Driving 6Y6GTs with El Cheapo 12AT7 front end?

Posted by jyourison (A) on April 25, 2013 at 10:47:34

I've acquired some 6y6GTs that I'd like to try in push-pull. I have read that tubes with low plate resistance and high-ish transconductance are easier to drive than some others. Eli mentioned in a post elsewhere that the 12AT7 with CCS used in the El Cheapo amp could, for example drive the 7591A in push-pull.

The 6y6GT at the operating point I'm considering has a plate resistance of around 18,300 Ohms and a transconductance of around 7,100 uMhos.

Interestingly, an old Acrosound flyer shows a circuit labeled for 6V6/6Y6/EL84 driven by a 12AX7. I have heard that the 12AX7 may run into issues when trying to drive more difficult output tubes, so I'd like to learn what would make a better choice.

Other circuits I have found use 6sn7, 12sn7, 12BZ7 or 6eu7 + 5687 as splitter/drivers, some using them in more than one stage.

Would the El Cheapo 12AT7 CCS splitter/driver work okay with the 6y6GT? If not, what might work better?

Thanks for any insight,
Jeff

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Topic - Driving 6Y6GTs with El Cheapo 12AT7 front end? - jyourison 10:47:34 04/25/13 (24)

RE: Driving 6Y6GTs with El Cheapo 12AT7 front end? - Paul Joppa 20:48:01 04/25/13 (2)

Grid current - Triode_Kingdom 22:42:04 04/26/13 (0)

RE: Driving 6Y6GTs with El Cheapo 12AT7 front end? - jyourison 21:11:03 04/25/13 (0)

RE: Driving 6Y6GTs with El Cheapo 12AT7 front end? - Eli Duttman 17:20:21 04/25/13 (18)

RE: Driving 6Y6GTs with El Cheapo 12AT7 front end? - jyourison 19:03:17 04/25/13 (17)

RE: Driving 6Y6GTs with El Cheapo 12AT7 front end? - Eli Duttman 22:06:45 04/25/13 (16)

Would any of these triodes also work? - jyourison 17:13:45 04/26/13 (15)

RE: Would any of these triodes also work? - Eli Duttman 18:08:07 04/26/13 (14)

O/P Stage - Eli Duttman 08:06:52 04/29/13 (4)

Bias - Eli Duttman 12:45:52 04/29/13 (3)

RE: Bias - jyourison 19:01:42 04/29/13 (2)

RE: Bias - Eli Duttman 19:43:49 04/30/13 (0)

RE: Bias - Eli Duttman 22:57:18 04/29/13 (0)

Small Signal Hen Scratches - Eli Duttman 20:11:16 04/28/13 (0)

B+ PSU Hen Scratches - Eli Duttman 00:36:32 04/28/13 (6)

RE: B+ PSU Hen Scratches - jyourison 03:32:34 05/6/13 (1)

RE: B+ PSU Hen Scratches - Eli Duttman 05:44:53 05/7/13 (0)

Capacitor Value - Eli Duttman 17:50:51 04/28/13 (0)

RE: B+ PSU Hen Scratches - jyourison 08:48:21 04/28/13 (1)

RE: B+ PSU Hen Scratches - Eli Duttman 09:41:50 04/28/13 (0)

Addendum - Eli Duttman 01:30:02 04/28/13 (0)

RE: Would any of these triodes also work? - Eli Duttman 21:45:46 04/27/13 (0)

CCSs fix a whole host of problems. 12AT7s with CCS will be more than up to the task. - Chip647 12:02:45 04/25/13 (1)

RE: CCSs fix a whole host of problems. 12AT7s with CCS will be more than up to the task. - jyourison 19:04:32 04/25/13 (0)

Driving 6Y6GTs with El Cheapo 12AT7 front end?

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