[HAM] Miking up Leslies and other instruments Was:Adjusting

[goffmac747 at aol.com]

 Kon, There you have it. You have a grasp of what is needed and what can be done. In the interest of preserving the tone that Beer discovered or invented it would be a benefit. 

This reminds me of a story regarding Leo Fender. A Japanese luthier wanted to document what was it about Fender guitars that Leo had a keen sense. The Japanese luthier went to Leo's factory or shack in California where Leo started his ideas and if I remember right, slept there to absorb the air that Leo breathed in to try and figure out what contributed to Fender's creation of the most popular line of guitars in the world.


 
Getting a Beer organ and Leslie may take some doing, but the right analytical mind must be the one who goes out of his/her way to approach such an endeavor.


 

-----Original Message-----
From: Kon Zissis <kziss at ozemail.com.au>
To: hammond at zeni.net
Sent: Sun, 2 Sep 2007 10:34 am
Subject: [HAM]  Miking up Leslies and other instruments Was:Adjusting










Hi Goffmac747.
It would be very easy for me to measure the TG output levels of a TG
that has been recalibrated by Bill Beer and to then make up a TG output
curve graph and I would then instantly be able to see how the Bill Beer
TG output curves differed  from the stock Hammond TG curves.
 
A person who is competent in electronic circuits may well be able to
reverse engineer  his  circuits.
I am a hobbyist and if I had access to a Bill Beer organ preamp and high
power Leslie I would try to look at it but I don't know if I would have
the ability to properly reverse engineer it. 
 
However the  thing about the Bill Beer  products is the distinctive
sound quality so therefore what I would do is to carefully listen to and
analyse the tonal characteristics and I would feed a signal oscillator
or the output from a Hammond tone wheel generator into the Bill Beer
preamp or the power amplifier and then  record the all  output levels of
the different frequencies  coming out from the output of the preamp and
the power amp and then see how this compares  to the output  level
readings coming out from a stock  Hammond preamp and a Leslie amplifier
and I would also  feed the oscillator signal or the TG through a  normal
flat response  amplifier and measure  and write down the results . After
having done all the measurements I would then make up a response curve
graph and then compare the differences  in the  response curves of the
different amplifiers .
I could then experiment with tonal filtering circuits to  recreate a
similar tonal response as the Bill Beer  preamps or power amplifiers.
 
Bill Beer's  circuits would probably be considered out dated   by
today's technology but because it is the Bil Beer tonal response that I
am interested in instead of the actual Bill Beer electronic circuits, I
would try to recreate the  tonality with  by filtering  op amp circuits
rather than  try to reverse engineer  his complex and  undocumented
circuits. 
 
It may well turn out that the filtering that created the Bill Beer
sound was quite simple and because of this he went to great lengths to
keep the circuit a secret. 
All the best.
Kon       
 
 
Goffmac747 wrote:
Kon. there will always be purists. but who's to say you can't own a
hotrod while owning a Cadillac?
 
I wonder why no one has taken apart a Beer system and analyzed it? Even
if he took his secrets to the grave, there must be a way to reverse
engineer his work...Sorry Bill...
 
 
 
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