OK, I seem to be FILO (first in with the board; last out with the assembly). After many purchasing screw-ups and side trips into other projects, I've almost got my NJMB built and housed in an old 42 case.
Now I have some questions:
(1) How do I set up the rail decoupling for my NJ321/729 cards?
I'd like to be able to swap them back and forth between my Hi-Capped NAC72 and the NJMB. I currently have 56uF/25V Oscons + 0.10uF/50V BlackGate HiQs + 27R on the rails of the NJ321/729s. How about switching this to 47uF/50V Nichicon Muse + 0.1uF/100V Wima + 27R?
(2) What should I use to set higher Vouts on the TRs?
I've got some 5K multi-turn pots for R1, but the TR calculator is driving me a little bonkers. Long term, I plan to feed raw 34.4V from a NAP140 to the NJ42 and run its rails at ~28V. (I just overhauled the 140 so the rail out comes off a 10000uF res cap.) Short term, I'd like to pull the raw rail from a spare DIN on the back of the Hi-CAP (37V?) currently feeding a NAC72.
(3) Can I put a headphone jack in this thing?
There's a 0.83cm hole where the balance pot used to be, and the tape monitor switch could be used to switch between speakers & cans. Any suggestions on what and how to fit?