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Adding a second battery...maybe?

Discussion in 'GM Electrical Tech' started by Wage92, May 22, 2011.

  1. Wage92

    Wage92 New Member

    Hey all, recently ive been having a problem with my amp and sub in my truck. I installed them a few months ago and everything has been working fine, but lately its been acting weird. When i turn on my radio everything works and the amp is on and the sub is kicking, but at random times like in the middle of songs the sub will just stop, and then maybe start back up again...am i missing something really simple? the only thing i can think of is maybe the amp isnt getting enough air flow or something because its behind my back bench seat. Could it have anything to do with a battery? ive been thinking about adding a second one but i dont know how to do that, any help is appreciated thanks!
  2. TELORVEHC

    TELORVEHC Rockstar 4 Years 1000 Posts

    Is your amp going into protect mode at any point? Also, have you upgraded the Big 3 wires? That might help alleviate the issue.
  3. Enkeiavalanche

    Enkeiavalanche Rockstar 4 Years ROTM Winner 5000 Posts

    What kind of Amp and Sub? Is it the only aftermarket thing hooked up to the battery? How far is the ground from the amp?
  4. Wage92

    Wage92 New Member

    Yea sometimes it goes into protect mode...what does that mean? And how do I stop it?

    Its a 12" rockford sub with a 800w nitro amp. Currently its thhe only aftermarket thing hooked to the battery.
  5. TELORVEHC

    TELORVEHC Rockstar 4 Years 1000 Posts

    Check your ground wire and make sure it's connected to a clean, unpainted, metal part of the vehicle. (ex: a large bolt underneath the back seat).
  6. randomsandwhich

    randomsandwhich Rockstar 3 Years 100 Posts

    ^^^ ---> And as short as possible, ideally no longer then 1.5 feet.
  7. Wage92

    Wage92 New Member

    alright, ill check that out and maybe even shorten it. thanks guys, ill let ya know.
  8. Enkeiavalanche

    Enkeiavalanche Rockstar 4 Years ROTM Winner 5000 Posts

    What is the RMS of that amp? I would get the Sub checked. I bet it is not reading 4 ohms..That would put the amp in to protect too...
  9. lquattro04

    lquattro04 Rockstar

    definately make sure the ohms are matching up. and make sure your rms on the amp matches or is relatively close to the rms on the sub. its possible that your sub is trying to draw too much power from the amp if it cant put out enough, thus making it go into protect mode. Alos, be sure that all wires are connected securely as a loose power wire can do the same thing lol. What model subwoofer and amp do you have exactly?
  10. vncj96

    vncj96 Epic Member 5+ Years 1000 Posts

    Simply try turning the gain down on the sub, it could just be overheating the amp.

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