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In the Forum: Melquiades Amplifier
In the Thread: The one-stage Melquiades.

Post Subject: 70% nickel?Posted by cv on: 2/8/2009

Hello
Do you mean 78% nickel? As it's Dave's iron, I'll even *pay* to take it off your hands :-)

Re 10Y: Well, it's one of the most linear tubes ever; and this has been backed up in some brief listening experiences to some of its variants. A friend actually measured some for driver duty many years ago, IIRC pushing 80V peak into a 30k load, ie 0.1W, distortion was about 0.01%, which if I'm correct, would be at 99db into an S2.

I think the most accurate description of these things was written by JC Morrison in SP - see if you can find his article about the 50 amp... he drew a relation between lower impedances (romantic) and higher impedances (cleaner). I'm not sure I believe the overall hypothesis, I think it is more a function of the particular high/low impedance tubes he was writing about (300B, 10, 45 etc). But how this translates to neutrality above "levels 1 or 2" is another matter entirely...I think the 6C33 is a complete outlier in this respect.

I'd love to listen to the latest installment of Macondo/Melq/the rest - must be about 200 iterations on now?! Alas I'm back in London now and a full time student, but if I do manage to graduate and arrange employment there may well be a celebratory US roadtrip in between...

Cheers
cv

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