Connect with us

HELP! want to power an audio amp with batteries

Discussion in 'Audio' started by jarred2233, Nov 28, 2013.

Scroll to continue with content
  1. jarred2233

    jarred2233

    2
    0
    Nov 28, 2013
    I want to know if its possible to power a Muse i25W TA2021 audio amplifier with something like 12Vdc 18AH car battery to drive a pair of Polk Audio db401 speakers. Will the amp only draw the current required or will I have to regulate the power supply? and will the battery last long?
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    10,350
    2,255
    Nov 17, 2011
    The power adapter supplied with the Muse is 14V/4A.
    The amplifier may or may not work with 12V. You'll have to test this.
    The amplifier will draw as much current as it needs, you will not need a regulator for the current.
    A 4A fuse in the positive wire from the battery to the amplifier would be a useful safety feature.

    At 4A an 18Ah battery theoretically last max. 4.5hours. In practice the useful liefetime of a fully charged battery will depend on factors like
    - actual current consumption
    - real capacity of the battery (probably less than the nominal 18Ah)
    - temperature
     
    Last edited: Nov 28, 2013
  3. jarred2233

    jarred2233

    2
    0
    Nov 28, 2013
    I BELIEVE THE MUSE M20 WHICH SUPPLIES A BIT LESS POWER DRAWS BETWEEN 12-14 VDC SO I THINK THAT MIGHT BE SAFER THANKS FOR THE HELP
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-