Hi all,
I am finally getting around to play with my RM5 and realized this is at least 40 years old and probably overdue for an overhaul. I saw somewhere that some versions didn't use the cathode bypass caps and wondering if anyone knew why or what versions did or didn't? Going to update the PS caps as well. One other thing I noticed, Roger put all the heaters in series, I haven't measured the voltage across each yet but couldn't that leave an unbalanced condition, ie one tube 6.5v and another 6.1 etc.?
Look forward to hearing from those of you who have experience with this fine preamp.
Cheers