From bruce@ashbysolutions.com Wed Feb 15 13:51:49 2006
Subject:Re: Leslie 2101 - stationary channel question

Hi,

Yes, but the effect was more subtle, and quite surprising, given that the keyboard amp and Leslie were on opposite walls, about 20 feet apart!

Regards,

-BW

--
Bruce Wahler
Design Consultant
Ashby Solutions™ http://consult.ashbysolutions.com
978.386.7389 voice/fax
bruce@ashbysolutions.com

At 09:38 PM 2/15/2006 +0000, you wrote:
>kinda like singing into a fan?
>
>--- In CloneWheel@yahoogroups.com, Bruce Wahler wrote:
>>
>> Hi Jay,
>>
>> >Anyway, here the wierd thing I noticed. If the Leslie is set on
>> >fast, there's a slight warble in the sound through the stationary
>> >channel. It seems most apparent aroung F# above middle C but it's
>> >always there. Probably resonant around that frequency. According to
>> >the 2101 schematic the stationary signal doesn't go through the rotor
>> >simulator so it shouldn't be effected by whether the leslie is slow,
>> >fast or stopped. It's not a show stopper because by taking the
>> >Leslie off fast the sound is fine. I'm wondering if anyone else
>> >experienced this or may have an explaination. (The only thing I can
>> >think of is that perhaps the moving air from the rotor is subtley
>> >effecting the sound coming out of the small speakers.)
>>
>> That's EXACTLY what's happening. I had the same problem a couple of
>years ago with my setup, which includes a real Leslie. I kept hearing
>"vibrato" from my piano sounds, even though I went painstakingly
>through the settings for the sound to make sure that there was no LFO
>modulation anywhere. I finally figured it out: The Leslie and the
>keyboard amp were sitting across the room from each other, and the
>Leslie was actually modulating the sound by pushing air around!
>>
>> Regards,
>>
>> -BW
>>
>> --
>> Bruce Wahler
>> Design Consultant
>> Ashby Solutions™ http://consult.ashbysolutions.com
>> 978.386.7389 voice/fax
>> bruce@...
>>
>> [Non-text portions of this message have been removed]
>>
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