Audio/Ultrasonic Amplifier (5kHz-50kHz)

Hi everyone.

I have some super-tweeters (Radioshack 40-1310B) that I'd like to drive using a PC for an ultrasonic application. In the past I've amped them through a Behringer Eurorack UB1204FX Audio mixer that provides a clean gain of +22dBu (giving about 9.5 Vrms output). But I'd like a little more power output. I'm also interested in instead driving some piezos.

Anyone have any recommended power amplifiers that are fairly flat up to 50kHz?

Alternately, is there a simple-design chip/circuit similar to the LM2876 but operable above 20kHz that can be used?

Thanks!

plarser48 said:

Alternately, is there a simple-design chip/circuit similar to the LM2876 but operable above 20kHz that can be used?

Click to expand...

Most IC power amps will do it, you normally add external components to reduce the frequency response.

Thanks for the quick response! Since I've never built an IC power amp to drive a speaker or piezo, I was wondering if you can provide a link to a reference circuit or even reference IC to start with that you would recommend?