/amp.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • shawnberry45
    shawnberry45 Posts: 19
    edited October 2008
    well i replaced the speaker wire, and changed the rcas, and replaced the headunit...same noise....the amps been changed 4 times...should i try a different amp? all ive done is change from pdx to pdx...

    maybe i have bad polks up front? any one have issues with the sr6500?
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  • exalted512
    exalted512 Posts: 10,735
    edited October 2008
    Man, stuff like that is near impossible to diagnose over the internet. Even though its grounded to the chassis, you might want to move it somewhere else.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • Kinetic
    Kinetic Posts: 437
    edited October 2008
    shawnberry45 wrote: »
    guys i really need your help


    i have the following:

    sr6500 up front
    pdx-4 100 amp
    pdx-1 600 amp
    sr124 sub
    Alpine 7887 radio

    when i first start the car, i get a discharge noise from the front driver speaker, sounds like power discharging, last about 2 mins then goes away, some times when i put the music up then turn it down the noise comes on then goes away after 2 seconds

    i have my amps grounded to my cap, is it possible its that? i returned the pdx 4-100 three times, all three amps made this noise, what the heck could it be?


    same amp same problem

    i already buy a PDX 150, its suppossed to be here next week.
    the PDX 100 is going back to Alpine for a change
    Z
    /////Alpine CDA-9887 HU
    /////Alpine KTX-1000EQ
    /////Alpine PDX-4.150
    /////Alpine PDX-1.1000
    Polk Audio SR 6500
    Polk Audio SR 124 DVC
    KnuKonceptz MKS Kable

    G35
    /////Alpine CDA-9887 HU
    /////Alpine KTX-1000EQ
    /////Alpine PDX-4.150
    /////Alpine PDX-1.1000
    /////Alpine SPX 17PRO
    /////Alpine SWX 1243D
    KnuKonceptz MKS Kable
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  • Kinetic
    Kinetic Posts: 437
    edited October 2008
    the problem its suppossed to be on the grounds of the pre amp
    Z
    /////Alpine CDA-9887 HU
    /////Alpine KTX-1000EQ
    /////Alpine PDX-4.150
    /////Alpine PDX-1.1000
    Polk Audio SR 6500
    Polk Audio SR 124 DVC
    KnuKonceptz MKS Kable

    G35
    /////Alpine CDA-9887 HU
    /////Alpine KTX-1000EQ
    /////Alpine PDX-4.150
    /////Alpine PDX-1.1000
    /////Alpine SPX 17PRO
    /////Alpine SWX 1243D
    KnuKonceptz MKS Kable
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  • shawnberry45
    shawnberry45 Posts: 19
    edited October 2008
    damn i knew it was the amp!!! I just bought the JL slash 300/4 4 channel ..its comin on Monday. The hell with PDX! ill post my findings once the new amp is in. thank you so much for your post!
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  • shawnberry45
    shawnberry45 Posts: 19
    edited October 2008
    well after 3 alpine amps, tons of checking speakers, wire, changin headunits...i installed another brand amp....the JL Slash 300/4

    no issues at all!!! Screw Alpine amps and the PDX! Never again!

    Finally I have peace. Thank you everyone for your help!
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