In addition to the line up of speakers, came a smaller design called ' Orpheus' or Leslie 25 . This one had only a 12" speaker and a single rotor. The cabinet was slightly lower than the 33" model 45 . The amplifier in this one had a new design, a duet of 6L6 tubes, rated at 20W. The cabinet could be ordered without the amplifier, to be powered from the internal amplifier of a spinet-type organ. Electrically, model 25 mated with the same types of organs as model 47 and 45. The connection was made using two components: The 26-1 Console Connector Chassis and a Leslie Console Adapter. The Console Adapter was tailored for each individual organ model. Hammond (spinet) organs was to use Adapter # 27-1 (more detailed explanations can be found in the Leslie 25 manual found through the Leslie manuals page).
 (Pictures kindly supplied by Bill)

Leslie 25 from the back. The 6-pin cable connects to the small box seen on the bottom left
 

By 1963 the end of line for the single speed Leslie speaker had come. The market was ready for the 'pipe organ' sound of a slow spinning Leslie, the first of these was the model 125 introduced at the NAMM show that year. It replaced model 25 and soon after the remaining models were replaced with two-speed versions - model 122, 251, 147 and 145. In order to accommodate the larger dual-motor stack, the motors were now all in the middle compartment of the cabinet where on the single speed cabinets, the bottom motor was placed under the 15" speaker's baffle. In 1967 the 'missing combination' model came on the market - namely model 142, combining the Hammond-type input with the 'shorty' 33" cabinet.