whats wrong with 6C33-B power output tube? (longish)

OTL Asylum

OTL, Output Transformerless Amplifier User Group.

0

Hello folks,

Been monitoring this page for a just a few weeks now and see that with regards to amplifiers, most, if not all posts refer to the M60 series. I am curious as to why this is, as I see that most of the folks that post are builders and Atma-Sphere has another kit, namely the Novacron. But there is never any mention of it here. I also note that there is a lot of talk about the 6336, a hard to find tube (I think).
Related perhaps, but not only are there no posts about the Novacron, there is absolutely no talk about its output tube, the 6C33C-B.
I am curious why folks looking for more power (lower impedance) would bypass the 6C33C-B, an output tube that is (or was) plentiful, reasonably priced (I guess), in favor of the 6336? Is the 6C33C-B that bad? Hard to drive, hard to balance, unreliable, too hot, wont fit, etc..?
With regards to the Novacron, maybe its those 12AT7?s!
Also, does anyone know why Atma-Sphere does not include a power supply schematic in their M60-II assembly manual? I purchased one and found its omission curious. No big deal though.
As for myself, I am very close to finishing my first homebrew project, a single ended amplifier using the #45 power triode. It was published in Sound Practices by Gorden Rankin and is called the "Bugle".
I was thinking that the next project would be a roughly 25 watt OTL as that would be about the right power output needed for one of the sets of speakers I own.
Anyway folks, thanks!
Curt

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Topic - whats wrong with 6C33-B power output tube? (longish) - Curt 17:41:22 03/15/00 (10)

Re: whats wrong with 6C33-B power output tube? (longish) - Kevin 17:58:08 03/16/00 (4)

Re: whats wrong with 6C33-B power output tube? (longish) - Lew 08:25:07 03/17/00 (2)

Re: whats wrong with 6C33-B power output tube? (longish) - Kevin 14:52:51 03/17/00 (1)

Re: whats wrong with 6C33-B power output tube? (longish) - Lew 12:16:03 03/20/00 (0)

Re: whats wrong with 6C33-B power output tube? (longish) - Michel 03:58:05 03/17/00 (0)

Re: whats wrong with 6C33-B power output tube? (longish) - mark 08:54:48 03/16/00 (0)

Ralph sez M60 sounds better when I talked to him. - tubeglow 08:48:44 03/16/00 (0)

Ralph, 6C33? - Dan 21:29:18 03/15/00 (2)

Re: Ralph, 6C33? - John Harper 05:01:24 03/16/00 (0)

Re: Ralph, 6C33? - DK 03:44:08 03/16/00 (0)