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Thread: XMDirect powered directly from car's battery?

  1. #1
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    XMDirect powered directly from car's battery?

    Ok,
    I'm trying to figure out if XMDirect unit needs regulated power or not, I would like to wire it to my car's power but I know this would require that the unit would have a power regulator inside, which I'm not sure if it does. These units are deisgned to be used in cars so I assumed they should have built-in regulators, but do they? Or is the regulator inside a cable you buy for your headunit? So if you have a pioneer headunit and you were to get a pioneer xmdirect cable that cable would have the power regulator inside?

    Anyways, can this thing be powered directly from an unregulated car's power source or it needs a power regulator? If you know, please answer asap as I'm outside today installing this carputer, this never lasting project that I've been doing for past 2 years.

    P.S: I've searched for over 40 minutes and didn't find anything.

  2. #2
    FLAC Jahntassa's Avatar
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    If you're talking about the XM Direct unit meaning the small square box with the XM symbol on it, then it's designed to go in a car. It wasn't meant for 'in-home use'.

    If you're using a timetrax interface box, that I don't know.

  3. #3
    JAC
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    Low Bitrate JAC's Avatar
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    you can stick it right to your car bat

  4. #4
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    this is the one i'm talking about
    http://www.bhphotovideo.com/bnh/cont...ist&sku=389901

    Does it require regulated power or not? I found some thread that said it does require regulated power and to power it of the computer's PSU.

  5. #5
    Maximum Bitrate sfay93's Avatar
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    Unregulated car voltage is fine with that unit. It was built to be installed in a car.
    7" Lilli TS, Soyo K7VME, Semperon 2200, 160GB Maxtor, 512mb PC3200, Deluo GPS, Panasonic Slim DVD/CD RW, Linksys WMP545G , Opus 150w, XMDirect, XP Pro, FP, IG [XXXXXXXXX-] 90%
    ATVMS.com

  6. #6
    Constant Bitrate
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    Be sure to ground the case. I had a alternator whine that I couldn't get rid of using 2 power line noise filters and a ground loop isolator. I finally figured out it was the direct unit feeding the noise through the line in. Once I gounded the case the noise went away.
    Car-mada-puter Epia MII12000, 40gig HD, 512mb ram, Morex 3688 case, M1-atx and XP Pro.

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