The large Coinolas have a 'swell' system.  On the right hand
side on the 'Coinola coding', the highest note is 'A', then the
Tambourine, next is the 'Swell', the last being the 'Crash' cymbal.

I would like to ask how the swell system is operated; is it the
shutters opening and/or an increase of vacuum?  I have been making
perforations similar to the sustaining pedal for the duration of
the 'swell' feature.  Hopefully this is okay.  Some advice on this
would be welcome.

Steve Bentley - SB-"O" Rolls
Vancouver, B.C., Canada