Agree. Old style "F" would be like modern AB impedance code. Old style "C" would be like modern FB or EB if FB not available.
Fliptops has a MOD brand sub for the type "C" which has been altered for use open side up. Most of the MOD tanks that I know of can have the ground scheme easily altered by solder bridge jumper at jack board.
https://www.fliptops.net/catalog/p-1...vintage-ampegs
Fliptops has a MOD brand sub for the type "C" which has been altered for use open side up. Most of the MOD tanks that I know of can have the ground scheme easily altered by solder bridge jumper at jack board.
https://www.fliptops.net/catalog/p-1...vintage-ampegs
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