Stax electrostatics

Andrew · Post by **Andrew** » Sat Apr 30, 2011 9:58 am

Yes, mines the same, uses the signal to power the stators, I have thought about building a directly coupled design, but I have too much other stuff on.

Mike H · Post by **Mike H** » Sat Apr 30, 2011 10:33 am

Begorrah! Somebody must have a go - and soon!

FredHS · Post by **FredHS** » Sat Apr 30, 2011 11:54 am

A friend of mine is current building the hybrid amp from
high - amp . de / html / frame.html (remove blanks). I found at least one issue with the PCB and brought it to the designer's attention, who fixed it. The circuit diagram looks very good to me (I also ran a simulation), but I would recommend to check and double-check the PCB if you decide to use the one published on the site mentioned above. The 2SJ109 is hard to come by; it can be replaced by 2 thermally coupled 2SJ74.
A Japanese circuit designer ran a simulation on this amp as well:
wiki . livedoor . jp / funya2420 / d / Hybridamp (remove blanks). The results are in agreement with mine.

FredHS · Post by **FredHS** » Sat Apr 30, 2011 11:57 am

Sorry, I have 5 postings now but I have not been registered for >3 days --- still not permitted to post links...
I asked Nick if he would be willing to post the 2 links mentioned above.

Post by **Nick** » Sat Apr 30, 2011 1:45 pm

Here are the links for the above

http://high-amp.de/html/frame.html and
http://wiki.livedoor.jp/funya2420/d/Hybridamp

The restrictions are a pain at the start, but they do a good job of keeping us mainly spam free.

audio-talk

Stax electrostatics

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