08-10-2021, 09:38 AM
Interesting. I was using Arcturus Blue 124s in my 65.
(It came with a full set of globe Cuningham tubes. Oddly enough, when I tested the tubes, the two 324s and the C-327 were all weak/bad. The globe CX-345s and CX-380 were all good!)
Anyway, I tried two 24A tubes and it still broke into oscillation if the volume control was turned up too high, so I reinstalled the Arcturus Blue 124s. An RCA UY-227 replaced the Cunningham C-327, so my 65 still has all globe tubes.
I'll have to look in my tube stash and see if I have any Cunningham 24s or a 27, so that it has a matched set again.
But all of that does not answer the oscillation issue. ???
(It came with a full set of globe Cuningham tubes. Oddly enough, when I tested the tubes, the two 324s and the C-327 were all weak/bad. The globe CX-345s and CX-380 were all good!)
Anyway, I tried two 24A tubes and it still broke into oscillation if the volume control was turned up too high, so I reinstalled the Arcturus Blue 124s. An RCA UY-227 replaced the Cunningham C-327, so my 65 still has all globe tubes.
I'll have to look in my tube stash and see if I have any Cunningham 24s or a 27, so that it has a matched set again.
But all of that does not answer the oscillation issue. ???
--
Ron Ramirez
Ferdinand IN
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