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These are the archives from Mark Longo's original Hammond List, 1994-97



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Re: Re: question about a X77 Leslie



>> 
>> Hi all,
>>    has somebody replaced his X77 Leslie with a better one?.
>>  Is a exchange worth for example with a 122/760 Leslie?.
>>  Does somebody know the value of a used 122 or 760/770 Leslie in fair
>>  condition?
>> 
>>  The X77 Leslie has only an upper Rotor switchable fast/slow.
>>  The low frequencies will be paste through a scanner or a rotosonic
>>  drum (rotosonic drum single speed = fast rotation).
>> 
>>  My question are:
>>      - the cross-over for the Bass are around 600 Hz and
>>        for the upper Rotor are around 2500 Hz.
>>        (L=2mH in row for the Rotosonic/
>>         C=8uF in row for the Treble Speaker)
>>         Why this?
>> 
>>      -  is there a sound difference between a rotosonic and
>>         a fixed speaker with a drum?
>> 
>>    Thanks,
>>          Andreas                    Germany


>Why the high crossover?  Mostly because of the scanner(s) / Space 
>Generator (As Leslie called it).  I recently re did one and yanked the 
>scanner.  Routed the signals as Main and Leslie, and added a two speed 
>motor to the rotosonic.  Sounded good, especially if you used the "Harp" 
>and sent the percussion to tremolo (Which was the leslie and stationary 
>channels togeather, just on the perc tho').


Hi Ted,
 many thanks for you Information. I think this is a good solution.
I still have however two questions:
   
     - Where can i get the material for this solution? (220V/50Hz)
     
     - Have you replaced the cross-over-network in the X77 Leslie?

  Andreas Ringpfeil                             Germany/Nuernberg 



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