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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: CLEAR TOP 7025 posted by unclestu on June 25, 2014 at 14:51:52:
I have a specimen like this. I could never really identify it for certain. By my research, it is claimed to be an RCA-Canada product. This seems kind of reasonable given the plate style and carbon coating (very similar to early RCA tubes). RCA had the clear top 12AU7, so a side-getter variant of a 12AX7 wouldn't be THAT crazy.If it's an RCA tube, why are there no RCA markings? I know manufacturer and product brand shenanigans were in full swing by the 60s. Maybe it's a thing of politics regarding domestic manufacturing and consumption? Would 1950-60s RCA have had trouble manufacturing something elsewhere (Canada, Mexico, whatever) and selling it in the US? If did they contract out their tooling and expertise, could they sell these tubes ONLY in Canada? Maybe it's a thing of standards? Fear of contaminating the market with copies or frauds (hence such a different looking 12ax7)? Or is it just plain monopolization (more money to make when your demand is divided by a national border)?
Can anyone comments on my stab at this? I'm not very familiar with economic policies of the day with respect to these things...
(edit: small mistake)
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May your tubes be lively, warm, and long-lasting. Holy be thy heater.
Edits: 06/25/14
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Follow Ups
- RE: CLEAR TOP 7025 - TubeAcolyte 15:42:03 06/25/14 (1)
- RE: CLEAR TOP 7025 - SETdude 06:21:05 06/27/14 (0)
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