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Maxima build, need help with audio

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  • Maxima build, need help with audio

    Alright, so I have a Shuttle KPC K45, built and already getting power via OPUS 150W XPC PSU. The system runs great, and I'm getting great signal to my 7" Touchscreen, but no sound.

    This is my setup
    Computer: Onboard (Realtek ALC662) 5.1 (three jacks on rear)
    - The front and rear jacks have 3.5mm to RCA adapters
    - RCA adapters to 15ft RCA cables running along side of car
    - Cables to Metra 70-7551 harness
    - This harness is designed for the BOSE headunits that do not provide an amplified signal, since the speakers have separate amps.

    My issue: I cant get the audio to switch from L-IN/Mic/etc.. to F/R/Center.
    I connected the wires, and I get no signal. The computer detects them in the Realtek HD Audio software, but I have no method of switching them (I can tell they are not activated by the Volume Control as they are dimmed out for the F/R/Center).

    I've originally used an Eclipse headunit and the harness / speakers / etc work, but I can't get the signal from the computer to communicate with the harness. Help.
    2002 Maxima SE 6-Speed
    Shuttle K45 + Core2Duo / OPUS 150 / Lilliput 701 + BYBYTE casing / Factory BOSE integration

    http://www.cardomain.com/ride/2285382

  • #2
    i believe the signal from the pc maybe too weak for the bose system to amplify it.
    im not sure. I have a maxima but i dont have the bose system. Im going completely carpc...just using regular car amps... try using headphones to see if you are getting audio out.

    im not sure...good luck to you.
    CarPc
    Project "Driver"

    Planning [99.9%]

    Parts Collected [98.5%]

    Installation & Fabrication [98%]

    Total Completion Level [96.9 %]

    http://www.mp3car.com/vbulletin/work...ct-driver.html

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    • #3
      as chris350 pointed out connect regulat headphones to ur PC and see if u geting any sound at all, use Realteck driver to generate test sound for each channel in thta what u know there should be sound. If no luck then reinstall driver and or chack that your Wave Out is enables and not muted
      Acura / Honda A/V CarPC Adapter GA-NET+
      Centrafuse Garmin Mobile PC Skin - GMPC Rebellium Skin
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      • #4
        Okay, so I figured out the issue here:

        The amps/speakers need the remote turn-on active. Basically, I kept my headunit plugged into to the harness, and the RCAs from the car to the PC. When the headunit was on, sound was coming from the carPC. When off, no sound.

        I need to have the remote wire from the harness activated by the PC. How can I do this? Can I tap into the OPUS 150 rails?
        2002 Maxima SE 6-Speed
        Shuttle K45 + Core2Duo / OPUS 150 / Lilliput 701 + BYBYTE casing / Factory BOSE integration

        http://www.cardomain.com/ride/2285382

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        • #5
          Blue wire on JU1 on the Opus DCA7-150 is the remote power on wire that should go to the amp to tell it to turn on.
          RodW
          2007 Toyota Hilux with a CarPC..

          Worklog: http://www.mp3car.com/vbulletin/work...ota-hilux.html
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          • #6
            I have the DCX2.1215.XPC
            2002 Maxima SE 6-Speed
            Shuttle K45 + Core2Duo / OPUS 150 / Lilliput 701 + BYBYTE casing / Factory BOSE integration

            http://www.cardomain.com/ride/2285382

            Comment


            • #7
              Mate you can use any 12 volt source to turn on the amp. (its a blue wire on your harness more than likely). The Amp On from your power supply just delays the turn on till after the sound card has acitvated, thereby eliminating the PC soundcard turn-on 'clunk'.

              I have a Nissan Murano, and use the standard Bose amp in a similar way to you, and during testing I just hooked 12v directly to the amp turn on wire (after going through the wiring diagrams!!).

              Good luck!

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              • #8
                Originally posted by TriTon View Post
                Mate you can use any 12 volt source to turn on the amp. (its a blue wire on your harness more than likely). The Amp On from your power supply just delays the turn on till after the sound card has acitvated, thereby eliminating the PC soundcard turn-on 'clunk'.

                I have a Nissan Murano, and use the standard Bose amp in a similar way to you, and during testing I just hooked 12v directly to the amp turn on wire (after going through the wiring diagrams!!).

                Good luck!
                Thank you!

                This is what I needed. I will report back my testings. I plan to run a wire from one of the molex rails from the PSU. I don't want the clunk, but I can tweak it later to either a switch or something else later. I want to have it up and running.
                2002 Maxima SE 6-Speed
                Shuttle K45 + Core2Duo / OPUS 150 / Lilliput 701 + BYBYTE casing / Factory BOSE integration

                http://www.cardomain.com/ride/2285382

                Comment


                • #9
                  Thank you guys, for all of your help. I tapped into one of the 12v molex rails (yellow) and ran it down to the remote wire (blue w/ white lines) on my Metra harness. Works like a champ.
                  2002 Maxima SE 6-Speed
                  Shuttle K45 + Core2Duo / OPUS 150 / Lilliput 701 + BYBYTE casing / Factory BOSE integration

                  http://www.cardomain.com/ride/2285382

                  Comment

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