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Old 21st May 2006, 01:35 PM   #1
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Default CF and SRPP in one circuit . .

. . is there a sonic price?

What do our learned people think of this:



Meant to be flexible, one here said ****:
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Old 21st May 2006, 07:43 PM   #2
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Sonic price as in....?
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Old 21st May 2006, 09:43 PM   #3
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Apologies for my shorthand.

I meant:

in providing switching between a classic common cathode-cathode follower cascade (CF) and a shunt-regulated push-pull (SRPP) circuit (it also has a passive path) in the one circuit, is there anything about this circuit that would reduce transparency/ transient response etc, over separate CF and SRPP circuits?

Any advice appreciated

Thanks
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Old 21st May 2006, 10:08 PM   #4
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Quote:
Originally posted by Geek
Sonic price as in....?

Is a SRPP circuit with 6sn7GT a good circuit?

^.^
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Old 21st May 2006, 11:48 PM   #5
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Hi,

Quote:
Originally posted by rick57
Apologies for my shorthand.

I meant:

in providing switching between a classic common cathode-cathode follower cascade (CF) and a shunt-regulated push-pull (SRPP) circuit (it also has a passive path) in the one circuit, is there anything about this circuit that would reduce transparency/ transient response etc, over separate CF and SRPP circuits?
If you use a good switch or relays, nothing that you'd hear response wise. Though unless you use a multiple deck rotary (expensive) or relays (cheaper), stereo seperation can suffer.

Quote:
Originally posted by mod_evil



Is a SRPP circuit with 6sn7GT a good circuit?

^.^
*budda, boom ching!*

A mate has good success with a 6SN7GT SRPP in tubifying his tuner output
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Old 21st May 2006, 11:58 PM   #6
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No, not really, save for some minute capacitive coupling in switch SW3 and sharing a common PS. And also combining the miller input 'C' of the two separate stages, esp the CF coupled stage, minute or not as it may be. Some may have a problem with all those nasty, dirty switches in the signal path.
Me thinks this was designed to compare CF & SRPP. The passive will have some HF attenuation because of the 100k level and volume pots, depending on their settings and your interconnects of course!

Wayne
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