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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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In Reply to: What's the downside to trying a 45 tube? posted by Yada on April 12, 2010 at 19:14:24:
Yada, tube BRAND has nothing to do with what the tube IS-- when you are talking NOS (New Old Stock).
Back in the Day, tube factories made tons of tubes of one type-- at a time, then switched over to a run of something else. Some factories made only one or two types, also.
A certain design, made by one factory, could have anything from RCA, Sylvania, Motorola, Zenith, Raytheon, G.E., N.U., Tung-Sol, and at least a dozen more-- names stamped on it, and every one could be the SAME TUBE--or maybe NOT.
For instance, you might get two Sylvania 45 tubes in Sylvania boxes. One tube could be G.E. origin, the other could be RCA. A third might be a Sylvania. Depending on batch, the filaments might be hung from mica insulators, from flat-wire springs, from coiled-wire springs, or a whole lot more.
As you can see-- with old tubes, BRAND means NOTHING. TUBE CONSTRUCTION and MATERIALS USED determines the tube's characteristics.
Can you plunk-in the NOS N.U. instead of the NOS RCA? Of course! The N.U. probably IS an RCA-- or maybe Sylvania, or maybe Raytheon, or maybe Tung-Sol, or maybe G.E., maybe Sears, maybe Zenith, maybe Philco, etc. Of course, for two amps, you use two identical tubes. This DOES NOT necessarily mean the same brand-- just the same TUBES. LOOK at them! INSIDE THEM. Use magnifying glass-- pick two that are alike in every way.
So, put it in. Observe what it does. If it runs cool, sounds clean, and doesn't do anything radical, it will probably run.
---Dennis---
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Follow Ups
- RE: What's the downside to trying a 45 tube? - tube wrangler 04/13/1000:20:44 04/13/10 (0)
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