Parafeed
100+ Head-Fier
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Quote:
Some interesting ideas. Anti-triode: I can't help but think that if I wanted to maximise voltage swing and source 2xIq into the load, then I'd use SRPP to start with and 2 triodes, rather than subbing silicon for the upper triode. Mu-follower's: taking the low impedance output from a silicon loaded tube doesn't sound good. Use a mu follower with a high gm/gain triode as the cathode follower and a CCS instead of the load resistor. (I tried a direct coupled beta follower after reading Morgan Jones, but preferred the sound of a CCS'd mu-follower, even though it still needed a coupling cap from the gain triode to drive the top cathode follower.) The constant voltage gyrator is more appealing. Anyway, food for thought. Thanks for the link.
Originally Posted by adamus /img/forum/go_quote.gif Anti-Triode SEPP, how to do best? - diyAudio |
Some interesting ideas. Anti-triode: I can't help but think that if I wanted to maximise voltage swing and source 2xIq into the load, then I'd use SRPP to start with and 2 triodes, rather than subbing silicon for the upper triode. Mu-follower's: taking the low impedance output from a silicon loaded tube doesn't sound good. Use a mu follower with a high gm/gain triode as the cathode follower and a CCS instead of the load resistor. (I tried a direct coupled beta follower after reading Morgan Jones, but preferred the sound of a CCS'd mu-follower, even though it still needed a coupling cap from the gain triode to drive the top cathode follower.) The constant voltage gyrator is more appealing. Anyway, food for thought. Thanks for the link.