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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Try the 7581 tube posted by artemus on August 11, 2021 at 17:09:15:
"The KT 66 is also a good tube in the ST70. Then there is 6p3se/6n3ce also. The 7581 is akin to the KT66"
None of these tubes perform optimally into the low-Z load presented by the Dynaco transformers. 6.6K is their sweet spot, as published in the manufacturers' original data. The 6P3S-E may be even higher. The EL34 is the best match for this amp.
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Follow Ups
- ST-70 Output Tubes - Triode_Kingdom 22:19:41 08/11/21 (50)
- RE: ST-70 Output Tubes - Tre' 10:18:43 08/12/21 (31)
- Not only him - 1973shovel 07:52:04 08/13/21 (28)
- RE: Not only him - Tre' 10:00:32 08/13/21 (24)
- Thank you Tre' - 1973shovel 06:07:18 08/14/21 (1)
- You're welcome. nt - Tre' 17:50:52 08/14/21 (0)
- RE: Not only him - Triode_Kingdom 17:58:09 08/13/21 (21)
- No I haven't.... - Tre' 17:52:40 08/14/21 (0)
- I'll be anxious to hear his reply - 1973shovel 06:09:11 08/14/21 (19)
- RE: I'll be anxious to hear his reply - Triode_Kingdom 06:40:26 08/14/21 (18)
- All good points - 1973shovel 08:14:55 08/14/21 (17)
- RE: All good points - Tre' 18:25:44 08/14/21 (15)
- "Don't tell anybody" - 1973shovel 05:24:29 08/15/21 (14)
- RE: "Don't tell anybody" - Triode_Kingdom 07:15:54 08/15/21 (2)
- RE: "Don't tell anybody" - PakProtector 16:37:56 10/25/21 (0)
- "Wish I had bought a dozen of these" - 1973shovel 04:46:55 08/16/21 (0)
- RE: "Don't tell anybody" - Tre' 06:32:28 08/15/21 (10)
- "There's more to life than money" - 1973shovel 05:01:00 08/16/21 (9)
- RE: "There's more to life than money" - Tre' 08:39:54 08/16/21 (8)
- Nice - 1973shovel 03:24:18 08/17/21 (1)
- RE: Nice - pictureguy 16:45:11 11/04/21 (0)
- Very Cool! - Triode_Kingdom 09:46:16 08/16/21 (5)
- I'd say that is a great story - 1973shovel 03:39:12 08/17/21 (3)
- RE: I'd say that is a great story - PakProtector 08:11:10 08/17/21 (2)
- Sounds like fun (nt) - 1973shovel 08:10:36 08/18/21 (1)
- RE: Sounds like fun (nt) - PakProtector 08:47:06 08/26/21 (0)
- "12 degrees" somehow that doesn't sound like fun. nt - Tre' 09:53:25 08/16/21 (0)
- I like that idea! nt - Tre' 17:55:06 08/14/21 (0)
- FWIW, mineuses the 12AT7 . Bob recomended the KT66 - artemus 09:50:17 08/13/21 (0)
- But... - airtime 09:10:37 08/13/21 (1)
- "he must have" - 1973shovel 10:44:53 08/13/21 (0)
- RE: ST-70 Output Tubes - Triode_Kingdom 11:37:47 08/12/21 (1)
- Agreed. nt - Tre' 14:04:25 08/12/21 (0)
- I was speaking about - artemus 04:22:27 08/12/21 (17)
- RE: I was speaking about - Tre' 10:05:57 08/12/21 (16)
- When I Bought the VTA ST-70, Bob Latino himself... - artemus 10:33:38 08/12/21 (5)
- KT66 - Triode_Kingdom 11:50:36 08/12/21 (4)
- I don't judge audio components by their measurements alone... - artemus 14:39:11 08/12/21 (1)
- RE: I don't judge audio components by their measurements alone... - Triode_Kingdom 14:47:34 08/12/21 (0)
- Yup - Tre' 14:10:28 08/12/21 (1)
- RE: Yup - Triode_Kingdom 14:39:11 08/12/21 (0)
- RE: I was speaking about - airtime 10:20:28 08/12/21 (9)
- RE: I was speaking about - Tre' 10:33:59 08/12/21 (8)
- "I see. the 7643 is a sub for a 7199" - 1973shovel 08:00:31 08/13/21 (5)
- RE: "I see. the 7643 is a sub for a 7199" - Tre' 17:58:04 08/14/21 (4)
- Airtime and Cleantimestream may agree - 1973shovel 05:11:26 08/15/21 (1)
- I know nothing. All I did was... - airtime 06:46:03 08/15/21 (0)
- Do you mean I taught Tre something about tubes !!! - airtime 19:27:19 08/14/21 (1)
- Yes you did. Thanks. nt - Tre' 09:01:15 08/16/21 (0)
- I emailed tubes4hifi - Tre' 14:06:39 08/12/21 (1)
- RE: I emailed tubes4hifi - pictureguy 13:00:15 11/05/21 (0)
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