Re: Too much bass on C3

[Scott Hawthorn <shawthor@linknet.kitsap.lib.wa.us>]

Hi all,
        I have done this re-EQing myself and boy is it difficult! After
several tries, I've got it where I want it, i.e., *more* bass, but not so
much more that it does funny things to the foldback. Dave, could you give
us more detail on exactly which keys seem too loud? I find this subject
endlessly fascinating...
                                Scott Hawthorn


On Wed, 2 Apr 1997 GOFFProf@aol.com wrote:

> Dave Bently wrote: 
> 
> >  I've got a C3/Leslie 145 and despite having the tonewheel generator
> >  recalibrated the volume seems to increase slightly on the lower tones
> >  making the sound too bassy.>  
> 
> The factory tone generator EQ curve is far from flat. The lowest TG freq on a
> stock B-3 manual is #13, which can be heard full volume on C#2 with only the
> first brown DB out. C #2 and below to C #1 repeats or "foldsback" tones 13-25
> at less volume. When more DB's are out the tones are additive (with a tube
> preamp) so the organ EQ is *always* changing relative to itself on a specific
> hand position.  Foldback is one of several design characteristics in the
> organ which will foil all attempts at perfect TG EQ on any HAMMOND. This is
> the nature of the beast.   
> 
> Re-EQing a generator is not easy to do and requires a definite plan.  Dave
> Backus and other board members who have done this soon realized that the
> numerical readings are almost meaningless. They may get it in the ball park,
> but the job needs to be finished by ear with the Leslie attached. 
> 
> Al
>