FR8xb Uneven volume on push and pull

[Pipemajor]

I have been searching through past threads trying to find a solution to the uneven volume on push/pull on my newly acquired FR8xb.
I found a thread relating to this problem for the FR7 mentioning a "fix" with regards to the bellows sensors, but, unfortunately, didn't elaborate as to how the "fix" was performed. Moreover the thread is closed to further discussion, hence the reason for a new thread.
If anyone has knowledge of this "fix" and whether it also applies to the FR8 I would be most gratefull.
Any other suggestions with regard to uneven bellows pressure would be most welcome. Thanks all

 

[dunlustin]

For the 4x its under Trouble shooting, right at the end:
"The bellows exhibits an erratic behaviour"
Hope this helps

 

[John M]

You can try a bellows recalibration. It is on page 119 of the 8X manual. See attachment below.

 

[cestjeffici]

You can try a bellows recalibration. It is on page 119 of the 8X manual. See attachment below.

What else gets “recalibrated” when you do this?

 

[John M]

What else gets “recalibrated” when you do this?

As far as I know -- nothing -- I haven't done this, so I can't put a "guarantee" on this. From what I can tell, this is not like a "Factory Reset". Maybe Jerry or someone else will comment on this.

 

[dunlustin]

Maybe I should have said I've done this for the 1X and 4X - to good effect and no other observable effect.
It just does what it says.

 

[Ventura]

the original FR5/7 bellows sensor was a single unit for push and pull

as they developed the diatonic Roland, referenced in a recent thread,
they had to develop the distinction between push and pull, so they
designed a dual sensor (independent of each other) system

they thought this would allow a more sensitive more accurate bellows
sensitivity on the FR7x as it was being finalized and so implemented it..
however, they were too short sighted (lazy) to calibrate them as part
of assembly and testing, and so the first run of FR7x , essentially ALL needed bellows
re-calibration in the field, which is how it became available in subsequent
models and builds and reference manuals as an included and known "feature"

 

[Pipemajor]

What else gets “recalibrated” when you do this?

Well I've done the re-calibration, thanks to John M and Dunlustin for your help.
It seems to have cured the problem, but I notice now that the accordion sounds even with the bellows closed-not loud but noticeable.
I've performed the calibration 3 times, making sure that the bellows were firmly closed and no movement while updating but still the same.
Whether this will be a problem or not I'm not sure

 

[JerryPH]

I can't recall the exact name/location, but there is a volume setting (minimum bellows volume or something similar?), that one can play with, if that value is anything other than 0, there is going to be a note sounding even if you don't push or pull the bellows.

 

[Pipemajor]

I can't recall the exact name/location, but there is a volume setting (minimum bellows volume or something similar?), that one can play with, if that value is anything other than 0, there is going to be a note sounding even if you don't push or pull the bellows.

Thanks Jerry, I'll look into that

 

[cestjeffici]

Well I've done the re-calibration, thanks to John M and Dunlustin for your help.
It seems to have cured the problem, but I notice now that the accordion sounds even with the bellows closed-not loud but noticeable.
I've performed the calibration 3 times, making sure that the bellows were firmly closed and no movement while updating but still the same.
Whether this will be a problem or not I'm not sure

There is a setting called “Bellows Curve” It can be set to play the keys even with no bellows motion. I think those settings have the word “fixed” in them. Try setting the Bellows curve to “Standard” and see if that works. This is a setting you have to save before you turn the accordion off.

 

[Pipemajor]

There is a setting called “Bellows Curve” It can be set to play the keys even with no bellows motion. I think those settings have the word “fixed” in them. Try setting the Bellows curve to “Standard” and see if that works. This is a setting you have to save before you turn the accordion off.

Thanks cestjeffici, I'll give it a try. Strangely, there was no sound before I did the re-calibration, so it must have changed something.

 

[Pipemajor]

I can't recall the exact name/location, but there is a volume setting (minimum bellows volume or something similar?), that one can play with, if that value is anything other than 0, there is going to be a note sounding even if you don't push or pull the bellows.

You hit the nail on the head Jerry
I reset the min, volume setting to zero and the noises have now stopped