Thanks for the specific pointer. I'll report if and when I get one of these built and would very much like to hear from anyone else that tries this. I think this is worth pursuing because the quality of the speech Doubletalk produces is really much better than the chincy little speaker they give you can manage. .dan. writes: > > The "pop" when using external audio devices might be the dc voltage found > in the output of the audio amp in the doubletalk described in this: > > http://downloads.rcsys.com/xfmrcpl.txt > > The above also describes an adapter made using radio shack parts to solve > the problem, which is in part a grounding situation difference when using > the audio out on the doubletalk. > > xv > ic|xc > > _______________________________________________ > Speakup mailing list > Speakup at braille.uwo.ca > http://speech.braille.uwo.ca/mailman/listinfo/speakup -- Janina Sajka, Chair Accessibility Workgroup Free Standards Group (FSG) janina at freestandards.org Phone: +1 202.494.7040