Subject: Re: Ultrasound playback setup From: Geoffrey Martin <GGM(at)BANG-OLUFSEN.DK> Date: Mon, 10 Feb 2003 15:39:20 +0100> I would be happy to get some suggestions for ultrasound (rat range, i.e. up to about 70-80 kHz) computer playback setup: D/A (soundcard), amplifier, loudspeaker. http://www.motu.com/english/motuaudio/HD192/body.html Should do well as a "soundcard" / converter. I would recommend electrostatics for your transducers - most dynamic tweeters are only reliable up to about 40 kHz or so. The Sennheiser electrostatic headphones are measured to around 60 kHz. You might find a ribbon tweeter that goes up there, but again, get the measurements. Piezo's might be an option, but they typically exhibit a lot of distortion characteristics. Cheers -geoff ____________________________________________________ Geoff Martin Ph.D. Tonmeister, Bang & Olufsen a/s email: ggm(at)bang-olufsen.dk web: www.tonmeister.ca web: www.bang-olufsen.com phone: +45 96 84 49 54