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Thread: Carputer wont power up once Amp is installed

  1. #1
    Newbie Legrath's Avatar
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    Unhappy Carputer wont power up once Amp is installed

    Hi,

    I've had my Carputer installed with a Opus 90w PSU (full spec in sig below) for about a week now, everything running fine, but with no sound as Amp was not yet installed.

    So today I install the 1400watt Amp. I wire it into the 8 Gauge Power wire and Earth that I have already installed for the Carputer. Now the Amp powers up fine, but the Carputer will no longer Power up. No lights nothing. I disconnect the Amp and the Carputer works fine again !?

    Both the Carputer and Amp are running of the same Power and Earth Cables. 8 gauge cable.

    Im confused

    Is the Power cable to weak for both the Amp and Carputer, is the Amp draining all the power ?

    300zx TT Manual
    - VoomPC Case, M1-atx PSU
    - VIA EPIA MII-12000
    - 60gb slimline, 512mb, DVD/CD
    - 3G/GPRS PCMCIA Data Card
    - USB GPS receiver
    - USB WinTV FM
    - 7" VGA Touch screen
    - Pioneer Steering remote
    - Creative Extigy USB Sound

  2. #2
    R@b
    R@b is offline
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    Buy another set of cables and a fuse and connect the carpc seperatly.

    Your cables are probably too thin and can't power on both.

  3. #3
    Newbie
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    How are you splitting the power wire? Distrubution block? or are you just daisy chaining the components?

  4. #4
    Zac
    Zac is offline
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    1400watts and a CarPC on an 8ga. wire? ......Run another 4ga line seperatly for the amp and you should be fine. "1400w 4 channel amp" eh? 350 watts x 4? No name brand listed either?

  5. #5
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    8ga wire is too weak to run something as power hungry as an amp and a computer. best bet would be to run fused 4ga wire from battery to trunk, install a fused 4ga-dual 8ga wire distribution block and run to each device respectively. Then take a 4ga ground wire and run to a ground distribution block and wire to the amp and puter. Most Ground Distribution blocks come with a 1 4ga to 4 8ga distribution. This should solve your problem. Also make sure that you main fuse on the 4ga wire is strong enough not to blow when u have the amp and the computer on

  6. #6
    Maximum Bitrate david69leonard's Avatar
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    Quote Originally Posted by Zac View Post
    1400watts and a CarPC on an 8ga. wire? ......Run another 4ga line seperatly for the amp and you should be fine. "1400w 4 channel amp" eh? 350 watts x 4? No name brand listed either?

  7. #7
    Low Bitrate ajscomp372's Avatar
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    Another reason for having the thicker wires is voltage drop. The thinner the wires, the greater the drop in voltage on the wire. If the wires are too thin and/or too long, the voltage could drop enough to trip the low-battery settings of your amp and computer, or at least cause some sort of small-scale electronics havoc.

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