Building a Leslie 70 control unit

[vanceinatlance]

I recently acquired a Leslie 70 speaker set without the control unit. I am currently in the process of building one for them using a schematic from Vintage Vibe's web site.
Thank you Vintage Vibe for sharing this info!!
Their schematic shows an op-amp integrated into the control unit.
Then, I ran across a picture of a control unit's intestines that did not have an op amp in it. I now wonder weather I am building the wrong control unit for these speakers? Does anyone who might have a set of  60's or 70's know if their unit has an op amp integrated inside it or is there anyone who has one without the op-amp integrated? Did Leslie market one control for Wurlitzer and another for Rhodes because of the difference in output? All feedback is very much appreciated.
Thanks,
Vance

[RandomGruve]

This thread is kind of old. Did you get the info you needed? The Leslie 60/70 control came in different models based on it's use. Model 112670 has the op-amp. This model was used with "electric pianos providing an output signal of less than 1.5 volts." This would be the Rhodes.
Model 110750 without the op-amp, "for use with pianos providing an output signal of 1.5 volts (min.)" This would be the Wurlitzer 200.
There are other models but I think this is the info you are wanting.

[vanceinatlance]

I did find out about the different models of controllers, thanks for your response! I have a passive control now and am using it with a BBE Acoustimax as a pre-amp when they are hooked up to the Rhodes Stage. I will eventually finish building a control with an op-amp, but have been occupied with other things lately. These sound amazing, but I don't know if they would be powerful enough in a live environment. I have not seen any pics of an actual control unit with op-amp yet. It would be great to know what chip they used and how the circuit board is layed out. It's probably fine with a standard 741 type, which I plan on trying, but it would be useful to know. Thanks again,
Vance