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Old 11th May 2004, 04:16 PM   #11
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Quote:
Originally posted by fdegrove
Hi,



That could actually be a good idea; a CCS loaded anode follower direct coupled into a CCS sunk CF...

Has anyone implemented that yet?

Cheers,
If you include the Bottlehead Foreplay with "Anticipation" C4S upgrade(CCS loaded VA stage direct coupled to CCS(ink) CF, then yes, hundreds of times.


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Old 11th May 2004, 07:58 PM   #12
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Quote:
If you include the Bottlehead Foreplay with "Anticipation" C4S upgrade(CCS loaded VA stage direct coupled to CCS(ink) CF, then yes, hundreds of times.
Thanks for reminding me, Pedroskova.

Some Foreplay owners swear by that mod.

Here's a link to a guy who has combined a Foreplay with the VTV 6SN7 and C4S.

Man, this stuff really fascinates me, and I have so much to learn before I can begin to understand and innovate. I think I need some more electronics education, but that's another thread...

Best,

George Ferguson
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Old 11th May 2004, 08:46 PM   #13
grataku is offline grataku  United States
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I am afraid the more you'll learn the less you'll feel that innovation is needed.
Best of luck and be your journey long and satisfying.
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Old 11th May 2004, 09:02 PM   #14
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Quote:
Originally posted by DrDeville




Here's a link to a guy who has combined a Foreplay with the VTV 6SN7 and C4S.


Hey! That's my preamp!... with one exception - I don't bypass the cathode resistor in the first stage.
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Old 11th May 2004, 09:15 PM   #15
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Hi,

Quote:
I don't bypass the cathode resistor in the first stage.
There's little use for it anyway; gain is maxed out due to the CCS load and you don't need the lower Zout as you couple into a CF.

All in all it should sound faster, crisper than a bypassed Rk.
You may want to bias the 6SN7 a little deeper though.

Cheers,
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Old 11th May 2004, 09:31 PM   #16
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Quote:
Originally posted by fdegrove
Hi,


You may want to bias the 6SN7 a little deeper though.

Cheers,

Yep, but unfortunately, the little transformer is pretty maxed out, and the B+ sags pretty drastically after a certain point.

I've just finished the PSU for the "next generation" and it will allow me much more leeway. It will be a CCS'ed 76 tube driving a parallel- fed stepdown transformer.

It's the phono stage part of it that scares me to death: I'm getting a bad case of cold feet.
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Old 12th May 2004, 12:26 AM   #17
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Hi,

Quote:
It's the phono stage part of it that scares me to death: I'm getting a bad case of cold feet.
Here's something to help you get rid of those cold feet:

Cheers,
Attached Images
File Type: jpg 71aeqsce.jpg (67.8 KB, 376 views)
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Old 12th May 2004, 01:10 AM   #18
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Quote:
Originally posted by fdegrove
Hi,



Here's something to help you get rid of those cold feet:


Helluva way to get rid of cold feet ---amputation due to frostbite.
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Old 12th May 2004, 02:18 AM   #19
SY is offline SY  United States
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Quote:
Originally posted by pedroskova



Helluva way to get rid of cold feet ---amputation due to frostbite.
Surprisingly over-complicated for Frank. And so many overly expensive parts, too.
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Old 12th May 2004, 02:32 AM   #20
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Hi,

Quote:
Surprisingly over-complicated for Frank.
Mom....They're teasing me again...

Actually, it's not my design at all....Sy's right, it's way too simple.

The RIAA LCR circuit is really one box per channel that you can buy from Lundahl and Sowter (or was it S&B?)....

It doesn't even cater for MC carts and it should have a S&B TVC to keep up the iron spirit...Which it doesn't...
Dang...Junk that thing.

Cheers,
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