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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: Don't think so posted by Tre' on May 8, 2024 at 16:39:36:
well... FWIW here is what spice says.
the basics are 10K OT 211 operating at 1kV -45V bias and around 90ma and inductance is stepped 40, 80 and 160Hy for both 20Hz and 50Hz.
The third "penne" plot has 40Hy of inductance and combination of 20Hz and 1000Hz each at -6dB as the excitation source. This appears to encompass an envelope a lot closer to the 50Hz one than the 20Hz one which is in line with what Partridge claimed was the realistic lowest frequency of interest for music.
personally i would be fine with 40Hy in this case with music being the source.
dave
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Follow Ups
- RE: Don't think so - dave slagle 09:20:58 05/13/24 (2)
- RE: Don't think so - Paul Joppa 12:05:54 05/15/24 (0)
- I think it's worth a lot. Thank you. nt - Tre' 11:06:12 05/13/24 (0)
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