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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: RE: Sylvania 6550 dissipation posted by DannyR on November 23, 2016 at 09:37:18:
Tube rating can be confusing because three different ratings systems were in use during the prime tube years: Design Center (most conservative), Design Maximum (moderate conservative) and Absolute Maximum (least conservative). Tungsol 6550s (genuine) were originally rated @ 35W under Design Cemter but were later up-rated to 42W under Design Maximum system. GE 6550A were released with Design Max rating of 42W and never carried a Design Center rating AFAIK. Not sure where Sylvania fits into all this. They were not as widely used as Tungsol or GE.
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Follow Ups
- RE: Sylvania 6550 dissipation - Steve O 10:51:41 11/23/16 (1)
- RE: Sylvania 6550 dissipation - DannyR 22:56:55 11/23/16 (0)
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