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Thread: XMDirect powered directly from car's battery?

  1. #1
    Join Date
    Apr 2005
    Smoke stacks and factories

    XMDirect powered directly from car's battery?

    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
    Join Date
    May 2005
    Conyers, GA
    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 is offline
    Low Bitrate JAC's Avatar
    Join Date
    May 2006
    North of NY
    you can stick it right to your car bat

  4. #4
    Join Date
    Apr 2005
    Smoke stacks and factories
    this is the one i'm talking about

    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
    Join Date
    Feb 2004
    Omaha, NE
    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%

  6. #6
    Constant Bitrate
    Join Date
    Apr 2005
    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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