Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
In Reply to: RE: Out of curiosity posted by Mendel on January 28, 2011 at 12:23:51:
They seem to be a late mC1 with the D getters, all the later long plates are halo style getters although I have seen one f91 with a D getter. The mC1 or f91/92 appellation should be located right above the date codes. If it is infact the mC1 they are quite valuable as are all Mullard long plates, but I find them excessively warm as I stated elsewhere. The f91 series is a totally different animal, significantly more open and airy sounding.
The f91's can be distinguished by the unusual construction on the top mica opposite each plate structure. There is a metal staple with a little coated wire extending from the outboard staple to the cathode.
Stu
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Out of curiosity - unclestu 12:57:31 01/28/11 (7)
- RE: Out of curiosity - Mendel 14:00:26 01/28/11 (5)
- RE: Out of curiosity - unclestu 15:40:38 01/28/11 (4)
- RE: Out of curiosity - Mendel 17:08:30 01/28/11 (2)
- RE: Out of curiosity - david62 06:55:04 02/04/11 (1)
- RE: Out of curiosity - Mendel 08:27:54 02/04/11 (0)
- RE: Out of curiosity - becketma@yahoo.com 16:41:49 01/28/11 (0)
- RE: Out of curiosity - becketma@yahoo.com 13:59:34 01/28/11 (0)