Closed Thread
Results 1 to 11 of 11

Reload Thread: voltage drop

  1. #1
    mr.gaf's Avatar
    mr.gaf is offline Member



    Join Date
    Sep 2012
    Location
    Shreveport, LA
    Posts
    97
    Post Thanks / Like
    Mentioned
    0 Post(s)

    voltage drop

    I tested my battery with my truck off and it rests around but often below 12 volts, when the bass hits with my truck running the voltage at my amp drops to 8-9 volts, so it seems I need a new battery, am I correct?







  2. #2
    gckless's Avatar
    gckless is offline CarAudio.com Veteran



    Join Date
    Aug 2011
    Location
    San Antonio
    Posts
    4,106
    Post Thanks / Like
    Mentioned
    28 Post(s)

    Re: voltage drop

    I wouldn't say so just yet. Check your grounds at your amp. What's the voltage like up front when you are dipping that low in back?



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

  3. #3
    rebelfromva's Avatar
    rebelfromva is offline CarAudio.com Veteran



    Join Date
    Jun 2011
    Location
    VA
    Posts
    3,818
    Post Thanks / Like
    Mentioned
    96 Post(s)

    Re: voltage drop

    It's going to dip bc the truck is off?



    09 Cobalt LT
    Headunit -Alpine CDA-9887
    Front Stage - PHD FB 6.1 PRO SIX M/B, FB 5.1 m/b, FB 1.1b tweets
    Highs amp -Pheonix Gold Xenon 100.4 & 200.4
    Sub stage - 2 DC M2 LVL 5 12s
    Sub amp - 2 DC 5.0Ks
    Electrical - Singer 270 alt, big 3 0/1 & 12g ofc audio technix, 2 XS d3400s
    Deadener - 80 mill Audiotechnix deadener
    "Trunk hit hard like Kimbo Slice"
    TEAM DC AUDIO

  4. #4
    gckless's Avatar
    gckless is offline CarAudio.com Veteran



    Join Date
    Aug 2011
    Location
    San Antonio
    Posts
    4,106
    Post Thanks / Like
    Mentioned
    28 Post(s)

    Re: voltage drop

    Quote Originally Posted by rebelfromva View Post
    It's going to dip bc the truck is off?
    Reread the post. He says it's running.



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

  5. #5
    maylar's Avatar
    maylar is offline Electrical Weenie



    Join Date
    Jan 2002
    Location
    Connecticut
    Age
    62
    Posts
    3,418
    Post Thanks / Like
    Mentioned
    13 Post(s)

    Re: voltage drop

    Quote Originally Posted by gckless View Post
    I wouldn't say so just yet. Check your grounds at your amp. What's the voltage like up front when you are dipping that low in back?
    ^^^ This.



    dave
    ----------
    1999 Buick Park Ave Ultra
    Head Unit: JVC KWHDR720
    EQ: Audiocontrol EQL
    Front Stage: Hybrid Audio Technologies Imagine 5.25 mids, Morel Maximo tweets
    Sub Stage: Boston G3 10", 0.5 cu ft sealed
    Amp: PPI Phantom 900.4
    Rear Fill: Boston SE953 6X9's

  6. #6
    mr.gaf's Avatar
    mr.gaf is offline Member

    Threadstarter


    Join Date
    Sep 2012
    Location
    Shreveport, LA
    Posts
    97
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: voltage drop

    I checked the ground yesterday and it's fine, even with the truck off a 12v battery should still be over 12v with the truck off it's around 11.4




  7. #7
    Kangaroux's Avatar
    Kangaroux is offline I put on



    Join Date
    Dec 2010
    Location
    Maine
    Posts
    9,472
    Post Thanks / Like
    Mentioned
    81 Post(s)

    Re: voltage drop

    Quote Originally Posted by mr.gaf View Post
    I checked the ground yesterday and it's fine, even with the truck off a 12v battery should still be over 12v with the truck off it's around 11.4
    Give it a 2A trickle charge overnight




  8. #8
    mr.gaf's Avatar
    mr.gaf is offline Member

    Threadstarter


    Join Date
    Sep 2012
    Location
    Shreveport, LA
    Posts
    97
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: voltage drop

    Yea I thought I'd charge it some too, but if it has a dead cell it'll fall off again and I'll know it's the problem




  9. #9
    gckless's Avatar
    gckless is offline CarAudio.com Veteran



    Join Date
    Aug 2011
    Location
    San Antonio
    Posts
    4,106
    Post Thanks / Like
    Mentioned
    28 Post(s)

    Re: voltage drop

    Ok, what amp is this? Do you have stock alternator and battery? Resting at 11.4 isn't good, but dropping to 8-9V while running is a whole different story. I'm surprised you haven't toasted that amp tbh. What size wiring are you running? Need a bit more info here. It's possible you are simply drawing too much for your electrical. In the meantime charge the battery and see if it will hold a charge. Did this just start happening and it was fine before, or is this a new install?



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

  10. #10
    mr.gaf's Avatar
    mr.gaf is offline Member

    Threadstarter


    Join Date
    Sep 2012
    Location
    Shreveport, LA
    Posts
    97
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: voltage drop

    Audiopipe AP10001D, stock batt and alt, before I just had a Fusion 500 watt amp with 6 gauge wiring, now I have the Audiopipe 1000 watt amp running at 1 ohm with 0 gauge wiring. Before with the 500 watt amp it was fine, no problems but of course 500 watts doesn't demand much.




  11. #11
    Kingstroker's Avatar
    Kingstroker is offline Mr Dique



    Join Date
    Oct 2012
    Location
    Guthrie, OK
    Posts
    381
    Post Thanks / Like
    Images
    1
    Mentioned
    1 Post(s)

    Re: voltage drop

    go to one of you local chain auto parts stores and get a free battery and alternator check




Closed Thread

Similar Threads

  1. voltage drops
    By phazeone in forum Wiring, Electrical and Installation Help
    Replies: 31
    Last Post: 09-05-2004, 05:08 PM
  2. voltage drop question
    By superdooperman in forum General Discussion
    Replies: 5
    Last Post: 07-25-2004, 04:22 PM
  3. voltage drop = clipping?
    By Strecker25 in forum Amplifiers
    Replies: 0
    Last Post: 04-05-2004, 09:34 PM
  4. Bass hits, voltage drops, how much is ok
    By scottrc5391 in forum General Discussion
    Replies: 16
    Last Post: 01-25-2004, 06:25 PM
  5. Odd Voltage drop.
    By locomc in forum General Discussion
    Replies: 5
    Last Post: 04-29-2002, 10:36 PM

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts

1e2 Forum