In Reply to: RE: 6as7 "preamp". posted by Tre' on April 9, 2016 at 12:59:00:
Thanks. It was a academic question. The 6AS7 has way too much input capacitance for my taste. Just wondering. 25 watt wirewounds are relatively cheap and dropping 90v across them would not be a problem. 90 volts across a 1.2 K plate resistor. 70v plate to cathode for the 6AS7 and 20v across a 250 ohm on the cathode all @ 80 mA. It would make a hell of a buffer but rolloff in the highs would be bad.
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Follow Ups
- RE: 6as7 "preamp". - gavinhaley 13:22:43 04/09/16 (5)
- RE: 6as7 "preamp". - Tre' 14:04:33 04/09/16 (4)
- RE: 6as7 "preamp". - gavinhaley 14:15:59 04/09/16 (3)
- RE: 6as7 "preamp". - Tre' 15:31:16 04/09/16 (2)
- RE: 6as7 "preamp". - gavinhaley 15:39:48 04/09/16 (1)
- RE: 6as7 "preamp". - drsx 10:32:31 04/11/16 (0)