▲ 11 r/diytubes
mystery components in Dukane PA amplifier
I just picked up this Dukane 1A385 that’s been pretty heavily modified and includes components i haven’t come across before… in particular the large metal casings to the left of the output transformer.
It appears to have been worked on by a company called Signal Equipment Co. out of Seattle at some point and from what I can tell from just a brief look is that a step up transformer (Dukane 3A65) has been added in place of one preamp tube, theres also a relay and these two metal cans marked REP 94 E (the biggest) and RET 307 P (the smaller of the two) that were later modifications.
Anyone have any idea what these components are or any guesses on what this amp was modified to do?
u/Ok-Donkey4149 — 10 days ago