Just finished stuffing the board and applied power without speaker global feedback. The Monster lives, but with the global output feed back, less gain and is much better behaved, more refined sound quality.
6U10 for input and LTP driving 6JN6 (or 6JM6 with plate cap) output tubes running in triode mode. Pots for balancing and adjusting output current worked, running 40ma Iq with less than .001 volt mismatch across the 10ohm resisters.
This is my first tube amp project, PCB was a challenge with the ironed toner resist method, used same method for front component identification..
eyelets for all through holes for wiring and back mounted caps.
Next, try different output transformers, refinement and put into a box.
Next project selected is a KT88 design driven by 6N6H Russian tubes LTP and 6SN7 front end to allow for tube / tone character selection.
SO many tubes, SO little time....
6U10 for input and LTP driving 6JN6 (or 6JM6 with plate cap) output tubes running in triode mode. Pots for balancing and adjusting output current worked, running 40ma Iq with less than .001 volt mismatch across the 10ohm resisters.
This is my first tube amp project, PCB was a challenge with the ironed toner resist method, used same method for front component identification..
eyelets for all through holes for wiring and back mounted caps.
Next, try different output transformers, refinement and put into a box.
Next project selected is a KT88 design driven by 6N6H Russian tubes LTP and 6SN7 front end to allow for tube / tone character selection.
SO many tubes, SO little time....