While the usual opinion of many players of the Rotosonic-equipped cabinets is not very high, this series of Leslies does have many satisfied users and admirers, and is capable of fine, rich sound, especially for the playing of more "theatrical" music. Excessive spin-up/spin-down times can be somewhat ameliorated by correct adjustment of lower-rotor belt tension, and replacement of the belt if it is worn. The biggest trouble spot in these as well as all Leslies equipped with the [RotosonicDrum] is the [Mercotac] slip-ring contact. If the lower rotor exhibits static or noise in the audio as it rotates, the [Mercotac] is worn or stuck and needs to be replaced. Replacement of the Mercotac is a simple, plug-and-play affair.
*Upgrades
-A blown or poor-sounding treble driver can be replaced by the current Hammond-Suzuki "ferro-fluid" treble driver. Anecdotal field reports suggest this to be a worthwile
and effective replacement driver for these cabinets, and is capable of handling higher power levels than the V21 driver, especially at the lower crossover point used for the horn channel in these Leslies.
+A blown or poor-sounding treble driver can be replaced by the current Hammond-Suzuki "ferro-fluid" treble driver. Anecdotal field reports suggest this to be a worthwhile
and effective replacement driver for these cabinets, and is capable of handling higher power levels than the V21 driver, especially at the lower crossover point used for the horn channel in these Leslies.
