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need more power to turn on amp

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  • need more power to turn on amp

    ok, this im problem, my m2-atx amp line doesn't seem to have enough power to switch my fosgate p4002 amp (for sub) on, it will however switch my old kenwood (forget name its 600W for my doors) on. when i run just a switched line to the sub that turns it on fine, so im wondering how i can use the M2 to turn the sub on, so it works rights.


    btw i think maybe i could use the power on line to control the switched 12V source but i don't know much about electronics and stuff, i do know how to solder and am willing to coble together a few caps/transisitors whatever it may take tho.

  • #2
    just get a relay and wire the m2-atx's amp turn on lead to that and then have that switch a constant power source
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    • #3
      Or, you could just run the remote from any switched 12v source in the car, the amp goes on w/ the key, most cases that is suffice.
      Its not the cards you're dealt, its how you play the hand!

      Originally posted by ryuandwings
      Where can I get a roll of tin foil?
      I been looking for that all over the net, but I can't find it.
      Please help.

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      • #4
        usually with a car computer you'll get a 'thump' if you wire it that way though.
        New System in progress:
        M10k
        Phaze TD1500 ~> Dynaudio MD130
        Phaze TD1500 ~> Seas g18rnx/p
        Zapco Ref 500.1 ~ 12" tc-9
        Behringer DCX2496 ~ Envision Electronics psu
        Transflective Xenarc

        My Car Pc Install
        My Boat Pc worklog

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        • #5
          then just get a delay circuit

          2006 Mazda 3
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          • #6
            Originally posted by Dennis5587 View Post
            then just get a delay circuit
            Or go down to Autozone and spend $5 on a relay.

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            • #7
              Originally posted by scott_fx View Post
              usually with a car computer you'll get a 'thump' if you wire it that way though.
              Doesn't cost anything to try it though...

              For me, I don't get a thump when I turn the computer on, I get the thump when Windows is in the middle of booting up. I assume it's the Audigy initializing. So the little delay offered by the m2 wouldn't really do anything.

              Doesn't matter though, I just remote start the carputer with my alarm remote, so it's already out of hibernation by the time I turn the key on, which is when the amps turn on.
              -ZtH01
              "It's my belief that my big balls should be held every night"

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              • #8
                I didn't get the thump either, I ran my computer like this for a small time.
                Its not the cards you're dealt, its how you play the hand!

                Originally posted by ryuandwings
                Where can I get a roll of tin foil?
                I been looking for that all over the net, but I can't find it.
                Please help.

                Comment


                • #9
                  Originally posted by J187 View Post
                  Or, you could just run the remote from any switched 12v source in the car, the amp goes on w/ the key, most cases that is suffice.
                  X2, i'm doing it, and no problem, this way you take the risk that your amps stay on, when you leave the car.
                  Design [000000000-]90%
                  Parts [000-------]30%
                  Installation[----------]0%
                  Integration[000-------]30%

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                  • #10
                    Originally posted by Jahntassa View Post
                    Or go down to Autozone and spend $5 on a relay.
                    lol... thank you
                    New System in progress:
                    M10k
                    Phaze TD1500 ~> Dynaudio MD130
                    Phaze TD1500 ~> Seas g18rnx/p
                    Zapco Ref 500.1 ~ 12" tc-9
                    Behringer DCX2496 ~ Envision Electronics psu
                    Transflective Xenarc

                    My Car Pc Install
                    My Boat Pc worklog

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                    • #11
                      Originally posted by scott_fx View Post
                      lol... thank you
                      We're not trying to be difficult. Just throwing out something to try that is very easy, and free. I don't know about other people's installls, but I already have a ton of relays in use, there's like six for my alarm alone. They're big and bulky, and if I can get away from using one, I will...
                      -ZtH01
                      "It's my belief that my big balls should be held every night"

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                      • #12
                        i think the person i quoted was refering to the delay circuit. sure, try the other way first and if it works, great.
                        New System in progress:
                        M10k
                        Phaze TD1500 ~> Dynaudio MD130
                        Phaze TD1500 ~> Seas g18rnx/p
                        Zapco Ref 500.1 ~ 12" tc-9
                        Behringer DCX2496 ~ Envision Electronics psu
                        Transflective Xenarc

                        My Car Pc Install
                        My Boat Pc worklog

                        Comment


                        • #13
                          Originally posted by scott_fx View Post
                          i think the person i quoted was refering to the delay circuit. sure, try the other way first and if it works, great.
                          Yup, exactly. I was referring to the 'just get a delay circuit'. Obviously the cheapest way is to hook your remote wire to the ACC of the car. If you don't get a thump, then you're golden.

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                          • #14
                            thanks, as i said im an electronics noob, this relay looks the best idea.

                            btw currently i am running the sub on a switched source howver whenever i run the computer into the sub i get the big thump wich i don't get from my doors. im currently just running the HU cause i don't have a monitor yet for the comp.

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                            • #15
                              Something seems a little off there.
                              Most amps require .5v or less for the "on" signal.
                              Check your setup.

                              The thump in the sub is a common problem. The only way I know of to deal with it is to delay the amp power on signal (however you chose to do it) until after windows has done it's thing.

                              Cheers

                              BJ

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