For anyone interested, the schematic of both amps can be found here:
http://www.tcaas.btinternet.co.uk/index-5.htm
http://www.tcaas.btinternet.co.uk/index-5.htm
I have built thr 75 watter it was good very good! I used the Powertran kit that was considered to be the Rolls Royce version .
I do in fact still have one about the house and have built many clones of it.
I still agree with a lot of the design criteria and feel that a design such as this with Baxendall diode compensation etc as valid also the fact that the VAS stage was isolated from the diff pair via a current booster helped to improve distortion figures below a then magical 0.01% mid band
As to the thirty watt amplifier this is very similar to a design that I have made many hundreds of times the themal stabilty of the output stage is superb
regards Trev
I do in fact still have one about the house and have built many clones of it.
I still agree with a lot of the design criteria and feel that a design such as this with Baxendall diode compensation etc as valid also the fact that the VAS stage was isolated from the diff pair via a current booster helped to improve distortion figures below a then magical 0.01% mid band
As to the thirty watt amplifier this is very similar to a design that I have made many hundreds of times the themal stabilty of the output stage is superb
regards Trev
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