Lexicon MC-12

You may have stuck yourself into a corner with this one.  Not even remotes.com appears to have a pre-programmed remote (though you could call and ask them).  Best I can see is that there is a Lexicon MC-12b on ebay *for parts or repair* that is listed for $350 or best offer plus $158 shipping.  This has the remote and manual.  Obviously, it is another several hundred dollars, but it may be your best bet unless some other Lexicon expert responds here.

Thank you. I also saw that on Ebay. Logitech Harmony is listed as working with the mc-12, but if I dont need the remote, I actually dont mind getting up off my rear and accessing the panel. Just cannot figure out how this thing works. I downloaded the manual but everything is written as if you are using the remote.

It looks like remote central has codes for it. You should be able to get a Harmony remote or something similar and program it. Try searching the harmony forums and see if there are already codes for it.

Just very recently sold my very very nice MC12B with all the accessories. I can tell you that a remote is highly desirable in setting up the unit. It can be done on front 
Panel (as far as I know) but it's nearly impossible and cumbersome in the extreme. I tried once and failed miserably. Just wanted to change a speaker distance. And i was very familiar with the menu and manual. In its day it was highly sophisticated and has many menu and setting levels. I do NOT recommend attempting to set up this unit from front panel you can really screw the pooch so to speak in a heartbeat. My suggestion to you is to find yourself a remote and read the entire manual at least 3X. Its a very thick manual. Use the OSD which will simplify you setup immensely. Once you accomplish that you'll be surprised by what this processor can do.
Hope this helps!