Plastic Nev. wrote:
I wouldn't mind a trawl through that publication myself gazman, obviously a lot dated now, though for straight analogue amplification and not digital, a lot of the theory will still hold true.
As for my reading choices, considering I want something light entertainment to while away the time in either doctors waiting rooms, or now with chemo, the time taken up while it is pumped in to me, I have dug out some old Leslie Charteris "The Saint" books that I was given but not yet read. A bit dated now of course, however if bearing that in mind, they suffice to while away the time.
My reading habits are so erratic that I've only managed to reach page 30 so far.
It is fundamental reading in the most pleasant way and details almost all the techniques of valve audio amplification in its heyday.
Nearly all the well known and much sought after amps of the past (eBay prices on period amps often many £1000s) were based on its designs.
There are several amplifier designs in it that I built at the time.
I used the KT88 valve for the most part as I wanted power but didn't like using a top cap.
The TT21 and TT22 transmitting valves (not detailed in this booklet) were virtually identical to the KT88 except they had a top cap which allowed for a higher anode voltage (1250v) and hence could produce a higher power output.
However I thought it looked old fashioned and was quite dangerous as the top connection was very easy to touch accidentally.
~Touching 500 volts dc was usually just unpleasant, touching 1250 volts was downright dangerous.

My favourite was the 100 watt amplifier using a push-pull pair in class AB1 fixed bias.
Send me your email address via PM and I'll send you a pdf version if you like.