subwoofer help
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This is a discussion on subwoofer help within the Electronics/Car Audio forums, part of the Interior Mods category; i have 2 12" subs hooked up to a 700w amp.they sometimes cut out and when i check the trunk ...

  1. #1
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    subwoofer help

    i have 2 12" subs hooked up to a 700w amp.they sometimes cut out and when i check the trunk the red light on the amp is on and the amp is really hot.also the fuze in the amp blows when i turn them up alot.i have tried different amps but still cannot find the problem.i was thinking it was something with the grounding but i cannot figure it out.any suggestions?

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  3. #2
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    Turn the gain down, maybe you are over pushing it. Double checking your grounding. Maybe yoru sub box is moving around alot in the trunk causing the ground to come loose.
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    Registered User indytruckboy's Avatar
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    wrong impedance on the speakers?
    I work on vehicles that make 650hp and 2400ft/lbs.

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    Registered User vttk_mig69's Avatar
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    what is the brand of speaker and power of them?
    what brands and powers of amps are u using?

    i have 2 12'' MTX BlueThunders running on a Crunch 1400Watt amp with a 1.0 Farad Cap.
    (With No Problems)

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    the gain is down and the grounding seems to be working properly. i have 2 12" precision audio subs with a 700w kicker amp

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    Registered User vttk_mig69's Avatar
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    depending on what the watt rating is on the subs they may be a power hungey sub, and are trying to draw to much power from the amp witch will either overheat ur amp or trigger the speaker protection. Your 700watt amp isn't really 700 watts the true power of an amp or RMS is closer to half that like 350 or 400watts, then its split between the channels of the amp.

    thats why i dicided to get my amp witch over powers my subs but i don't have it turned all the way up so i have to heat issues and i would also invest in a Capacitor.
    (it helps with dash light fade and constant power to the amp)

  8. #7
    Registered User adizzle02's Avatar
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    Quote Originally Posted by indytruckboy View Post
    wrong impedance on the speakers?
    this is more of what i would be leaning to. i would double check how the subs are wired. I think your kicker amp is 2ohm stable. You might have the subs wired at a 1 ohm load which would put the amp into protection mode(red light on). If that doesnt fix it i would turn the gain down to about 3/4 or 1/2 and try that. A cap isnt necessary i run 2 15" Fosgates and a 1300w fosgate amp with no problems on the stock battery
    Last edited by adizzle02; 04-09-2009 at 07:06 AM.
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