First amp build (power question)

Discussion in 'Shock Brother's DIY Amps' started by The Aram, Jul 8, 2009.

  1. The Aram

    The Aram TDPRI Member

    May 17, 2009
    Ann Arbor, MI
    I'm building a cigar box amp, a Little Gem, as found here:

    Now, I've got all the parts. I'm using a small 4-inch 8-ohm 8-watt speaker I salvaged out of an old set of RCA mini-speakers I had sitting around.

    What I'm wondering is if there's a way I could wire this so I had the option to use either a 9v battery or plug it into the wall via some kind of power brick. I've got a ton of power bricks around here and I know Radio Shack sells a variety of sizes of input jacks for them. Is this route even possible, and if it is, what kinds of extra components would I need to solder in to make it work? Would I need to wire in some form of switch mechanism to decide which power source would complete the circuit?

  2. Cap'n Kier

    Cap'n Kier TDPRI Member

    Jun 23, 2009
    Bristol, England
IMPORTANT: Treat everyone here with respect, no matter how difficult!
No sex, drug, political, religion or hate discussion permitted here.

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.