Model 31H
Amplifier Type
Tube (4 x 6L6 finals)
Output Power
35 watts (?)
Drum
1 - 15" speaker
Horn
1 - Compression Driver
Speeds
1

The model 31H was made specifically for the balanced output of a Hammond "G-G" Console (IE Model B or C).

I believe that this is no different then the model 31A save for some improvements in the amplifier design.  It is at this point (1950) that Leslie adopted a suffix letter to designate the manufacturer for which the cabinet was intended.  (H for Hammond, W for Wurlitzer, and C for Conn.)

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

                                                                                                                                                                                                                                                                                                           
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