Reasearching it online proved pretty amusing as all of the information on these tubes was based on if not outright plaigerized from my reasearch in these two articles. Please email me if you have any information. Thanks to Allan Giles for bringing this to my attention. The same tube is sold under at least 20 different names at wildly different prices. But some tubes have very simliar names but are very different tubes.
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Reasearching it online proved pretty amusing as all of the information on these tubes was based on if not outright plaigerized from my reasearch in these two articles. Please email me if you have any information. Thanks to Allan Giles for bringing this to my attention. The same tube is sold under at least 20 different names at wildly different prices. But some tubes have very simliar names but are very different tubes. Russian Tubes? Why not buy American?
For international readers, a vacuum tube is exactly the same thing as a valve. Tube is the American term, valve is the British term. I will, however, refer to them simply as tubes or vacuum tubes in this and other articles on this site. By all accounts they were the best but now supplies of them are running out and they have gotten very expensive and are harder to find. Several online stores sell vacuum tubes.
New-old stock vacuum tubes are tubes produced long ago that have been sitting in a warehouse for years unused. You can still find them if you have the cash, but buy them from a reliable dealer.
I buy new production Russian tubes, so I have no experience with dealers who I could recommend. New tubes are made in Russia, China, and Slovakia. The most common one is a Russian variant of the 6L6. It comes in many names and it is sold at many often outrageous prices. This and my other articles in my Guide to Guitars, Amps, and Tubes are written purely to help my students and fellow guitar players make more educated choices on purchasing equipment, and on how to use and maintain it.
In general modifying, dismantling, or buying things because someone on the web told you to, is a bad idea. Thanks, Jay Skyler.
Sovtek 5881 WXT | 6l6 WGC | 6Π3C-E Tube Guide
Owen Harries and marketed by the Hivac Co. Harries is believed[ by whom? This design also minimized interference of secondary emission electrons dislodged from the anode. EMI engineers Cabot Bull and Sidney Rodda improved the Harries design with a pair of beam plates, connected to the cathode, which directed the electron streams into two narrow areas and also acted like a suppressor grid to redirect some secondary electrons back to the anode. The beam tetrode design was also undertaken to avoid the patents which the giant Philips firm held on power pentodes in Europe.
Turn left at the gopher. My feeling is that they are. They sure appear to be. I think they are the same as the Mesa branded 6l6str. If they tested out as excellent quality, they got the diamond "otr" logo stamped on them and were stockpiled across the union for the military.
5881 / 6L6WGC / 6P3S-E - Russia / Sov.
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