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RE: Q to John Swenson or others about Transconductance amp..

Posted by kenev (A) on November 6, 2007 at 01:04:58

In Reply to: RE: Q to John Swenson or others about Transconductance amp.. posted by C.Y on October 23, 2007 at 19:22:52:

Indeed, John's circuits are brilliant, innovative, excellent!

I had originally tried the EL84 version, as a first start to see what is all about this current fed single diver speakers and it was absolutely amazing on my Fostexes, although a little underpowered even for 95 dB speakers.

Next, I built the higher power KT88 version, which I am currently using, with CCS fed VR tubed shunt regulators (one per channel) instead of the original resistive voltage divider screen supply - it sounds a lot better now.

I have plans, also, for building the "high-power" 813 version, later in the not so far future.

I have not tried the transonductance pre-amp, but I would like to give it a try - after all it's not very difficult to build.

Once again,thanks John for sharing your brilliand ideas.

Regards,
Evangelos

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