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E80CF=7643 Philips Miniwatt SQ Germany "PINCHED WAIST" used/good 1961 (11.4/10.4mA) (6BL8 sub)
E80CF=7643 Philips Miniwatt SQ Germany "PINCHED WAIST" used/good 1961 (11.4/10.4mA) (6BL8 sub)
By Tube World
$ 39.99
1 tube) E80CF=7643 Philips Miniwatt SQ Germany "PINCHED WAIST" used/good 1961 (BG2-D1F3=1961) (Triode/Pentode)
triode) 11.4ma Gm=4000
pentode) 10.4ma Gm=6250 (strong)
Good Triode section Ma and Gm = 10-13ma Gm= 4500-5000
Good Pentode section Ma and Gm = 9-11ma Gm = 6000-6500
(The E80CF is a "SPECIAL QUALITY" medium-mu triode/pentode. Specs are similar to 6BL8=ECF80)
- McIntosh MR-67 tuner
See more: vacuum tube
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