Triode vs Pentode mode? | Page 2 | The Gear Page The triode setting sounds extremely full at bedroom and small club volumes The triode setting is not usually loud enough without being miked with a loud drummer The pentode setting sounds more like a miniature Blackface Twin and the triode setting sounds similar to a Tweed Deluxe that only goes up to "8" instead of up to "12"
whos got parallel triode amps - matchless etc? | The Gear Page I love the sound of the Spitfire circuit, I believe the Goodsell is similar but only uses one triode, and his amps sound great I never got the chance to a b the two, but going on memory, the paralled triodes sound a little fatter Mike
Amp buzz in pentode mode but not triode mode? | The Gear Page The OP is describing a buzzing, not oscillation My guess is that something on the screen supply is faulty As it's not present in triode mode then I wouldn't suspect the main supply line as it also feeds the preamp
12AX7 tubes. . . matched and balanced triodes. . . any value here? The paraphase inverter I'm talking about applies preamp signal to one triode, whose output then goes to one output tube grid (labeled "inverted" in the image below) But that triode output is also applied to a voltage divider (loss approximately equal to the triode's gain), which then feeds a 2nd triode (labeled "non-inverted" in the image)
6V6 Cathode Follower as linestage buffer | The Gear Page Triode mode will give a lower output impedance from the 6V6 due to lower internal plate resistance (even though it's being used as a cathode follower; performance will be better than relying on feedback to make everything work) But triode mode also yields less power output compared to pentode mode, whatever tube you use
Balanced triode? - The Gear Page I have a Tophat Club Royale, I am going to try all Tung Sol pre tubes, should V#3 be balanced? What is the difference? Joe
12AX7 tubes. . . matched and balanced triodes. . . any value here? Somehow I don't trust that thetubestore really measures Mu; if they do, I wonder whether the results are that meaningful I suspect they might take a shortcut and measure voltage gain in a circuit, with triode yielding the same voltage gain being assumed to have the same "Mu" (or whatever) If my guess is correct, their assumption is you're
SRPP pentode wiring for 12AX7? - The Gear Page The lower triode acts as a gain stage with an active load, and the upper triode acts as a cathode follower with an active load The resistor Rk2 'senses' the load impedance of the following stage If the load impedance suddenly falls (a very loud transient note causing grid current to flow in the following stage for example), the upper triode
Preamp Tubes with triodes that have different gain factors? I am looking to compile a list of tubes with different triode gain factors because I would like to experiment a bit and really tweak some of my amps preamp stages Not sure how popular this concept was in vacuum tube production but I do know a few of these oddballs exist like the 12DW7 and also
NAD-The Juke has arrived!!! - The Gear Page Class AB, fixed bias 1X12 with 32 watts in pentode and 16 watts in triode Runs on El34's, 5881 6L6's, or KT66's with a simple bias adjustment Has the FAMOUS Juke"Golden Voice" pitch shifting vibrato and bias modulated tremelo and "Concert Hall" sideband Type C spring reverb