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  • Power AMP from CarPC

    Is anyone running one power feed to thier carPC and then powering touchscreen and amp from the carpc's psu ?

    I know you can power a lilliput from the carps psu, but Im thinking my M1 psu may not have the juice to power a small amp.
    2006 Honda Odyssey
    Lilliput 7inch touchscreen
    Travla C158 case
    VIA SP13000, 512mb ddr, 110Gb Hard Drive
    slot loading DVDROM/CDRW
    802.11B, Bluetooth, Wintvusb
    IG 3,01 NA
    Roadrunner
    A mile of wires and a ton of solder and a prayer or two.

  • #2
    Yeah, um...thats not gonna work.

    Comment


    • #3
      Can I do it if I upgrade to a bigger PSU , like the M2 ?
      2006 Honda Odyssey
      Lilliput 7inch touchscreen
      Travla C158 case
      VIA SP13000, 512mb ddr, 110Gb Hard Drive
      slot loading DVDROM/CDRW
      802.11B, Bluetooth, Wintvusb
      IG 3,01 NA
      Roadrunner
      A mile of wires and a ton of solder and a prayer or two.

      Comment


      • #4
        Why do you want to? If its in a car, it will be 100 times better to power it straight from the battery.

        Comment


        • #5
          Why would you want to? Amps suck a lot of juice. Way more than you would want to supply from a computer PS. Besides, they are made to work off unregulated power. They either have their own internal DC-DC PS or they are made to take however much voltage you supply. Because of this, many amps produce more than rated power since you are supplying 14.4 instead of 12V.
          My Work Thread:
          http://www.mp3car.com/vbulletin/showthread.php?t=72552
          Source switcher for Lill
          http://www.mp3car.com/vbulletin/show...d=1#post841007

          Comment


          • #6
            If your talking about powering your amp off a power supply:

            wtf would you put a power supply on an amp when an amp already has a power supply?


            If your talking about powering your amp off a regulator:

            wtf would you put a regulator on an amp when an amp is designed to work in the car environment?
            PostCount++


            - SrCsTc's Bezel
            - Alpine W200/H701
            - ED Nine.2X
            - OZ Matrix Elites
            - ED Nine.1
            - Idmax 12's

            Comment


            • #7
              Maybe we misunderstand you, do you mean you want to power your amp off your PSU, or do you mean you want use your PSUs built in SDC to turn your amp on and off. The first one is ridiculous but the second is fairly easy.

              Comment


              • #8
                Im talking about running the power from the battery, to the carpc and then running a line from the carpc to the amp. sounds straight forward to me, cept for the fact I may not have a big enough power supply in the carpc.

                I thought i'd seen someones schematic of this being done somewhere but cant find it anymore.
                2006 Honda Odyssey
                Lilliput 7inch touchscreen
                Travla C158 case
                VIA SP13000, 512mb ddr, 110Gb Hard Drive
                slot loading DVDROM/CDRW
                802.11B, Bluetooth, Wintvusb
                IG 3,01 NA
                Roadrunner
                A mile of wires and a ton of solder and a prayer or two.

                Comment


                • #9
                  I can see no point in doing that whatsoever. Just power your amp straight off the battery.

                  Comment


                  • #10
                    If powering a car audio amplifier off of a computer's power supply seems straight forward to you, than i'm sorry. At some point you have to stop and ask yourself, "What was i even thinking? From now on, i'm not going to think out loud".
                    PostCount++


                    - SrCsTc's Bezel
                    - Alpine W200/H701
                    - ED Nine.2X
                    - OZ Matrix Elites
                    - ED Nine.1
                    - Idmax 12's

                    Comment


                    • #11
                      okay. guess I cant do it then.
                      thanks for the info
                      2006 Honda Odyssey
                      Lilliput 7inch touchscreen
                      Travla C158 case
                      VIA SP13000, 512mb ddr, 110Gb Hard Drive
                      slot loading DVDROM/CDRW
                      802.11B, Bluetooth, Wintvusb
                      IG 3,01 NA
                      Roadrunner
                      A mile of wires and a ton of solder and a prayer or two.

                      Comment


                      • #12
                        We just don’t understand why you would want to. Amps have 3 wires for juice. +12V (always on), -12V (ground), +12 remote on/switched. The amp doesn’t turn on until it sees power on that third line.
                        My Work Thread:
                        http://www.mp3car.com/vbulletin/showthread.php?t=72552
                        Source switcher for Lill
                        http://www.mp3car.com/vbulletin/show...d=1#post841007

                        Comment


                        • #13
                          Can't you feel the love here?

                          Question, why not put a terminal block where the carPC gets the power source from the battery and run one wire to your PSU and one to the AMP? It is basiclly a Y split but you're not powering your amp off the carPC you're just running one power source to the AMP. You will also need to run the ground and the remote wire too but you run one power line.

                          Comment


                          • #14
                            You can use the acc/ign line from the carpc psu to trigger the amp to turn on, but since the amp has it's own power supply, you'll do more damage (if possible) than good by trying to supply regulated power to an amp that is expecting unregulated, full blown battery power. Just fuse the 12v coming from the battery to the amp just like you would from the battery to the carpc psu.
                            My Worklog

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