 
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
|
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
69.174.137.28
Looking for information on 4 ea JoLida Tube Factory 811A tubes, what is their value and quality. They look new in original boxes. They are marked:
JoLida Tube Factory
Annapolis Junction, MD
Made in P.R.C
They have a code: 9220 (written vertically)
Thanks, Joe
Follow Ups:
Most likely Shuguang 811A's. FWIW, PRC = People's Republic of China.
Most likely NOS, not bought and relabeled by Jolida any longer. These are Ham radio RF tubes, not really for audio.
Edits: 06/09/23
"These are Ham radio RF tubes, not for audio."
Have you told Altec? :)
812 is more the audio tube vs 811 that is zero bias.
Altec Lansing 1570B needs cathode driven to make the 811 work.
Edits: 06/09/23
Or Wavac? Although discontinued, they once offered audio amplifiers designed around the 811. As far as "ham radio tubes", I'm sure the 845, 211 and 805 could be cobbled into that category as well. Yet they're all used in several current audio amplifier designs.
| FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
||||||||||||||
This post is made possible by the generous support of people like you and our sponsors:
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
