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In Reply to: Have to look at the application, not just the tube itself posted by Freo-1 on November 29, 2015 at 10:13:48:
" The measurements earlier in this thread show the tubes distortion level between the 6BL7 and 6SN7 are very close. "
No measurements have been presented in this thread, only simulations. Real measurements say otherwise, and I'm not the only designer who has made them or reached this conclusion. Morgan Jones discussed this very thing in "Valve Amplifiers." The 6BL7 simply isn't as linear as the 6SN7, and your statement that "distortion was reduced by an order of magnitude" is highly unlikely to be true. That's why I asked if you had made a measurement. Of course, none of this means a 6BL7 can't be used to build a nice amp. For many uses, it's a highly underrated tube.
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Follow Ups
- I know what to look at - Triode_Kingdom 00:53:19 11/30/15 (4)
- RE: I know what to look at - dave slagle 11:14:34 12/03/15 (2)
- Good info. (nt) - Tre' 18:00:37 12/03/15 (1)
- Another input on this... - Freo-1 14:00:52 12/19/15 (0)
- Take away is cleaner sound - Freo-1 15:17:59 11/30/15 (0)