Subject: low-power OTL
I deeply appreciate your efforts with the Tube CAD journal, and I read them frequently, although as a beginner there is very little I can contribute.
However, in your April-May 2001 edition "emails" section, you address the question of a low-power OTL amp, and expressed a wish for triode-connected curves for the EL509. Well, here they are! I hope this helps.
I am interested in the forthcoming 4W OTL article, although I am looking for a quality "one watt" amp for using with my 105 dB/W JBL 2404 treble horns above 5 kHz. So if you come up with a real cheapie version without too much extra work over your 4W design, I would probably take it on!