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#2339561 - Yesterday at 05:37 PM Kawai MP7: Damper controller - bug or feature?
Banshee Offline
Junior Member

Registered: 09/11/14
Posts: 7
There is a certain behaviour concerning the MP7 damper pedal you might find irritating, but I am not sure whether it's a glitch in the firmware or intended somehow..:

Setup:
- Kawai MP7 v1.05
- Damper Pedal F-10H connected
- no other controllers connected (to keep the setup simple)
- Factory Reset + Panic (to start with a clean system)
- Drawbar mode with rotary enabled

Issue:
In Drawbar mode you can select the F-10H as controller to change the Leslie speed. Strangely however, the pedal will behave as a toggle switch when assigned to EFX1 and as a momentary switch if on EFX2!!


To test this, connect the pedal to the unit and if possible perform a full reset to be sure no other settings will influence this behaviour.
Then select DRAWBAR.
You will notice, the damper works as a sustain pedal right now. So go to EDIT, select 6.Controller and assign Slow/Fast to it.

Now if you press it, you will toggle between slow and fast speed of the Leslie, visible also on the lit or dark SW1.
Now change EFX1 to something non-rotary (this is important to shift the controller pedal to EFX2) and make sure EFX2 has rotary enabled. Verify in Controller menu that the pedal is on Slow/Fast again (it will most likely change when EFX1 changes as it was linked to it previously).

Now you will notice that the pedal momentarily switches from slow to fast rotary, if you press you go on fast, if you release, back on slow.

Now enable EFX1 and change it back to rotary without touching EFX2. The pedal again works toggling. Now even if you change EFX1 to something else, the pedal still keeps its toggling mode.
Now change EFX2 from Rotary to anything else and back to Rotary. Change the Controller back to Slow/Fast (if it lost it) and you notice the momentary behaviour again.


I'd say this is a firmware bug, but yet it could be quite useful if you want the momentary behaviour of the pedal.

However I would welcome it, if Kawai could probably use the Pedal mode (Normal/Hold) to edit this special behaviour instead of linking it somehow to EFX1 or EFX2...


Edited by Banshee (Yesterday at 05:38 PM)

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#2339704 - 34 minutes 6 seconds ago Re: Kawai MP7: Damper controller - bug or feature? [Re: Banshee]
Kawai James Online   content
9000 Post Club Member

Registered: 09/06/07
Posts: 9328
Loc: Hamamatsu, Japan
Banshee, thank you for posting this bug. I checked it with the MP7 engineer earlier and we were able to recreate the pedal behaviour by following your procedure.

Here is a little background information that I learned about EFX1/EFX2 and rotary speaker handling on the MP7.

1. When both EFX1 and EFX2 are set to a Rotary effect, the SW1/SW2 switch and F-30 left pedal can toggle the slow/fast mode of both effects simultaneously.

2. However, when assigned in the 6.Controllers menu, the F-10H can only toggle the EFX1 or EFX2 Rotary effect (i.e. not both). The reason is because 'Slow/Fast' is actually listed twice: once for EFX1, and once for EFX2. Unfortunately, the current OS does not clearly show which EFX slow/fast is assigned (due to limited LCD space), so this is something we need to consider in the future.

3. Prior to OS v1.02, controlling the slow/fast rotor using the F-10H was only possible by holding/releasing the pedal. The momentary switch toggle method was added with OS v1.02 (as one of the 'Various other operation/display improvements').

4. There is a minor bug in this momentary switch method, whereby if EFX1 is not set to Rotary, EFX2 slow/fast is not toggled correctly when the F-10H pedal is pressed.

------------

The bug mentioned in point 4 has now been fixed. If you would like to receive a beta version of this fixed MP7 OS, please send me a PM with your email address.

Thanks again for bringing this bug to our attention.

Kind regards,
James
x
_________________________
Employed by Kawai Japan, however the opinions I express are my own.
Nord Electro 3 fan & occasional rare groove player.

"Richard, none of us could forget you have a CLP-990." - EssBrace, 2014

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