[HAM] M3 help...thanks

[Bohachewsky, Andrew V.]

If you're able to compare a console with the M it would be obvious.

Some points: the lowest four harmonic drawbars (and the most commonly
used ones) go all the way up the keyboard (the fourth maybe not to the
last C?). Drawbars beyond that run out of tone generator tones. On the
spinets these are left with no connection, on consoles a tone generator
tone an octave lower is used.

The very highest drawbar stops playing at the second to lowest F (full
octave and a half missing). 

On an M3 the highest drawbar is used for percussion triggering and
therefore actually has a long bus bar and a contact on all keys. Look up
"poor man's foldback", easy way to get that last drawbar which is useful
for "gospel" registration like 888000008 or 800000008.

Whether foldback is useful depends on the drawbar settings you use, if
you're into the sound of all drawbars out it'll definitely thicken the
sound! If you mainly use 888000000 you won't hear a difference.

This procedure can be a bear, especially with the M3 which used "shorty"
busbars for the drawbars that "disappear", those will need to be
replaced with full length ones and you need to add all the missing
contacts to the key switch stack, and then solder each of them to the
correct tone generator output.

I should be in possession of a "foldedback" M100 shortly and can give
you more subjective details on the sound then.

Andy



-----Original Message-----
From: hammond-bounces at zeni.net [mailto:hammond-bounces at zeni.net] On
Behalf Of Aaron Johnson
Sent: Wednesday, May 09, 2007 11:12 AM
To: hammond at zeni.net
Subject: [HAM] M3 help...thanks

I appreciate the input on my "new" M3.  I've decided not to chop it and
have been investigating trailer options.  Thanks.
   
  Another question:  Foldback.  Exactly what is it and is it worth
making the modification on the M3?  My understanding is that it will
make the high end bigger???
   
  Aaron

 
---------------------------------
Never miss an email again!
Yahoo! Toolbar alerts you the instant new Mail arrives. Check it out.
--
Subscription Options/Unsubscribe/Archives: http://www.zeni.net/hf/
Hammond-Leslie FAQ: http://theatreorgans.com/hammond/faq/
HammondWiki: http://www.dairiki.org/HammondWiki/
hammond at zk3.dec.com archives: http://zk3.hammondforum.com/