HELP!!! Install slow motor in leslie 900

[Happyorganplayer]

Can anyone help? Has anyone modified and added a two speed bottom motor and wired it in keeping stock electronic controls for motors in a leslie 900, 910? I have a two speed motor from an internal t-500 unit. I see a six pin connector with only two wires for fast motor hooked up with four empty. I'm wondering if I can add the wires for slow motor too the same connector ? I dont want to to wreck my leslie!

[dannicdem]

So in answer to your first question, you can connect to the 6-pin connector but for both fast and slow motors to function and be switched you would need to take power from the slow motor wires of the upper motor and route those to your newly installed lower slow motor.

[Happyorganplayer]

Thank you dannicdem! I have a new problem now. The Leslie 900 keeps blowing fuses after the unit warms up. Lots of hum from it as well. So I'm going to take the amp and power supply out. Does anyone know what the best crossover is i can use as the top speaker is 16ohm and bass speaker is 4ohm. I'm guessing I have to use a 8ohm amp to run these two different ohmages together! I know I need a 800hz passive crossover but what is the best way to go? Buy an amp with crossover? Or just install a normal Leslie type crossover and hook up a bass amp?

[dannicdem]

The 900 crossover is on the amp panel. That signal feeds to the 3 different amps via a different wire for each speaker: red, orange or yellow. The bass amp is 4 ohms. The horn amp is 16 ohms and I'm fairly certain the stationary amp is 16 ohms. My electronics skills are limited at best so the best advice I can suggest is to keep reading other posts. I've just completed a Leslie 925 rebuild project and sent the power supply and amp to Lars at Captain Foldback for repair. He's in Peterborough so it would be an easy trip for you.