Re: Stereo amplifier

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Stephen Conner by way of Terry Fritz <teslalist-at-qwest-dot-net>" <steve-at-scopeboy-dot-com>

At 19:52 06/03/03 -0700, you wrote:
>Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
>
>Hi Matt,
>
>Yes if the frequency response is really high.  However, it is really hard 
>on the amp and I have eventually blown all mine out trying.  You probably 
>want to use an amp you don't care about.

I measured bandwidth of stereo amps as part of a university project a while 
back. I also built my own hi-fi amp. I found that the regular kind of 
stereo amp starts to lose output about 80-90kHz because the transistors 
can't turn off quick enough and start to shoot through. They get hot as 
heck and then blow up. An amp with MOSFETs might work a bit better but I 
still think it's no substitute for a proper switched-mode driver circuit.

Steve C.