Few questions , screens need a regulated voltage around 200V because of the absolute maximum rating stated in the datasheet right?
My supply would give around 400-450V , really I need a B+ of 600V ? Is just power output related or will work bad at 450V ? Never experienced with this kind of tubes
Anyway how much power do I get with theese tubes ?
lowering screen voltage lowers cathode currents, but you can always adjust the grid bias anyway...triode mu seems to go a bit higher with lower plate voltages, in this case you can look at the screen as a triode plate....following is an excerpt from the datasheet....
based on my listening experience with the 6LU8 with regulated screens, pentode mode can sound better than ultra-linear having built both types....
the 6N1p tubes are good sounding tubes,i like them a lot and are dirt cheap, sometimes, the 6dj8 can be a relabeled 6ES8, good for cascodes and long tail pairs and circuits with gnfb...
I tried both w/ the 829's and agree. I did connect the UL taps to the driver plate, sort of "schade" style feedback, and it improved things. Mr Millett appears to have done the same thing in his final amp design, and he's actually got test equipment and uses it
, so it's probably a good idea.- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.