Re: 6H13C instead of 6AS7G, my experiment

Posted by Cousin Billy (M) on November 8, 2004 at 06:22:04

In Reply to: Re: 6H13C instead of 6AS7G posted by Legendre on October 31, 2004 at 07:42:25:

I now have a number of these different variations. One set of Sovteks doesn't have the flying =C=, one set does. The rest of the tubes all have the =C=. Obviously the one set of Sovteks with the =C= are rebranded Svet's.

I put my heaviest tubes in one MA1 Silver, OTK 74-76's (yes, one set of tubes is physically heavier than the others, don't argue, the scale does not lie) and I put my non =C= Sovteks in the other amp.

Here is my first observation.
There appeared to be a slight shift of balance to the side with the =C='s. I then turned everything off, and switched the 6H13C's, obviously leaving the 6SN7's. This balance abnomoly followed the tubes. Everything moved slightly towards the speaker with the =C='s. This may be explained by my second observation.

My second observation is more important.
When I went really close to the =C='s tweeter, there was slightly more extension in the upper frequencies, I could hear more of the music. Female voices especially showed this extension, with ever so slightly more articulate, everything was more focused. It is this high frequency improvement that makes me only want higher numbered OTK Svetlana's.

The differences where sutle, but they where there. To my ears anyway.

Bill

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Follow Ups Full Thread

Topic - 6H13C instead of 6AS7G - cousinbillyl 05:18:16 10/31/04 (15)

Re: 6H13C instead of 6AS7G - Legendre 07:42:25 10/31/04 (13)

Re: 6H13C instead of 6AS7G, my experiment - Cousin Billy 06:22:04 11/08/04 (0)

Svetlana - would you say more about this? - Rushton 13:10:51 10/31/04 (11)

Re: Svetlana - would you say more about this? - Legendre 07:56:27 11/01/04 (8)

Re: Svetlana - would you say more about this? - TerryC 23:00:37 11/01/04 (3)

To further muddy the waters.. - Legendre 08:09:52 11/02/04 (2)

Re: To further muddy the waters.. - TerryC 11:43:06 11/02/04 (0)

Re: To further muddy the waters.. - pathologymd 10:13:38 11/02/04 (0)

Thanks to all who offered information on this. (nt) - Rushton 15:55:03 11/01/04 (0)

Re: Svetlana - would you say more about this? - LineArrayNut 09:36:40 11/01/04 (2)

Screws - Legendre 15:05:20 11/01/04 (1)

yes sir, I appreciate it! Thanks again! (nt) - LineArrayNut 16:40:25 11/01/04 (0)

Re: Svetlana - would you say more about this? - Rod M 18:07:49 10/31/04 (0)

Re: Svetlana - would you say more about this? - LineArrayNut 13:51:47 10/31/04 (0)

Svetlana - Rushton 13:05:26 10/31/04 (0)

Re: 6H13C instead of 6AS7G - LineArrayNut 06:02:01 10/31/04 (0)

Follow Ups

Re: 6H13C instead of 6AS7G, my experiment - Cousin Billy 06:22:04 11/08/04 (0)

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