Leslie speaker question

[RMS2003]

I had a quick question about the leslie speaker. I've noticed that some organs a hear, when the leslie speed is switched off, it sounds like the rotars stop rotating completely. Yet on others when the leslie speed is turned off it rotates slowly but never stops completely. Is there a setting somewhere that changes how the leslie rotates or is that just the way some speakers are made.

Sorry if the terminology is a little vague, I'm not expert on organs or leslies.

[ee_guy]

Older model Leslies only had stop and tremolo (fast and stop).  I'm not sure what year chorale was added (slow).  Number wise, for example, a model 45 is fast/stop while a 145 is slow/stop.  Also, there was a kit available that gives you stop/slow/fast, although you don't see many of these.  This kit also had a "brake" function that would quickly cause a transition from fast to stop.

Jazz organists (Jimmy Smith, etc.) unplug the top rotor's slow motor.  So they have stop/fast for the upper rotor and slow/fast for the lower.

I run a cabinet from Motion Sound.  It has stop/slow/fast.