Re: 760 Leslie

[Jason Staczek <jastaman@pobox.com>]

So, Al, how do you get all 60 tube watts to the horn on the 122? I 
thought I heard voodoo about removing the 15" from the circuit causing 
crossover points to move and no end of trouble. Or does the tube amp 
get fed from the new active x-over and the passive one's out of the picture?

Jason

GOFFProf@aol.com wrote:
> 
> Darcy--- As Bob S. said, the 760 and 122 cabinets are virtually identical.
>  It's a waste of time looking for more bass in this conversion.  The real
> difference in bass is in power handling as the solid-state amp and  4 ohm
> woofer combination develops more power and more bass than a tube amp.  If you
> REALLY want more bass, add a $5 line out jack on the organ (G-GND Terminals)
> with a 10K pot to attenuate the preamp drive. Ground the end term and the
> frame of the 1/4" jack to eliminate hum.
> 
> Then--- jack the line out from the organ into an EQ and bass amp / speakers.
>  Roll off the bass to whatever freq you want, turn the bass amp up as high as
> you can stand it, and PLAY! You'd be surprised how many organsts do this.  We
> are adding a new powered sub-woofer in a carpeted cabinet to one of our
> touring bands' setup. The 122 will sit on the sub-woofer and have added an
> "active"  custom crossover which sends the low bass to either one or two 18"
> woofers, depending upon what they want.
> 
> This solved a long standing live-stage volume problem.  The upper 60 watt
> horn is plenty loud, especially since the tube amp doesn't have to handle the
> low bass and can be turned up with much less distortion.
> 
> A Line-Out gives your Leslie a rest, makes our jobs as techs easier, and is
> CHEAP for you.
> 
> (BTW, your "test" kit is ready. Let me know what address it should go to VIA
> Airmail.)
> 
> Al