Leslie stuff

[Doug Tymofichuk]

On Fri, 06 Aug 1999 04:37:01 -0400 harry bissell 
<harrybissell at prodigy.net> wrote:

 Problems include isolation of the mechanical
> noise from the microphone, the fact that the enclosure is too small to
> suport bass wavelengths without seroius standing wave problems... Signal
> level problems (you'll want the speaker to be loud and in a small box
> that's trouble... Also, the room makes a big contribution to the sound.
> Most leslies have two separate motors, one on a horn assy for the highs
> and a big rotating drum for the lows. Different speeds and phase
> relationships (and rates of change) contribute to the sound.
> 
> As someone pointed out, the actual "move the speaker on an arm" is never
> done in practice. The best implentations of the low end use a drum with
> an angled baffle with a hole facing out one side. An interesting unit
> had the rotor made from molded styrofoam... The horn units can use a std
> compression driver.
> 
> Don't use slip rings....

Aw Harry, your doses of reality can be so depressing! ;-)

I'm not attemting to "duplicate" the sound of a classic 
Leslie so much as trying to get the treble part of the 
phase/level change sound. Bass is not an issue, so size is 
not so important. I don't know if room contributions are 
significant for me until I hear what it sounds like without 
them. 

The slip rings are something that I have on hand, so I 
think it would be worth the experimentation. Thanks for the 
list of possible pitfalls, though!
----------------------
Doug Tymofichuk
dougt at cancerboard.ab.ca