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Thread: carputer on board soundcard

  1. #11
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    thank you very much for all your help scott, now one last question shouldnt i get a 4 channel pre amp? because the way my factory system is setup is as follows:

    two twitters on the top of the front doors
    two small speakers bottom front of the front doors
    two larger speakers bottom rear of the front doors
    two large speakers or as the factory refers to it as the woofers on the rear decklid

    all though i have all those speakers i only have 4 pairs of speaker wire which i'm assuming two pair is for the rear decklid woofers and the other two pairs are for the front ones, which each door that has 3 speakers is running off of one pair of speaker wires but somehow beyond my knowledeg the signal gets dividede between the 3 speakers on each door. which i think they may be using the 3 way system but with all speakers seperated instead of all in one. so for that setup what setting do you recomend, because my mother board's onboard sound card has a 5.1 channel and when i plug in the rca to 3.5mm convertors into the back of the motherboard my sround sound set up comes up. the mother board model is intel D525MW.

    Thanks alot for all your help scott.

  2. #12
    Variable Bitrate
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    Why don't you just replace the factory amp with an aftermarket amp that has a remote level control, or an adjustable input gain (almost every amp has this).. Running an amplifier into another amplifier will cause voltage issues and likely extreme noise. Your 300 watt amp (75x4) is MORE than enough on its own to run the speakers in your car. Get the factory amp out of the system and you will be much happier.

    ---------- Post added at 10:46 AM ---------- Previous post was at 10:45 AM ----------

    PM me the exact year and model of your car and an email address and I'll send you a wiring diagram for your factory stereo system, if you don't have one already from google.
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  3. #13
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    Quote Originally Posted by dscustoms View Post
    Why don't you just replace the factory amp with an aftermarket amp that has a remote level control, or an adjustable input gain (almost every amp has this).. Running an amplifier into another amplifier will cause voltage issues and likely extreme noise. Your 300 watt amp (75x4) is MORE than enough on its own to run the speakers in your car. Get the factory amp out of the system and you will be much happier.

    ---------- Post added at 10:46 AM ---------- Previous post was at 10:45 AM ----------

    PM me the exact year and model of your car and an email address and I'll send you a wiring diagram for your factory stereo system, if you don't have one already from google.
    i really dont want to change anything as far as my factory parts go. but thank you for the idea.

  4. #14
    MySQL Error scott_fx's Avatar
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    Quote Originally Posted by vipclk320 View Post
    thank you very much for all your help scott, now one last question shouldnt i get a 4 channel pre amp? because the way my factory system is setup is as follows:

    two twitters on the top of the front doors
    two small speakers bottom front of the front doors
    two larger speakers bottom rear of the front doors
    two large speakers or as the factory refers to it as the woofers on the rear decklid

    all though i have all those speakers i only have 4 pairs of speaker wire which i'm assuming two pair is for the rear decklid woofers and the other two pairs are for the front ones, which each door that has 3 speakers is running off of one pair of speaker wires but somehow beyond my knowledeg the signal gets dividede between the 3 speakers on each door. which i think they may be using the 3 way system but with all speakers seperated instead of all in one. so for that setup what setting do you recomend, because my mother board's onboard sound card has a 5.1 channel and when i plug in the rca to 3.5mm convertors into the back of the motherboard my sround sound set up comes up. the mother board model is intel D525MW.

    Thanks alot for all your help scott.
    it sounds as though you have some sort of processing going on after the amp. a passive crossover. if you have 4 sets of wires going into the amp then you'd want a 4 chan preamp. this is assuming that all of your speakers are being driven soley by that amp.

    Quote Originally Posted by dscustoms View Post
    Why don't you just replace the factory amp with an aftermarket amp that has a remote level control, or an adjustable input gain (almost every amp has this).. Running an amplifier into another amplifier will cause voltage issues and likely extreme noise. Your 300 watt amp (75x4) is MORE than enough on its own to run the speakers in your car. Get the factory amp out of the system and you will be much happier.

    ---------- Post added at 10:46 AM ---------- Previous post was at 10:45 AM ----------

    PM me the exact year and model of your car and an email address and I'll send you a wiring diagram for your factory stereo system, if you don't have one already from google.
    if he has bose he is more then likely dealing with 2 ohm or lower speakers. i think it'd be less of a pain to just integrate into the bose amps then to replace them
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  5. #15
    Car Audio Moderator durwood's Avatar
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    This is a case where maybe you would use a line driver since the OEM amp has no ability to adjust the input sensitivity. I would try without before buying first. If your carpc cannot reach the same volume as your OEM radio, then you would need one. I think the HD audio spec indicates a stronger signal than an IPOD, maybe 10x the output voltage so you might not need one. The question regarding 2 channel or 4 channel bose amp input connection can be answered easily since you tested this with an IPOD already, did 2 channel connection result in sound from all the speakers?

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