[HAM] ADDED INFO: Help Please? leslie 45 with 147 amp -

[Dave Bishop]

If its correctly wired for a 47 it should work for a 147.  The PR-40 may have been plugged in using the five pin male connector on the A-100's power amp, or it may have had a special Leslie connector box that allowed Main-Echo switching.  In either case, you'll need additional parts to add a 122 connection.  You need the means to impose a DC voltage on the signal wire to switch the 122 and you need to isolate the 147 from that same DC voltage.  You also need to verify that the Leslies are wired in phase to each other to run them together, and a power relay is recommended if you will be running both the 147 and 122 at once.  You can look at a site that shows how to build a "universal" Leslie connection box starting from a 122 connector box, if that would help:  http://www.tonewheel.com/adaptor.htm  Somewhere I have another schematic for a universal box authored by Bob S.

Regards,

Dave Bishop