> ----- Original Message -----
> From: "Herbert Graf" <mailinglist@FARCITE.NET>
>
> >         What kind of power are you looking for. Is power usage
> a problem?
> A Type A
> > amp find fit the bill, it's about as simple as they get. TTYL
>
> Well, I'm not sure specifically... depends on what volume I
> decide on... In
> any case, less than 1 Amp, 5-12V. I'm not very familiar with amp circuits,
> but the Type A amp requires PNP's doesn't it? Thanks!

        Nope, I was thinking of a common emitter type config, resistor to the
positive rail, other end to the collector, the emitter connected to ground
and you input connected to the base, through a resistor. Speaker connected
to the collector, preferable through a cap to prevent DC flow through the
speaker and ensure correct biasing. Dead simple circuit, not very powerful
though (in practical terms), VERY wasteful in power, but it works. Quite
tolerable if you're just going to feed it square waves. TTYL

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