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Safe to powerup without Speaker?
12-28-2014, 04:37 PM
7G7 is a sharp-cutoff pentode; 7B7 is a remote-cutoff pentode. You need a 7B7 for proper AVC action.
7AH7 is the preferred substitute but 7A7, 7H7 and 7T7 will also sub. http://www.nj7p.info/Tube/SQL/Tube_query.php?Type=7B7 -- Ron Ramirez Ferdinand IN
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Messages In This Thread
Safe to powerup without Speaker? - by keith49vj3 - 12-25-2014, 04:00 PM
RE: Safe to powerup without Speaker? - by Steve Davis - 12-25-2014, 05:38 PM
RE: Safe to powerup without Speaker? - by David - 12-25-2014, 08:37 PM
RE: Safe to powerup without Speaker? - by OZ4 - 12-25-2014, 08:56 PM
RE: Safe to powerup without Speaker? - by morzh - 12-25-2014, 09:02 PM
RE: Safe to powerup without Speaker? - by keith49vj3 - 12-25-2014, 11:07 PM
RE: Safe to powerup without Speaker? - by morzh - 12-25-2014, 11:54 PM
RE: Safe to powerup without Speaker? - by joejoe - 12-26-2014, 11:36 PM
RE: Safe to powerup without Speaker? - by thirtiesradio - 12-27-2014, 04:54 AM
RE: Safe to powerup without Speaker? - by keith49vj3 - 12-27-2014, 02:40 PM
RE: Safe to powerup without Speaker? - by morzh - 12-27-2014, 04:14 PM
RE: Safe to powerup without Speaker? - by OZ4 - 12-27-2014, 04:22 PM
RE: Safe to powerup without Speaker? - by Warren - 12-27-2014, 05:11 PM
RE: Safe to powerup without Speaker? - by keith49vj3 - 12-27-2014, 06:04 PM
RE: Safe to powerup without Speaker? - by keith49vj3 - 12-28-2014, 04:00 PM
RE: Safe to powerup without Speaker? - by morzh - 12-28-2014, 04:14 PM
RE: Safe to powerup without Speaker? - by keith49vj3 - 12-28-2014, 04:24 PM
RE: Safe to powerup without Speaker? - by Ron Ramirez - 12-28-2014, 04:37 PM
RE: Safe to powerup without Speaker? - by keith49vj3 - 12-28-2014, 05:16 PM
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