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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: 6HS6 = 6AU6 posted by Dave Pogue on January 16, 2006 at 14:35:57:
The EF91, aka 6AM6, has similar characteristics, but a different pinout.
Electrical differences: EF91 heater 0.30 A, 6HS6 0.45 A
EF91 gm = 7500 to 8700 umho, 6HS6 9500
Pinout: EF91 6HS6
1 G1 G1
2 K G3
3 F F
4 F F
5 A A
6 G3 G2
7 G2 K
Assuming that the circut has G3 connected to K, you need to exchange the connections to pins 6 and 7 to substitute the EF91.
Angela Instruments had a good deal on EF91s last year.
Hope this helps.
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Follow Ups
- Possible substitute: EF91 (different pinout). - TimFox 09:27:25 01/17/06 (0)
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