Here’s some pictures I took of my Leslie 122 RV. From what I could find on this model I understand that they usually come with a Leslie-designed reverb amp which is not deemed all that desirable, but this one actually has a Hammond AO-44-1 reverb amp in it, the very same as is found in the A-100 series. I think it sounds great, even through the small speaker that is mounted on the side of the cabinet.
Hammond Documentary by the BBC featuring Keith Emerson, Steve Winwood and Jimmy Smith
Jon Lord (‘Deep Purple’) gives a demonstration on how he got his signature sound, and demonstrates it playing the organ solo from ‘Highway Star’.