Add A Tenth Set Of Contacts

MikeFulk in a post to TheHammondForum has pointed out:

On M-100's and L-100's the actuators on both manuals have ten slots instead of nine. There are no contacts or busbar for the 10th slot(s), but think of the things one might do, e.g.:

• Key just about anything

  • MIDI (non-velocity-sensitive)
  • percussion keying

• add separate 13 contacts and short busbar so that pedals may be on manuals, add sub-third or sub-fundamental harmonic on lower manual... also, on lower manual add both sub-third and sub-fund by rewiring 10th and twelfth harmonics.

Apparently not all M-100's lend themselves to decibusification. An anonymous editor adds~:

  L-100s may have 10 slots in the actuators, 10 slots for busbars and 10 slots for contacts, but
  not _all_ M-100s have this "feature".

  In M-100s, there may be ten slots in the actuators.
  There may also be a tenth slot for a busbar but no insulated guide for that slot.
  *And* the contact boards have only *nine* slots.
  Based on my experience with an M-101 and an M-111.

TopicModification

I am the anonymous editor who added the above comment.

I know little about this site and/or how to log in and/or enter a password. I tried but, to no avail.

I am Alan P. ?DuBois and I work with Hammonds. freshairband@limo.net

To add further to my above comment:

I have worked with many M100-series manual chassis. NONE of the *M100* chassis I have worked with will accomodate 10 busbar contacts.

I have also worked with many L100 manual chassis. The ONLY L100 manual chassis I have found that will accept 10 drawbar contacts is the L133.

This particular L133 manual chassis I speak of is of different design than any other Hammond chassis I have seen. The actuators, contact boards and terminal strip are ALL made of plastic - Hammond chassis usually have bakelite boards, etc., - interesting....

I added foldback to this particular chassis and I sold it - so I cannot give any more particulars about this "unique" chassis. I do have a photo of the backside of this L133 chassis but I have no idea how to post it here.

I can only agree with the original post in that the ACTUATORS for M, L100s DO have 10 slots. BUT, regarding adding a tenth contact, not all the L, and/or M100 chassis have slots for 10 contacts!

All I can say is, beware of buying an M-, or L-100 with hopes of adding a 10th set of contacts and/or a 10th busbar. You should find out what's inside the chassis before you buy!

Thanx, Alan