Help making a simple audio amp

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  • evilkitty
    Badcaps Veteran
    • Nov 2017
    • 299
    • USA
    #1

    Help making a simple audio amp

    I have a pair of old JBL 145SSAT Speakers
    I made a cable to use them with a 3.5mm jack
    I have it hooked to a low profile dell pc
    I think it needs more amperage to preform optimally
    How can i use a USB port to get more power to it?

    I have some 2n2222a, 2n3906 and tip120 (NPN Darlington) transistors to work with as well as some diodes and resistors
    I also have a few caps i can use to smooth out any supply fluxions

    I am not trying to make a external volume control, just something so i can use the computers volume control to adjust it, i just want enough juice to drive the speakers properly
    Last edited by evilkitty; 02-28-2018, 05:47 PM.
    Tags: None
    • madan1
      Badcaps Veteran
      • Nov 2016
      • 682
      • Bulgaria
      #2
      Re: Help making a simple audio amp

      Get one of those http://www.dx.com/p/pam8403-dc-5v-cl...e-green-347324

        Comment

        • evilkitty
          Badcaps Veteran
          • Nov 2017
          • 299
          • USA
          #3
          Re: Help making a simple audio amp

          Thanks, i'll give one of those a try

            Comment

            • evilkitty
              Badcaps Veteran
              • Nov 2017
              • 299
              • USA
              #4
              Re: Help making a simple audio amp

              This worked out great, though that is only when using some SFF dell box, when i hook it up to a decent desktop i get a lot of static and noise from doing anything like moving the mouse or dragging windows around, any good way to solve that or should i just use a filtered power adapter instead of the system's USB ports

                Comment

                • madan1
                  Badcaps Veteran
                  • Nov 2016
                  • 682
                  • Bulgaria
                  #5
                  Re: Help making a simple audio amp

                  Originally posted by evilkitty
                  This worked out great, though that is only when using some SFF dell box, when i hook it up to a decent desktop i get a lot of static and noise from doing anything like moving the mouse or dragging windows around, any good way to solve that or should i just use a filtered power adapter instead of the system's USB ports
                  get a dedicated sound card or an external usb sound card

                    Comment

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