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Pvusers Archive for July 2002
62 messages, last added Tue Nov 26 17:28:48 2002

[Date Index][Thread Index]

Re: [pvusers] Inverters and Hammond tone wheel organs... etc.



On 19 Jul 2002 at 12:11, Michael Welch wrote:

> Scott Willing wrote at 01:09 PM 07/19/2002 -0500:
> 
> >Just joined the list, so without further adieu, something from left
> >field:
> >
> >Anyone on the list own a Hammond tone-wheel (B3, C3, C2 etc., 
> >preferably with Leslie as well) and power it with an inverter?
> >
> >Sorry if this is too obscure, I should really lurk a while first.
> 
> I have seen Hammonds (and everything else on stage and in the sound
> system) powered by both Trace SW series inverters and Exeltech N+1
> inverters at the Hog Farm Pignic concerts.
> 
> In trying to anticipate your underlying question, they worked just
> fine.

Bingo, the prize goes to you for perception, and thanks kindly for your 
reply and to others on the list for their responses as well.

In case anyone cares, the reason for the question is as follows: 

These particular organs generate tones from cams on a camshaft 
spinning over electromagnetic pickups. No other sound like it on earth, 
especially coupled with a Leslie speaker cabinet.

Anyway, the shaft is driven by a synchronous motor that locks to the 
incoming AC line waveform. It's fairly sensitive, and won't synch up 
unless the shaft is already spinning close to the right speed. (The thing 
actually has a starter motor - powering up is a ritual.)

I'm casting about for information on behalf of a friend who anticipates 
running a studio with captured photons. He happens to own a C3, 
which used to be mine <sniff>. We are wondering if "golden ears" 
mixers or players would notice a difference when using various inverti 
in a studio setting (i.e. where the noise floor isn't up to your waist).