The model 31A was made specifically for the balanced output of a Hammond “G-G” Console (IE Model B or C).
It is interesting to note that unlike later cabinets, this cabinet featured an ELECTRO-dynamic speaker. What this meant is that the 15″ woofer did not have a permanent magnet, like speakers have today, but rather a large coil of wire which acted as an electromagnet. This coil was also wired in such away that is acted as a filter choke for the amplifier’s power supply
|Amplifier Type||1 Channel Vacuum Tube|
|Output Power||35 Watts (?)|
|Drum||1 - 15" Speaker|
|Horn||1 - Compression Driver|
|Speeds||1 Speed (Stop/Tremolo)|
|Interface||6 Pin Balanced|