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  1. #1
    UnderFire's Avatar
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    Pretty Stumped, need help

    Well, I was listening to music at very low volume this afternoon and the subwoofer just cut out and started thumping, just thumping like 3 times a second.

    Every time it thumps the Protect light flashes, and the goes back to normal.

    It had been installed for ~ a Month and hadn't had a single problem.

    Equipment:

    Pioneer DEH-1300MP
    JBL Bp1200.1
    DD 2512 @ 1 ohm

    I Have tried the following:

    The sub plays just fine when I use a rca cable with a headphone jack directly to my phone.

    I tried running a different set of RCA's directly to the amp for the HU, same thing happens

    I swapped the HU with a spare Clarion DB365UB, same thing, also tried the other rca's with this headunit.



    97 4runner, 3RZ, 5 Speed

    Headunit: Alpine CDA-9887
    Mids: CDT HD-6CF
    Tweets: CDT DRT-25
    Fronts Amp: Hertz HDP4
    Sub Amp: American Bass VFL150.1
    Substage: 18" SSA ZCON
    Electrical: 160 Amp Alt, Duralast Gold, C&D270FR, 2/0 Throughout




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    Re: Pretty Stumped, need help

    check ground continuity and voltage




    pioneer avhx 5500 dvd, gzpa 1.4000 x 2
    ab vfl 350.4 ,7 pc 2150 and a 150 ah power ware agm ,275 amp singer alt , 2nd one coming soon
    cdt 6.5 es 6 im mids,cdt es 010 tweets,es 02 mids ,mx1000 3 way x overs , sky high and stinger hpm o gauge wires ,also 2 tantric hdd 15's in a 9.5. ^3 ported no wall box 11.5 octo port.
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    Re: Pretty Stumped, need help

    try a different amp it sounds like it may be the culprit.



    electrical: Optima yellow top X 2 big 3 in monster OFC 1/0g high output alt by maniac electrics
    HU: JVC AVX-77 touch screen
    Front stage: RE XXX 6.5" comps
    front stage amp: Rockford T600.2
    subs: 1 Sundown ZV4 12"
    sub amp: Rockford T2500.1BDCP
    Enclosure: ported (by JayDubb757 )

  4. #4
    VWGolfMKVI's Avatar
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    Re: Pretty Stumped, need help

    Had this same problem with one of my old Phoenix Gold amps. Sounds like the amp is the culprit




  5. #5
    UnderFire's Avatar
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    Re: Pretty Stumped, need help

    Quote Originally Posted by goingdef View Post
    try a different amp it sounds like it may be the culprit.
    Any clue why using the direct RCA's would make it play fine?



    97 4runner, 3RZ, 5 Speed

    Headunit: Alpine CDA-9887
    Mids: CDT HD-6CF
    Tweets: CDT DRT-25
    Fronts Amp: Hertz HDP4
    Sub Amp: American Bass VFL150.1
    Substage: 18" SSA ZCON
    Electrical: 160 Amp Alt, Duralast Gold, C&D270FR, 2/0 Throughout

  6. #6
    goingdef's Avatar
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    Re: Pretty Stumped, need help

    Quote Originally Posted by UnderFire View Post
    Any clue why using the direct RCA's would make it play fine?
    well I was just guessing that the output of the HU is more then what a ipod would put out and that may be causing it to go into protect, but I was just guessing some problems are hard to solve when your not looking at them with the possibility's that ca offers.



    electrical: Optima yellow top X 2 big 3 in monster OFC 1/0g high output alt by maniac electrics
    HU: JVC AVX-77 touch screen
    Front stage: RE XXX 6.5" comps
    front stage amp: Rockford T600.2
    subs: 1 Sundown ZV4 12"
    sub amp: Rockford T2500.1BDCP
    Enclosure: ported (by JayDubb757 )

  7. #7
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    Re: Pretty Stumped, need help

    Quote Originally Posted by mylows10 View Post
    check ground continuity and voltage
    13.8 @ the amp, that's all I can get, don't have a DMM.



    97 4runner, 3RZ, 5 Speed

    Headunit: Alpine CDA-9887
    Mids: CDT HD-6CF
    Tweets: CDT DRT-25
    Fronts Amp: Hertz HDP4
    Sub Amp: American Bass VFL150.1
    Substage: 18" SSA ZCON
    Electrical: 160 Amp Alt, Duralast Gold, C&D270FR, 2/0 Throughout

  8. #8
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    Re: Pretty Stumped, need help

    you should get one. may just be a bad ground




    pioneer avhx 5500 dvd, gzpa 1.4000 x 2
    ab vfl 350.4 ,7 pc 2150 and a 150 ah power ware agm ,275 amp singer alt , 2nd one coming soon
    cdt 6.5 es 6 im mids,cdt es 010 tweets,es 02 mids ,mx1000 3 way x overs , sky high and stinger hpm o gauge wires ,also 2 tantric hdd 15's in a 9.5. ^3 ported no wall box 11.5 octo port.
    NOR CAL DB DRAG JUDGE
    http://www.dcsoundlab.com

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    Re: Pretty Stumped, need help

    Quote Originally Posted by mylows10 View Post
    you should get one. may just be a bad ground
    Alright, I don't think I'll be able to get a better ground, It's ~3ft straight to the frame with 4ga. but I'll pick up a DMM and see what it is.



    97 4runner, 3RZ, 5 Speed

    Headunit: Alpine CDA-9887
    Mids: CDT HD-6CF
    Tweets: CDT DRT-25
    Fronts Amp: Hertz HDP4
    Sub Amp: American Bass VFL150.1
    Substage: 18" SSA ZCON
    Electrical: 160 Amp Alt, Duralast Gold, C&D270FR, 2/0 Throughout

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    Re: Pretty Stumped, need help

    always check the easy stuff first. 9/10 its wiring tho




    pioneer avhx 5500 dvd, gzpa 1.4000 x 2
    ab vfl 350.4 ,7 pc 2150 and a 150 ah power ware agm ,275 amp singer alt , 2nd one coming soon
    cdt 6.5 es 6 im mids,cdt es 010 tweets,es 02 mids ,mx1000 3 way x overs , sky high and stinger hpm o gauge wires ,also 2 tantric hdd 15's in a 9.5. ^3 ported no wall box 11.5 octo port.
    NOR CAL DB DRAG JUDGE
    http://www.dcsoundlab.com

  11. #11
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    Re: Pretty Stumped, need help

    better ground= wire ran directly to battery



    1991 dodge ram 2500 standard cab
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    Re: Pretty Stumped, need help





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    Re: Pretty Stumped, need help

    It's the deck....it is the only thing you changed in the equation.



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    Re: Pretty Stumped, need help

    uh oh sounds the "heart beat". last time i had the problem the amp sh1t......



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    Re: Pretty Stumped, need help

    Quote Originally Posted by CHEMMINS View Post
    It's the deck....it is the only thing you changed in the equation.
    I changed the deck because I thought that was it being a cheap junker, but it still did it. Decided to just do my Un-install a couple weeks early since I'm going to start working on new projects.



    97 4runner, 3RZ, 5 Speed

    Headunit: Alpine CDA-9887
    Mids: CDT HD-6CF
    Tweets: CDT DRT-25
    Fronts Amp: Hertz HDP4
    Sub Amp: American Bass VFL150.1
    Substage: 18" SSA ZCON
    Electrical: 160 Amp Alt, Duralast Gold, C&D270FR, 2/0 Throughout

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