[sdiy] Clavinova MIDI problem

Tom Wiltshire tom at electricdruid.net
Fri Jul 19 12:51:21 CEST 2013

Hi John,

Are you using the "Bulk Data Format for Organ Combination" on Pg 52 of the manual?

Isn't it possible using control changes?



On 18 Jul 2013, at 20:34, John Speth <jspeth at avnera.com> wrote:

> Hi folks-
> I'm trying to make a MIDI editor for the Yamaha Clavinova CLP-611's Organ
> Combination instrument.  About a dozen or so Hammond organ parameters are
> sent using sysex dumps to change the patch, one dump for all parameters,
> about 40 bytes.  Those parameters include tone drawbar, attack, and leslie
> settings.  My editor is written and debugged but I have one major problem:
> The only parameters that apparently change are the leslie speed and depth
> values.  All other parameters are never changed (sound won't change) no
> matter what.  The fact that the leslie settings are changing tells me that
> the data is properly formatted.
> Does anyone have any experience with MIDI communication with the Clavinova
> series that can give me good advice on how to manipulate all parameters?
> Google is a dead end: just turns up one user manual download page after
> another.
> Thanks, JJS
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