In Reply to: RE: Joppa M91 PF Derivative posted by anystereo on June 27, 2015 at 07:13:39:
hi David..
yes , finished the build in Dec 2014...http://www.audioasylum.com/cgi/vt.mpl?f=magnequest&m=11464
how something sounds is always subjective... to me they are excellent... minimal hum...
as far as cad files, they are in NX... attached jpg of the top plate... if you would like some others message me... thanks -Al
Edits: 06/29/15
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Follow Ups Full ThreadTopic - Sophia Electric 300B: 91-01 vs 91-05 - Plinius_Fan 21:03:57 05/07/13 (68)
- Dynamic contrasts lacking with 300B SETs - Plinius_Fan 23:08:28 05/14/13 (10)
- RE: Dynamic contrasts lacking with 300B SETs - Thorsten 23:26:08 05/24/13 (1)
- PS, maybe I am being obtuse... - Thorsten 08:10:36 05/25/13 (0)
- RE: Dynamic contrasts lacking with 300B SETs - drlowmu 11:50:17 05/20/13 (1)
- RE: Dynamic contrasts lacking with 300B SETs - cpotl 13:16:29 05/20/13 (0)
- RE: Dynamic contrasts lacking with 300B SETs - Paul Joppa 11:34:41 05/15/13 (3)
- Nice tip in helping recognise IMD; noted! nt. - RC Daniel 15:24:53 05/15/13 (2)
- RE: Nice tip in helping recognise IMD; noted! nt. - charles1dad 21:36:34 05/17/13 (1)
- Shouting in agreement! nt. - RC Daniel 17:46:06 05/18/13 (0)
- RE: Dynamic contrasts lacking with 300B SETs - Larry I 05:43:08 05/15/13 (0)
- RE: Dynamic contrasts lacking with 300B SETs - RC Daniel 03:59:50 05/15/13 (0)
- RE: Sophia Electric 300B: neither. - Jamesbmay 08:51:02 05/14/13 (0)
- Western Electric 91A SET by Tube Audio Labs - Plinius_Fan 10:20:23 05/11/13 (8)
- RE: Western Electric 91A SET by Tube Audio Labs - RC Daniel 04:22:01 05/13/13 (1)
- Thanks a lot - Plinius_Fan 22:39:40 05/14/13 (0)
- RE: Western Electric 91A SET by Tube Audio Labs - Paul Joppa 23:46:41 05/11/13 (5)
- Here is the thing - Michael Samra 00:18:46 05/15/13 (0)
- Tube Audio Lab WE91A - Sebrof 06:27:53 05/12/13 (3)
- RE: Tube Audio Lab WE91A - drlowmu 13:01:54 05/12/13 (2)
- Uber Supply - Sebrof 19:39:59 05/12/13 (1)
- RE: Uber Supply - drlowmu 22:30:40 05/12/13 (0)
- Listening to the Allnic T1500 at the moment - Plinius_Fan 06:43:22 05/10/13 (0)
- RE: Sophia Electric 300B: 91-01 vs 91-05 - Johno 03:47:03 05/09/13 (0)
- RE: Sophia Electric 300B: 91-01 vs 91-05 - RC Daniel 17:11:21 05/08/13 (2)
- Another yes - Frihed89 02:19:22 05/09/13 (0)
- RE: Sophia Electric 300B: 91-01 vs 91-05 - Gerry E. 18:01:15 05/08/13 (0)
- Bad experience with Sophia Electric - Lord Soth 09:06:52 05/08/13 (4)
- I can't believe this didn't cause more outrage - Tre' 09:35:43 05/11/13 (2)
- 100% agree with you Tre. - RC Daniel 14:15:07 05/11/13 (1)
- I burn in all new tube amps 24 hrs all the time - Lord Soth 01:35:27 05/12/13 (0)
- RE: Bad experience with Sophia Electric - Plinius_Fan 23:22:15 05/08/13 (0)
- RE: Sophia Electric 300B: 91-01 vs 91-05 - Chip647 07:52:01 05/08/13 (36)
- Is it better to use interstage transformers ? - Plinius_Fan 16:56:45 05/08/13 (35)
- The WE91 did not use interstage transformers - Frihed89 02:40:03 05/09/13 (15)
- Agreed! Nor does a "91" use cascaded 6sn7 halves. - RC Daniel 16:00:43 05/09/13 (14)
- A suitable modern "91" circuit ... - Paul Joppa 19:27:31 05/09/13 (13)
- Yep - that is the one that... - RC Daniel 20:20:44 05/09/13 (12)
- RE: Yep - that is the one that... - Paul Joppa 20:56:57 05/09/13 (11)
- M91 derivative - long! - Paul Joppa 13:47:14 05/10/13 (2)
- Thanks Paul. - RC Daniel 23:28:33 05/10/13 (1)
- RE: Thanks Paul. - Paul Joppa 23:58:07 05/10/13 (0)
- RE: Joppa M91 PF Derivative - awsjr 05:28:17 05/10/13 (6)
- RE: Joppa M91 PF Derivative - anystereo 07:13:39 06/27/15 (1)
- RE: Joppa M91 PF Derivative - awsjr 05:49:17 06/29/15 (0)
- RE: Joppa M91 PF Derivative - mach1 02:56:30 05/12/13 (2)
- RE: Joppa M91 PF Derivative - RC Daniel 15:06:58 05/14/13 (1)
- RE: Joppa M91 PF Derivative - Paul Joppa 19:18:05 05/14/13 (0)
- RE: Joppa M91 PF Derivative - RC Daniel 13:39:58 05/10/13 (0)
- Interested? Hell's yes... - RC Daniel 22:09:52 05/09/13 (0)
- RE: Is it better to use interstage transformers ? - drlowmu 20:42:44 05/08/13 (18)
- RE: Is it better to use interstage transformers ? - Plinius_Fan 23:23:02 05/08/13 (17)
- RE: Is it better to use interstage transformers ? - Frihed89 02:54:35 05/09/13 (15)
- DHT comparos (OT). - RC Daniel 18:24:56 05/09/13 (7)
- RE: DHT comparos (OT). - drummerwill 19:29:17 05/09/13 (6)
- Don Garber's approach seems to be different - Frihed89 02:51:27 05/10/13 (4)
- RE: Don Garber's approach seems to be different - drummerwill 08:15:12 05/10/13 (2)
- SET 801A - Roli 13:01:06 05/10/13 (1)
- Dadgummit! SHHHhhhhh..... ~nT - Cleantimestream 13:52:19 05/27/13 (0)
- RE: Don Garber's approach seems to be different - RC Daniel 03:30:57 05/10/13 (0)
- RE: DHT comparos (OT). - RC Daniel 22:14:52 05/09/13 (0)
- RE: Is it better to use interstage transformers ? - Sebrof 05:08:58 05/09/13 (6)
- Tell us more about the OPTs - Frihed89 07:45:02 05/09/13 (5)
- RE: Tell us more about the OPTs - Sebrof 10:35:00 05/09/13 (3)
- RE: Tell us more about the OPTs - awsjr 05:39:02 05/10/13 (0)
- RE: Tell us more about the OPTs - Palustris 13:50:38 05/09/13 (0)
- RE: Tell us more about the OPTs - RC Daniel 13:07:29 05/09/13 (0)
- RE: Tell us more about the OPTs - Palustris 08:13:17 05/09/13 (0)
- RE: Is it better to use interstage transformers ? - drlowmu 01:46:36 05/09/13 (0)
Follow Ups
- RE: Joppa M91 PF Derivative - awsjr 05:49:17 06/29/15 (0)