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Thread: Rear power for small active sub?

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    Default Rear power for small active sub?

    Looking at one of these:
    http://www.justkenwood.co.uk/speakers01/kscsw10.asp

    Thinking if I could tap into the power in the boot somewhere, it would save me having to pull power cables through from the front. Estates have a 10A power connector in the boot - is it possible to retrofit that on the hatch and use that for running the sub? I only need 8A to run the sub.

    Suggestions?

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    Regular Member Danwells72's Avatar
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    Vehicle : Vectra

    Trim : Sri

    Engine : 1.9 cdti 150

    Year : 2004

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    No dont, you need a direct link to the battery

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    For 10A? Really? Is that NEED or PREFERRED?

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    Regular Member JuzzyD's Avatar
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    Quote Originally Posted by _ZS_ View Post
    For 10A? Really? Is that NEED or PREFERRED?
    I would say need - expensive mistake if it all goes wrong.

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    Regular Member parapaul's Avatar
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    Just look at the size of the power cables in the boot looms compared to even the smallest gauge power cable you would use for an amp (about 8AWG) - they're tiny.

    It's not that big a job, especially if you're not trying to run RCA cables as well. I'd say it would probably only take an hour tops.

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    Surely the 30amp connection in the rear module would do?

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    My point exactly, Hs2300. It's only a little 100W sub - I'm not entering any soundoffs.

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    Regular Member Danwells72's Avatar
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    Vehicle : Vectra

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    No you cant as the sub will be pulling more current than the connection is supposed to which could, in an extreme event but possible, cause a fire. you need to run a wire directly to your battery as the battery will be able to supply the amp with enough current and the wiring will be able to handle it

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    How can it? 10A outlet, 10A fuse on the sub, 8A current draw. Where's the extra current draw going to come from?

    I'm not trying to be difficult here, I'm just not seeing any reason why I would need to pull huge power cables from the battery for a small sub like that.

  10. #10
    Regular Member Danwells72's Avatar
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    You dont need a huge power cable, i would assume a 12awg cable would be enough. its all about voltage, current and resistance. I dont know the exact details but i know enough not to try wire it up to any outlet within the car only directly with the battery, you also have to consider the other components being run from the connection, running it direct from the battery offer the least resistance, most power and is solely being used by the sub on that cable.

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