Tube DIY Asylum: Re: Confessions of a plate choke convert & a few CCS questions (long) by steve jones Do It Yourself (DIY) paradise for tube and SET project builders.

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Posted by steve jones on June 4, 2002 at 15:25:18

In Reply to: Confessions of a plate choke convert & a few CCS questions (long) posted by Doug Flynn on June 3, 2002 at 02:41:03:

Doug wrote: "I've been reading a lot about pentode CCS (thanks to Gary P) loading of tubes. CCS looks a bit fiddly, and I can't say I'm thrilled at putting all that silicon in my amp."

Up to hearing Gary's design, I was where you are at. I wasn't going to throw any sand in my pristine tube amps!

Then, I was at Gary's when we compared via switch a plate choke, stock C4S, and Rev 2 of his pentode CCS.

At line level, there was what we all considered to be a large difference between the three, with *all* favoring the pentode CCS as sounding the least artificial.

When the pentode CCS was added to the output stage of Gary's 45 amp (with increased voltage swing), the differences were multipled about a factor of 5X.

"However, if it sounds better I'll do it."

Give it a shot, it does sound better. CCS loading is the future.

Steve

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