Two leslies are always better than one! Yes, of course, they will change speeds differently, they'll probably run at very slightly different speeds, and I always liked to set the treble horns on different steps on the pulleys anyway. Phase issues? The sounds will be out of phase due to the mechanics of what's going on (not out of phase as in +/- connections being reversed) but that's a good thing. The sounds and reflections will interact in a multiplicity of ways, changing every second. Imagine a string quartet for a moment. Now double the number of players and double again. There will be all sorts of phasing 'issues' but that's what makes the ensemble bigger. each time.

More than two leslies? The tremolo effect will gradually start to be more diffuse. I think my max was 8, including some 145s, 147s, a 125 and some 760s (it was 50+ years ago and I wish I'd written it all down, taken photos and recorded it). Still sounded pretty cool and absolutely no problem in mixing leslie types. 145 + 147 would be just fine!

Bottom line? If you've got the space and can afford it, then go for it and enjoy!

I agree with Andy. although I have a an analog ancient B3, I found that dual Leslies (147 and 21H 2-speed mod) is a rich experience. A Hammond tech artfully set them up to run off one moon switch. Plus, if one goes down and needs work for some reason, there is redundancy. We learned in anatomy classes that dual Leslies is the only reason we have 2 ears, one on each side of our head. :cool:

That is what I have currently connected to my C3 with solid state relays in both which also gives me a stop function. Great sounding rig. I have a JR20 cabinet in need of a amp refurb which I may add for reverb.
The bottom end of that 21H rattles the pictures on the wall.

Jim

I couldn't find this in the XK-5 manual but with the XK-3c the digital Leslie is still available on the left 1/4" output when the 11 pin Leslie connection is used. If the XK-5 works the same way you have the option of adding a 3rd Leslie. Just connect that output to an amp and pick (or create) the Digital Leslie that blends best with the others. You could also set the digital Leslie to PR-40 and have it sound like a Hammond Tone Cabinet. You would also still have the Un-Leslied right 1/4" output available. Let no output go unused.

Edit: Never mind. I found a note in the manual (Pg. 15) that says the digital Leslie is disabled when the 11 pin connector is used. That's too bad, I use the 1/4" output as a PR-40 on my XK-3c. It sounds nice.

Thanks for this detailed and very helpful reply. I am new to all this, and trying to get the most authentic experience possible out of this clone wheel.

I dont plan to use my 11 pin connector. Just 1/4 inch into the boss organ pre pedal, which will have two nine pin outputs for 147.But yes, I should still have another 1/4 output for the digital leslie sim. (if of course I understand this correctly).

This adapter cable: https://hammondorganco.com/studio-12-cable may enable you to use the 11 pin connector into the pedal.

Yes sorry, I'm going to order the pedal with dual six pin outputs.

Boss Organ Pre Pedal? Can you add a link please?

google boss organ pedal
Relatively new one man operation startup business in MA

FWIW the complete text of the

• "RETURN & REFUND POLICY
  
  
  If you have any problems with any of our products, call us and we will work it out."

Might be good to inquire if, or for for how long they accept returns just in case you change your mind for some yet unknown reason