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Thread: Amplifier Difficulties

  1. #1
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    Amplifier Difficulties

    I have a car computer that has been working like a champ until recently. When playing mp3s at any volume, the front speakers sound like they go to an attenuate mode (like if you were to press ATT on your head unit). The sub woofer on the other hand continues at its normal volume (it runs off its own amp and recieves the signal from the front speakers amp). I can remedy this problem for a short time by fiddling with the volume. At first I thought it was a software or computer hardware issue, but I tested the amp with multiple sources and the same symptoms happened. This problem is very erratic and hard to purposely duplicate. My question to you guys is, why would this be happening, and do I need a new amp. Obviously, this would be hard to diagnose without the proper information, so here goes:

    VIA V10000 Mini-ITX motherboard
    Sound Blaster Extigy

    Pioneer GM-X364 Amp
    JL Audio TR-400CXi Speakers

    Thanks in advance,

    Justin


    EDIT: Now keep in mind that I still have all the frequencies and such that normally play through the speakers, just at an incredibly lower volume.

  2. #2
    Maximum Bitrate osirisdon's Avatar
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    Maybe your amp is going into protection mode.

    Do those speakers match the ohms with the amp?
    Is the amp overheating?

  3. #3
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    The ohm loads are spot on and the amp does not get warm enough to worry about. That is why it is so stumping..

  4. #4
    Maximum Bitrate carabuser's Avatar
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    all i can say, check all the wiring, settings on your amp, everythink you can. Then, if nothing seems wrong try using some other setups. Maybe different speakers. If the problem doesn't disappear, take it to a shop where they could check it for you (it cost $25 to check mine).
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  5. #5
    Maximum Bitrate Snootch's Avatar
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    substitute the incoming signal from your carputer with a signal from another source (home system, cd player, etc.) If the problem is still there, then it is a problem with your sound system. Check your RCA connections at the amp, and check the cables, subsitute them with another set.

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