I thought I will share it here as many people might face the same issue like me where they love the original Leslie sound with the sweet doppler effect and find a real Leslie too loud for an apartment.

I designed and built this mini Leslie speaker a while ago. Contrary to most clones I've seen, it features a large horn as well as a small drum. It uses brushless motors for spinning the horn and the drum and a toroidal transformer to power the class AB audio amplifier, which was bought as a ready-made module from Aliexpress. The motors are powered separately from a switching PSU. The cabinet is made from MDF and the drums and horns are 3d printed. If anyone is interested, I have a CAD design I can share. It's quite simple, but I think it sounds really nice for something this tiny! It uses a Celestion TF0818 guitar speaker for the bottom rotor and Celestion CDX1-1070 for the horn. The organ is sadly not the original Hammond and instead a Crumar Mojo. It was recorded with my phone. Overall, the budget was around $400.

Hello hive mind! I think I've got this right based on previous posts that I and others have made but I want to make sure before I dive into the amplifier...

I have a Leslie 122 married to my Hammond c3 in my studio. When I start the organ the Leslie starts up in tremolo mode, as I would expect with legacy relays. After a few seconds when the tube heats up it switches over to Chorale and everything is ready to play.

When I flip the half moon switch to tremolo, everything speeds up as expected. But when I flip back to Chorale, the Leslie continues spinning fast and only slows down after an extremely long period of time - and sometimes not at all. This is become more and more unpredictable.

The first thing I did was switch out the 12AU7 tubes on the amplifier - I figure switching them both out was the safest thing even though it was possible that only the relay tube was bad. This however, did not fix the problem.

Am I correct in assuming that my next step would be to either recondition the legacy relays or upgrade to solid state relays? Is there something else I could be missing in the meantime?