[HAM] Leslie 25 - How-to add later multi-speed Leslie w/horns

[Dave Bishop]

Yes, you understood me correctly.  If you look at the 25 amp's schematic at 
www.captain-foldback.com it will be clearer to you that the same organ 
signal going to the 25 is passed along to the next 6W style Leslie.  You can 
also peruse the various styles of Hammond Tone Cabinets to see how the 
components differ.  The pin wiring for Hammond Tone Cabinets is not directly 
compatible with any of the Leslie cabinets.

The intent of using a 120VAC relay is to give the convenience of turning on 
the organ and the Leslie(s) using only the run switch on the organ to 
trigger a low-draw relay, which then engages the higher-draw Leslies without 
overloading the run switch.    You could always wire separate power cords to 
the Leslie amps, or put a second "Leslie power switch" in the back of the 
organ that intercepts power from the organ's power cord before it goes to 
the organ switches and directs it to the six-pin plug where the Leslie(s) 
normally get power. The Leslie relays sold at retail are slick, but kind of 
spendy.  They are easy to build, however, out of Home Depot and Radio Shack 
parts.

Regards,

Dave Bishop




----- Original Message ----- 
From: "Pete Dako" <petedako at gmail.com>
To: <hammond at zeni.net>
Sent: Monday, June 25, 2007 9:30 PM
Subject: Re: [HAM] Leslie 25 - How-to add later multi-speed Leslie w/horns


> Thanks very kindly Dave Bishop!
> I do indeed have the extra six pin socket on my 25's amp marked "speaker" 
> ***
> So if I understand you correctly I can take a 6W style cable and
> connect it to any other 6W Leslie, even one with it's own amp(s) such
> as the 145 i happened to see today?... that surprises me because I'd
> figure the 2nd Leslie's amp would be getting overloaded /too loud a
> signal.
>
> I googled 120VAC relay and figure I'll need to find a hammond tech or
> at least electrician to set that up ??? If a list member local to
> Toronto happens to have such a Leslie to sell me please drop me an
> eMail, Thanks PETE
>
> *** PS- there's also a 5 pin socket jack in the back of the organ
> which i think is for a
> Hammond Tone Cabinet.  Is the non-Leslie  Hammond Tone Cabinet similar
> to the amp/speakers already present in these Spinet style organ?
>
> Dave Bishop wrote:
> << As long as your second Leslie is a 6W style, its quite easy.
> << There should be an "extra speaker" six pin socket on the 25's amp,
> << to which you would attach the second Leslie's connector cable.
> << Your existing switches would work the same, although a two speed Leslie
> << would switch tremolo/chorale, rather than tremolo/stop.
>
> << The only caveat is that a 120VAC relay is recommended
> << to reduce the current flowing through the M101's run switch.
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