I recently purchased a supposedly matched pair of RCA 6bc8 from evilBay. I have proceeded to put them into my drip 436c comp and when I put out the lights to inspect how the 0a2 regulator tubes light up I saw something moderately scary on the 6bc8s..
here's a pic, and a closeup:
A friend is suggesting that the tubes are not holding vacuum anymore? They sound pretty well and really not microphonic as opposed to some other 6bc8 that I have, so I'd be inclined to keep them if they'll last and aren't dangerous. On a side note, both tubes from the bought pair do this.
Cheers,
B.
here's a pic, and a closeup:
A friend is suggesting that the tubes are not holding vacuum anymore? They sound pretty well and really not microphonic as opposed to some other 6bc8 that I have, so I'd be inclined to keep them if they'll last and aren't dangerous. On a side note, both tubes from the bought pair do this.
Cheers,
B.