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FS: RCA 5691 Tubes (3)
FS: RCA 5691 Tubes (3)
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Old 30th October 2012, 12:04 AM   #1
ArtG is offline ArtG  United States
diyAudio Member
Join Date: Nov 2006
Location: Central PA
Default FS: RCA 5691 Tubes (3)

These are the industrial/military equivalent of 6SL7 tubes, and are all RCA built Red Base, Black plate, with three mica spacers and characteristic five support rods. One is labeled as CBS “Industrial”, but is identical to the RCAs otherwise.

All tubes tested on a calibrated TV7/U. Specs call for “32” minimum.
#1 44, 46
#2 46, 44
#3 52, 48
No gas, No shorts.

$40 each or $100 for all three plus actual shipping and insurance.
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