[HAM] Modified Leslie 145

[John Cornicello]

Big thanks to Mike Casino. He was able to supply an install manual for the
1147 that solved the volume issue (gain control screw in the 1147).

But I'm still struggling with the speed control. I'm thinking that the horn
rotor belt might be a bit stretched, causing the upper rotor spin too slowly
(and why I thought it was sometimes in fast and other times slow independent
of the drum rotor).

But no idea on the problem with slow (or in this case, OFF). The wiring in
the Leslie looks ok. The brown wires go to the larger motors and the white
wires go to the smaller (silver) motors (this is my first 2-speed Leslie,
previously I had a 51, so I'm not totally clear on the 2-motor situation).

When in the slow mode nothing happens (it looks like there is a moveable
drive shaft on the smaller motors that should engage the flywheel).

Is there a way to test the motors?

John



On 11/25/03 11:34 AM, "JohnC" <john at johncornicello.com> wrote:

> Update to the Leslie saga.
> 
> I removed the AC cord and switch from the Leslie amplifier and removed the
> protective sleeves from the Leslie connector.
> 
> I got an 1147 kit to run between the Roland VK8 and the Leslie.
> 
> The organ switch powers up the Leslie, but the volume is almost nothing
> (lack of preamp?). The volume level was fine when going direct from the
> organ to the Leslie via 1/4" cable when the Leslie had its own power cord.
> I've even take the 1/4" line out from the organ to the 1/4" on the Leslie
> (at the same time as using the 1147) with the same low volume. I was able to
> put a preamp in line there, but with a lot of distortion.
> 
> The speed switching also seems messed up. When I hit the Leslie speed switch
> on the keyboard I get either Fast or off on the drum rotor and either Slow
> or off on the horn. When the horn goes to off it is IMMEDIATE. No slow down,
> it just stops dead in its tracks. And there is some added hum. Anyone have
> thoughts on what/where to look at next?
> 
> Photos of the amp (before I removed the A/C cord and switch):
> http://www.johncornicello.com/leslie/147amp.html
> http://www.johncornicello.com/leslie/147amp-2.html
> 
> 
> Thanks!
> 
> JohnC
>