need-Leslie 120 interface schematic

[Freddy G]

Hi all,
I'm hoping someone can kindly tell me how to hook up a leslie 120 cabinet for guitar. There is no interface with the cab that I have, so I thought I could just rig something myself to switch the motor speed but I'm not sure how it works. From what I googled, pins 3 & 4 are AC power in, and pins 2 & 5 are tremolo relay coils, but I don't get how to switch speed ???. Can anyone help?
Thanks,
Freddy

 

[pucho812]

you need what is known as a leslie combo preamp. There are several available based on your leslie model. They are easy to DIY and I have built one for a client of mine who had a leslie 147.
http://www.captain-foldback.com/Leslie_sub/combo_preamps.htm

 

[Freddy G]

Thanks for the info pucho,
But I think that is meant for the Leslies that have an amplifier built in. Mine does not. It only has one 12" speaker and a motor. I intend on feeding the speaker from a guitar amp head. What I'm looking for is just how to switch speeds.
Freddy

 

[pucho812]

you sir are correct. those would be for a leslie with an amp.  I was unaware of the model 120 until I looked it up.

Model 120

Cabinet: Wood
Rotors: One Bass rotor
Amplifiers: none
Speeds: Fast-Slow
Speakers: One 12"
Belts:
Motor-fast:
Motor-slow:
Notes: An amplifierless Leslie, akin to the 110.
Hookup: Speaker on pins 1 & 6, 3 & 4 AC input, 2 & 5 relay (similar to
147 hookup)


This thread over at gear sluts will help you out.

http://www.gearslutz.com/board/so-much-gear-so-little-time/3470-leslie-guitar.html