Stage 4 compact keybed Fatar TP/8O very strong compared to a hammond waterfall

[Valpurgis]

Yes but that calibration is done to compensate for unevenness of keys/sensors, it won't change the mechanical feeling given by how hard/soft the springs are which is the OP point.

My point was that changing springs may(will) have consequences for this compensation. The difference in feeling compared to playing a B3 is also due to the much shorter length of TP/8O keys making the down force needed varying much more from the front of the keys to closer to the fallboard.

[maxpiano]

Yes but that calibration is done to compensate for unevenness of keys/sensors, it won't change the mechanical feeling given by how hard/soft the springs are which is the OP point.

My point was that changing springs may(will) have consequences for this compensation. The difference in feeling compared to playing a B3 is also due to the much shorter length of TP/8O keys making the down force needed varying much more from the front of the keys to closer to the fallboard.

Ah OK, yes you are right in that respect, Nord factory calibration will 99.9% likely become invalid with the new springs

[Heyjude]

Hi folks, I just wanted to chime in and mention that today I swapped my Electro springs for springs from an Maudio Keystation 61es. The action feels much better. I haven’t noticed any issues with the calibration as Nord set it. Im sure the new springs aren’t what Nord had in mind when they set the calibration but I’m very happy with the responsiveness since the change.

[Schorsch]

Hi folks, I just wanted to chime in and mention that today I swapped my Electro springs for springs from an Maudio Keystation 61es. The action feels much better. I haven’t noticed any issues with the calibration as Nord set it. Im sure the new springs aren’t what Nord had in mind when they set the calibration but I’m very happy with the responsiveness since the change.

I was thinking of this again and don’t think that calibration is related to the springs of the keybed since they will worn out and get smoother over time and when used extensively as I heard from others and also experienced by myself and is a natural thing. There must be people reporting issues coming from non-matching calibration after using a Nord for some years if the condition of the springs would affect it, but I never heard anything like this.

[maxpiano]

Hi folks, I just wanted to chime in and mention that today I swapped my Electro springs for springs from an Maudio Keystation 61es. The action feels much better. I haven’t noticed any issues with the calibration as Nord set it. Im sure the new springs aren’t what Nord had in mind when they set the calibration but I’m very happy with the responsiveness since the change.

I was thinking of this again and don’t think that calibration is related to the springs of the keybed since they will worn out and get smoother over time and when used extensively as I heard from others and also experienced by myself and is a natural thing. There must be people reporting issues coming from non-matching calibration after using a Nord for some years if the condition of the springs would affect it, but I never heard anything like this.

Well when we state that calibration is related also to springs the background thinking is: the springs affect the proportion between finger force and key velocity, so also the fastest physical velocity achievable (in normal play conditions), i.e. the min time between closure of the 2 contacts expected, which is what defines the level v=127 and so it is likely part of calibration.

Maybe/probably the difference is not that sensitive if the difference between sprigs isn't, but in any case changing the spring changes the mechanical response and so that keyboard is not exactly the same as when it was calibrated, even if this may not be a problem for most users (particularly those who change teh springs mainly to make it more Hammond-ish and Organ section doesn't care about velocity)

[Schorsch]

I get that, just think that even IF spring stiffness does impact the calibration results it does not make a noticeable difference since otherwise people would have reported something over the course of the years when the springs have become smoother since their condition changes based on how heavy and often the keyboard was used

[FZiegler]

In my eyes, changing springs could be an option if you mostly play organ with that keybed: The organ isn't velocity sensitive, so calibration shouldn't be that much of an issue.

It could be different if you want to play all sounds on those keys - but that isn't easy with the Compact's action anyway. And I've never tried to expressively play piano directly on the device.

Anyway, it would really be interesting to know if calibration is done at all on Compact keyboards.

[cgrafx]

it’s much more likely that the calibrations are related to where in the key travel the particular key switches are activated, as there are going to be variations. the calibration would be to even out differences that would occur as a result of those variations between keys, so that the velocity calculations are consistent across the keyboard.

meaning it likely doesn’t have anything to do with spring/key tension. so changing the springs wouldn’t make any difference.

[cphollis]

it’s much more likely that the calibrations are related to where in the key travel the particular key switches are activated, as there are going to be variations. the calibration would be to even out differences that would occur as a result of those variations between keys, so that the velocity calculations are consistent across the keyboard.

meaning it likely doesn’t have anything to do with spring/key tension. so changing the springs wouldn’t make any difference.

Agreed, the calibration is for sensor variability, not springs. It's also worth pointing out that the actions loosen up nicely after a few gigs. No, it's not as loose as a well-worn B3, but it's pretty good for various organ techniques.

[Schorsch]

@heydude from which version of the Maudio Keystation 61 did you took the springs off?