Free tube audio class

Skip to 11:30 to start. Roger Modjeski speaks for about 90 minutes and gives lots of info.

If you also want to learn about sand amps then skip ahead to 1:50:30 and watch some hippy named Nelson Pass.

Thanks for the link! My viewing for tonight......

I'm going to watch Frasier reruns instead.

it gets really interesting around the 40 minute point when he starts explaining how he gets 40wpc on his RM10 amp which is a P-P EL84 amp
like the 17wpc ST-35, and he uses very small OPTs.
My favorite part 43:45 he talks about how Audio Research burns up their tubes - I've been saying that for 20+ years!
Jim McShane - you'll love the part where he talks about testing tubes 1:08 - 1:17

tubes4hifi wrote:it gets really interesting around the 40 minute point when he starts explaining how he gets 40wpc on his RM10 amp which is a P-P EL84 amp
like the 17wpc ST-35, and he uses very small OPTs.
My favorite part 43:45 he talks about how Audio Research burns up their tubes - I've been saying that for 20+ years!
Jim McShane - you'll love the part where he talks about testing tubes 1:08 - 1:17

There are some words of wisdom in his presentation, but I'll just say that IMHO some of his test/match ideas are somewhat divorced from reality. Yes, I think many of us know that the Gm varies with plate current - but once we get past that point I don't fully agree with his positions.

He's certainly a smart guy with lots of experience and credentials, but you have to remember that he's also adopted some philosophies and taken some positions that he wants to advance - which is normal but requires us as listeners to be able to be discriminating.

I watched it and enjoyed it - and learned a few things too!

Thanks will definitely watch!