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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: While Many Vintage Amp Mfrs. Abused 6BQ5s, 7189s Take That Abuse Better ! posted by Interstage Tranny on July 31, 2016 at 12:47:33:
IT,
In addition to the important points you raised, consider money and economies of scale. If, for whatever reason, reputable tube maker X had to produce 7189s, a quantity greater than that needed to fill a contract, etc., would be constructed, with the "excess" being sold as 6BQ5/EL84s.
It's both ethical and legal to deliver a product that exceeds specifications, as is the case of 7189 vs. 6BQ5. If doing so was profitable, you can bet that some tubes sold as 6BQ5 were really 7189. However, you can't count on any particular NOS 6BQ5 specimen as being a 7189. Date code research of 7189 production runs might provide an indication.
Eli D.
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Follow Ups
- RE: While Many Vintage Amp Mfrs. Abused 6BQ5s, 7189s Take That Abuse Better ! - Eli Duttman 13:07:53 08/01/16 (0)
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