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Thread: PC -> Amp and HU - Amp question

  1. #1
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    PC -> Amp and HU -> Amp! Is this possible ?

    Is it possible to buy/make a RCA split so I can have both HU and PC connected to my 1 channel amp at the same time ?

    Just one will give sound signals to the amp at the time so I cant understand why this wouldnt be possible? Or ?

    I really cant afford to buy a new HU that have Aux in or to buy a new amp.
    My original plan was to connect the HU to line-in on my computer but there is too much static noice on my line-in
    Dont know why though, I am using the newest drivers for my MII 1000 mini itx card.

  2. #2
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    Quote Originally Posted by Nokia6600
    Is it possible to buy/make a RCA split so I can have both HU and PC connected to my 1 channel amp at the same time ?

    Just one will give sound signals to the amp at the time so I cant understand why this wouldnt be possible? Or ?

    I really cant afford to buy a new HU that have Aux in or to buy a new amp.
    My original plan was to connect the HU to line-in on my computer but there is too much static noice on my line-in
    Dont know why though, I am using the newest drivers for my MII 1000 mini itx card.
    I would suspect that you have alternator whine and probably ignition noises being picked up.

    These problems are because of ground loops being created when you connect your head unit to your computer setup.

    THese can be fixed, the quickest way is with a ground loop isolator (Transformer) see the following link:
    http://www.partsexpress.com/pe/showd...number=265-012

    Not the best quality, but it is a quick way to solve a problem.

    The best way to solve your problem it to modify the ground on your head unit, computer-power supply so that they will be grounded at the same ground point and make sure that all your ground points are clean and making good contact. The same goes for your amplifier, verify its ground connection to the chassis of your car.

    The next problem you might encounter is the ground from the Antenna, there again, check the ground connection.

    As a rule of thumb, the more units (Hu, processor, car computer, amplifier) you put in a car sound system, the more chances of getting ground loops and noise. Those can be solved but you need to be patient.

    regards

    frenchnew

  3. #3
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    Quote Originally Posted by frenchnew
    I would suspect that you have alternator whine and probably ignition noises being picked up.

    These problems are because of ground loops being created when you connect your head unit to your computer setup.

    THese can be fixed, the quickest way is with a ground loop isolator (Transformer) see the following link:
    http://www.partsexpress.com/pe/showd...number=265-012

    Not the best quality, but it is a quick way to solve a problem.

    The best way to solve your problem it to modify the ground on your head unit, computer-power supply so that they will be grounded at the same ground point and make sure that all your ground points are clean and making good contact. The same goes for your amplifier, verify its ground connection to the chassis of your car.

    The next problem you might encounter is the ground from the Antenna, there again, check the ground connection.

    As a rule of thumb, the more units (Hu, processor, car computer, amplifier) you put in a car sound system, the more chances of getting ground loops and noise. Those can be solved but you need to be patient.

    regards

    frenchnew
    I found the problem, it was my D-Link card that made the static noice. When i disable the card the sound is okay.. No noice.

    But do you think I can use a RCA split on the AMP so I can have my HU and computer connected to the amp at the sime time ?

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