The instrument
The 247 speaker is a variant of the 147 with a wide housing.
Details
The Leslie 247 has rotors for bass and treble
with fast and slow speeds. The amplifier corresponds to that of the 147 model, with 40 watts and two 6550 power tubes. The speaker consists of a Jensen 3/4″ V21 tweeter and a Jensen 15″ C15L bass speaker, each with 16 ohms. The crossover frequency is 800 Hz. The connection is 6-pin for Audio Ground, Tremolo Control AC, AC Power Return, AC Power Hot, Tremolo Control AC, Audio Signal Hot. (Source: Amazona)