hi Ed,
i read your question differently than the others
if what you are saying is that you want to upgrade to a modern system,
perhaps a Roland
and (specifically and importantly) emulate closely your current and long time squeeze (accorgan)
then
the Roland fr3, 3x, or 4x will do nicely with one main issue
they transmit Bellows expression, so you have to be squeezing to hear
anything from an organ or other sound expander mostly
for Organ of course this sucks, so i (and some others of us) use a device
from Micro Solutions that strips everything from the MIDI data coming from the Roland
except
note on note off
and then send the MIDI to any organ module of your choosing which
runs through it's own Volume Pedal
briefly, if you prefer a roland that works well and sounds nice
but is easy to learn to use, the FR3 or 3x is better
it has 10 accordions, well marked, easy to switch between, they sound
pretty good some even very good
the 4x is complex, bur rewarding if you don't mind learning it
both the fr3 and fr4 have MIDI outputs on the box, they work
fine with wired or Wireless MIDI systems
briefly, i use the Roland VK8m drawbar module, which has a jack
for an expression pedal that is independant of the audio out
then you would use the built in orchestral sounds of the Roland
or
add a second sound module, a GM device like a Sound Canvas,
and split the MIDI signal out to that.
(i say split because you DO want the bellows and velocity keyboard
info to go through to orchestral sounds)
both the FR3 and FR4 send velocity, so using an outboard module for
Piano, Guitar, Banjo etc. sounds works very well
the FR4 also can play it's own Guitars, Piano's etc., but the FR3 is more limited
for orchestral built in sounds
ps: Excaliburs suck.. they started as purely Chinese junk imported by Laabs ,
but it is ok to look for simple MIDI accordions that would also be an upgrade
for you, and easy to use with an Organ Module. Used MIDI accordions with simple
note on note off MIDI are usually under $2000 unless the accordion itself
is exceptional, like a Beltuna or something, but if you like the idea of being
complately wireless, go for the Roland as it can use batteries
pss: drum machines kinda died out as complex expanders got more popular,
so just look for a used one at a Music go Round for a hundred bucks or so..
Korg and Roland both made a ton of drum sidemen style machines
yeah i specifically built my system to emulate the Cordovox, in that i like to
have my Organ sound fully independant, then squeeze in the accordion on top of it if i want
or pedal the organ out as the accordion comes in
you will need a decent PA system of course, and at least one great 15" speaker
(if you want it to thunder like an Organ Accordion should)
ciao