In Reply to: RE: You could run that tube in ultralinear mode posted by Tre' on September 14, 2023 at 13:33:14:
The ultra linear patent, assigned to Arco, disagrees with you. Link below
Other manufacturers, like Dynaco and Marantz, recognized the benefit, but not wanting to pay royalties, moved the taps slightly so as to get around the patent. In fact the entire industry did this and that practice is still around to this day, mostly out of tradition and ignorance of that went down; which is why you are presenting the info you have.
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Follow Ups
- Ultralinear patent - Ralph 14:00:22 09/14/23 (20)
- RE: Ultralinear patent - Tre' 14:32:20 09/14/23 (19)
- RE: Ultralinear patent - tube wrangler 17:32:51 09/15/23 (2)
- There is merit and validity in what Dennis says here, Sigh, nothing beats empirical knowledge!~nT - Cleantimestream 10:30:35 10/29/23 (0)
- Dennis, this guy is looking for you - Tre' 19:56:18 09/16/23 (0)
- RE: Ultralinear patent - Ralph 08:00:47 09/15/23 (6)
- RE: Ultralinear patent - Tre' 14:39:39 09/15/23 (4)
- RE: Ultralinear patent - Ralph 08:23:01 09/27/23 (3)
- these UL curves, from your link, are the same as the ones I posted. - Tre' 09:35:55 09/28/23 (1)
- RE: these UL curves, from your link, are the same as the ones I posted. - Ralph 09:57:51 09/28/23 (0)
- RE: Ultralinear patent - grindstone 20:13:30 09/27/23 (0)
- 40% Just what Acro claims is optimum - Tre' 13:32:19 09/15/23 (0)
- tung sol 6550 UL plate curves at the recommended 40% tap - Tre' 15:58:19 09/14/23 (0)
- From a Acro pamphlet on UL operation showing different tap values - Tre' 15:22:58 09/14/23 (7)
- Circling back to the OP - Pabloaguas 12:19:33 09/18/23 (6)
- RE: Circling back to the OP - Paul Joppa 22:06:29 09/20/23 (1)
- RE: Circling back to the OP - PakProtector 09:01:18 11/20/23 (0)
- Try the Russian 6E6P or perhaps the 6E5P - coronadope 14:41:58 09/18/23 (2)
- RE: Try the Russian 6E6P or perhaps the 6E5P - coronadope 14:50:36 09/18/23 (1)
- RE: Try the Russian 6E6P or perhaps the 6E5P - Tre' 17:18:43 09/18/23 (0)
- RE: Circling back to the OP - Tre' 13:50:14 09/18/23 (0)