Re: [newmellotrongroup] Re: CMC4....Motor Control Units
2007-12-04 by jkorb@ix.netcom.com
-----Original Message----- >From: tomdcour <tomdcour@amnh.org> >Sent: Dec 4, 2007 8:56 AM >To: newmellotrongroup@yahoogroups.com >Subject: [newmellotrongroup] Re: CMC4 > >---Yes I will, it's in another computer photo library so I apologize for the delay. >Mine is a servo motor 2 that was installes in the 70's by Sound Sales- maybe yours is >different and doesn't employ the tape head. Any one else on the list know what I'm talking >about? > > > In newmellotrongroup@yahoogroups.com, "tomdcour" <tomdcour@...> wrote: >> >> Yes indeed--- In newmellotrongroup@yahoogroups.com, "tomdcour" <tomdcour@> >> wrote: >> > >> > ---I'm not an "expert" but I had trouble with my servo at one point, giving the wobble >> > effect you describe. I cleaned the tape head that was reading sync information off the >> > motor gear- it was absolutely covered with crap. After that my tron limped along >> famously >> > for years before Mr. Korb completely healed it. BTW I think I have cmc2 on #390 _______________________________________________________________________________________ Season's Greetings Tom and Fellow Mellotronists, Your M400 #390 has an SMS2 card within it. "Servo Motor System" . Unmodified M400's were fitted with the CMC10 . "Capstan Motor Control." SFX and M300 models and a few of the first M400's had the CMC4 within. The SMS series is simply the best, the CMC-10 simply the worst (wurst, "porkers"). And the CMC4 falls in-between. For those here who haven't seen the first-generation pitch contol, it was the VFO. To put it succintly, about 30 lb. of electronic bits needed to control a 4-5 lb AC motor . Cheers, -- JK --