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Thread: Looking for help with car pc and subs

  1. #1
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    Looking for help with car pc and subs

    Ok I hvae a full micro atx pc in the back of my car with a mobo sound car with line in out and mic. I have a line in to A/V running mids tweets and split for subs. The problem is I cant section out the audio ie I dont want any bass to hit through my mids and tweets.

    I am in AZ and I am more then willing to pay for someones time who lives in Phoenix or Scottsdale etc to help me get my E46 where it needs to be from an audio stand point.

    Plz if yuo dont live here tell me what Im doing wrong. Atm I cant turn the subs up to even be noticeable bc the options on my pc and controlling the audio are not anything close to the controls you have on a deck

    Im guessing running it all through one line in plug is NOT the way to do it. THanks in advance.

    My email is [email protected] and my phone number is 480-250-9282 name is patrick and I would appreciate help more then you could know.

  2. #2
    Newbie
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    Jan 2006
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    Could you upgrade the sound card? My sound card has 3 outputs on it. It is a soundblaster Audigy

  3. #3
    Maximum Bitrate Naamanf's Avatar
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    You need a crossover, or an amp with built in crossover. What amp are you using?
    2007 Tahoe
    Opus with iBase 896 and Pentium M 735 Transflective Xenarc Alpine DVA-9861, PXA-H900, Sinfoni 45X2 (2) 90x2, Genesis Dual Mono, JL 1000/1 (2), Focal Be tweeters, ScanSpeak Revelator Mids, Dynaudio MW170, Dayton 12" Ref.

    My Install

  4. #4
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    Im useing a RF 2400 watt and i have two cross overs but it doesnt change the fact that my PC cannot seperate sub from treble. So when I turn the bass up or the sub up in CP it turns up the bass in the tweets and mids

  5. #5
    Maximum Bitrate Naamanf's Avatar
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    It sounds like you don't have your crossovers set right. What model crossover are you using? What model Rockford Fosgate amp? If you are using a crossover or an amp with crossovers you don't need a seperate sub output. The crossover will seperate the audio for you. If shouild be pretty simple to do if you let us know the exact equipment you are using.
    2007 Tahoe
    Opus with iBase 896 and Pentium M 735 Transflective Xenarc Alpine DVA-9861, PXA-H900, Sinfoni 45X2 (2) 90x2, Genesis Dual Mono, JL 1000/1 (2), Focal Be tweeters, ScanSpeak Revelator Mids, Dynaudio MW170, Dayton 12" Ref.

    My Install

  6. #6
    Low Bitrate
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    Ok here is my setup, I have a p4 3.2 micro atx case in my trunk and a 7 inch touch screen in the front. I have two amps in the trunk, ones a 2400 watt mono block, the other is a 4 channel alpine. The alping is running the mids and tweets up front, the RF is running the subs. I have it all hooked up useing the line in on my pc to a quad A/V jack running the amps. Im useing road runner as an inter-face. I dont have an equalizer or anything. I have two cross overs that I dont believe im useing. The problem is the subs barely hit, and when I mean barely I mean you cant really tell there on.

    Soo what I was thinking I needed to do was mount a deck in my trunk to control the audio and use the pc for track selection, storage and volume control

    There it is folks plz help me im a newb

  7. #7
    Variable Bitrate
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    upgrade to a surround sound card, or get a diffrent crossover. that is all I can tell you. Maybe try taking it to curcuit city or best buy, or the like. They would throw in a crossover for you, and charge you alot if you dont want to do it yourself.

    why not just use the control on the bottom right had corner? you can turn it up and down however you want.

    And with a surround sound card, you could individally tune your setup. You could change all the sound to all speakers.
    Progress,.... that is what I keep forgetting ;)
    planning_[++++++++++]. 110%
    parts___[++++++----] around 60%
    install___[-----------] -9,000%

  8. #8
    Maximum Bitrate Naamanf's Avatar
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    Okay I think I got what your doing. So you mean you are using the line OUT of the PC split and going to both amps? Now is the 4 channel alpine running the tweets on two channels and mids off the other two? Also you don't think your using the internal crossovers of the amp or external crossovers? Also are these crossovers you have active before the amp or passive after the amp to the speakers?

    Typically most amps internal crossovers don't have a crossover point that is good for tweeters and mids. Also are you running the low pass crossover on your amp? What freq is it at? What it sounds like is you don't have the crossovers on the amps set up right or at all. It really has nothing to do with your computer.
    2007 Tahoe
    Opus with iBase 896 and Pentium M 735 Transflective Xenarc Alpine DVA-9861, PXA-H900, Sinfoni 45X2 (2) 90x2, Genesis Dual Mono, JL 1000/1 (2), Focal Be tweeters, ScanSpeak Revelator Mids, Dynaudio MW170, Dayton 12" Ref.

    My Install

  9. #9
    FLAC
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    Falls Church, VA
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    904
    First things first, do a search on how to properly set the gains on your amplifier. Your gains are not properly set up.

    well can't you just use your gains as a way to equalize the bass? Turn down the gain on the full range amp until you have the bass that you are after.

    An electronic cross over is needed here. It would allow the subs to get frequencies below 120hz while providing the opposite to your full range speakers. You may want to look into one that has a bass control knob for easy access to your sub volume. A CROSSOVER WILL DO WHAT YOU'RE COMPUTER IS NOT DOING, SEPERATE THE BASS FROM THE MIDRANGE/TREBLE.

    To get back to your issue... I have noticed that sub-par sound cards seem to negate low end performance. I noticed a HUGE gain when i upgraded my SB sound cards. Keep in mind that MP3s generally have reduced low range frequencies.

    So... either get a better sound card (first choice) or get an electronic crossover with a bass control knob.

  10. #10
    Maximum Bitrate Naamanf's Avatar
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    I think it might work with what he has. Just needs to be set up right.
    2007 Tahoe
    Opus with iBase 896 and Pentium M 735 Transflective Xenarc Alpine DVA-9861, PXA-H900, Sinfoni 45X2 (2) 90x2, Genesis Dual Mono, JL 1000/1 (2), Focal Be tweeters, ScanSpeak Revelator Mids, Dynaudio MW170, Dayton 12" Ref.

    My Install

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