11-03-2017, 07:00 PM
Agree, 7S and 7AC look the same to me as well.
Only, tube type 8417 is listed as having an 8LY base on my favorite online tube database, NJ7P.org?
Edit: Duncan Amps shows 8417 as having the same pinout as 6L6. I'm not familiar with the 8LY designation.
Edit #2: RCA tube manual RC-30 shows the 8LY designation as having pins 1 and 3 tied together (plate). Otherwise the same.
Only, tube type 8417 is listed as having an 8LY base on my favorite online tube database, NJ7P.org?
Edit: Duncan Amps shows 8417 as having the same pinout as 6L6. I'm not familiar with the 8LY designation.
Edit #2: RCA tube manual RC-30 shows the 8LY designation as having pins 1 and 3 tied together (plate). Otherwise the same.
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Ron Ramirez
Ferdinand IN
