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Thread: AMP powering question

  1. #1
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    AMP powering question

    Hey All,

    I'm new to the car audio work and have a question about powering my amp.

    I am installing a touchscreen carpc in my dash and then want to run music off the computer and output to the amp which will then send it to my speakers in the car. Since I don't have a head-unit I am not sure how to get the amp working so that it turns off/on with the car. Can I run a remote turn on lead to a different connection in the car such as the lights or other connection that turns on with the car? Or should I put a switch in on the Amp Power cable.

    Any help is appreciated. Thank you!

    Shane

  2. #2
    MySQL Error soundman98's Avatar
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    yes, i typically recommend to connect to the acc wire that turned the radio on/off in the radio harness, as that is usually very well documented, and easier to find then other locations.

  3. #3
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    Quote Originally Posted by shaner3721 View Post
    Hey All,

    I'm new to the car audio work and have a question about powering my amp.

    I am installing a touchscreen carpc in my dash and then want to run music off the computer and output to the amp which will then send it to my speakers in the car. Since I don't have a head-unit I am not sure how to get the amp working so that it turns off/on with the car. Can I run a remote turn on lead to a different connection in the car such as the lights or other connection that turns on with the car? Or should I put a switch in on the Amp Power cable.

    Any help is appreciated. Thank you!

    Shane
    if you get something like the m2-atx power supply it has the remote amp turn on you can use to power your amp i would use that over a 12v source from the car

  4. #4
    MySQL Error soundman98's Avatar
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    depends on your perspective-- if the m2 doesn't power on, neither do the amps..

    and there is also the minor issue where some amps cannot be powered directly off the m2-- it requires a boost circuit using a transistor.

    though the main reason to use the m2 turn on is if you have issues with the pc poping your speakers while the pc boots. connecting to the m2 turn on will delay the amps from turning on for a specific amount of time, designed to bypass the time that the 'pop' would occur.

    for that reason, i recommend trying to wire the amps normally, and then worry about the 'pop' if you have a problem later...

  5. #5
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    ive used the m2 for over 2 years now with no issue, if your power supply isnt turning on to power your PC then it doesnt matter if your amps turn on my m2 turns on both of my rockford amps fine

  6. #6
    MySQL Error soundman98's Avatar
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    yes it does-- i have a aux input the directly feeds my amps for when my carpc doesn't turn on, or someone wants to use a mp3 player in the car-- that way, i don't need the carpc to be on..

  7. #7
    Variable Bitrate djvillar's Avatar
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    The DS-ATX is the same way. You need an add-on booster module. But really, there's no need. Just use the 12v rail (yellow) from the power supply. It doesn't fully power on till the computer boots so,.. no pop and its powers off clean too.

  8. #8
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    anyways my point was to NOT use a 12v source from the car lol

  9. #9
    Variable Bitrate djvillar's Avatar
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    The 12v in my scenario comes from unit you'd use to power the carpc... How are you going to run an amp or a carpc without using 12v from the car at some point in the carpc setup?

    You going Solar? (kidding).. How do you plan on powering the pc?

  10. #10
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    getting 12v to npower in dash pc

    Quote Originally Posted by shaner3721 View Post
    Hey All,

    I'm new to the car audio work and have a question about powering my amp.

    I am installing a touchscreen carpc in my dash and then want to run music off the computer and output to the amp which will then send it to my speakers in the car. Since I don't have a head-unit I am not sure how to get the amp working so that it turns off/on with the car. Can I run a remote turn on lead to a different connection in the car such as the lights or other connection that turns on with the car? Or should I put a switch in on the Amp Power cable.

    Any help is appreciated. Thank you!

    Shane
    you can use the ignition wires also but, the unit will only power up with the key forward...

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