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In Reply to: Thank You posted by Freo-1 on November 28, 2015 at 13:27:18:
My comment was based both on advertised curves and measurements I've made. Of course, many things can mask this difference, including NFB. I use the 6BL7/6BX7 in a totem-pole configuration for the pre-driver in my 211 SETs. Back when I was sorting out the design, the 6SN7 provided better native distortion numbers. However, it wasn't up to the task otherwise (voltage and power dissipation). I eventually installed about 6-8 dB of NFB to improve damping factor, and with that, the difference between the two tubes virtually disappeared. At any rate, you claimed lower distortion, so it was reasonable to ask whether you made measurements.
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Follow Ups
- RE: Thank You - Triode_Kingdom 15:32:05 11/28/15 (10)
- RE: Thank You - Freo-1 15:45:36 11/28/15 (9)
- RE: Thank You - Triode_Kingdom 21:52:03 11/28/15 (8)
- RE: Thank You - Freo-1 05:50:15 11/29/15 (7)
- RE: Thank You - Triode_Kingdom 09:16:51 11/29/15 (6)
- Have to look at the application, not just the tube itself - Freo-1 10:13:48 11/29/15 (5)
- 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)