NRPN messages to/from the Sub 37

The Moog Forum Subsequent 37 & Subsequent 25
1

Hi guys, I came across this while reading the Sub 37’s manual:

“Since the Sub 37 has over 150 parameters saved with each sound, it is not possible to assign a standard MIDI
CC to every parameter. For complete MIDI output from every panel knob and button, you will need to set the
KNB NRPN/CC parameter to NRPN mode.”

I’ve been struggling to set the KNB NRPN/CC parameter to NRPN mode in Logic Pro X 10.1, and I’ve been doing some research on it, only to come to the conclusion that this isn’t clear how to be done in Logic at all…

It may seem as a noobie question, but I don’t get offended :slight_smile:
I’d really appreciate if somebody clarifies it for me.

Thank you

2

The KNB NRPN/CC parameter is in the menu of the Sub 37. Page 34 of my PDF manual says the parameter is under OUT FILTERS (MIDI MENU 3.3).

3

Thanks for the answer, I’ve tried it, but when I’m recording in Logic, and go to the parameters automation, the Value Range is still 0-127 (as in CC), and I’m trying to get to that NRPN because of the 0-16374 value range…

Maybe there’s something to be done within Logic, which I don’t get? :unamused:

4

If you’re looking for higher precision, you need to look at another setting: CC FORMAT (7-bit/14-bit). NRPN lets you access more parameters, but doesn’t increase the precision of the values. You don’t necessarily need NRPN for 14-bit precision.

Also explained on page 34 of my PDF manual:

CC FORMAT
Chooses if Continuous Controller data is sent using 7-bits or 14-bits (for greater precision).
If this level of MIDI precision is not needed, stay at 7-bit (default) as it uses up less MIDI bandwidth.

7 bits allow for 2^7 = 128 different values (0-127)
14 bits allow for 2^14 = 16384 different values (0-16383)

This setting is also in the OUT FILTERS menu.

The receiving MIDI device/software needs to support 14-bit values, but I believe Logic Pro X supports this. 14-bit values are actually sent as two 7-bit messages representing a single value. Sending 14-bit values requires sending twice the amount of data compared to the default 7-bit precision.

5

Alright, I’ve tried with 14 bits, but the value range get didn’t changed to 0-16383 in Logic :confused:



So this means the NRPN just lets you access more parameters, but doesn’t allow you to have more precision of the values and the greater precision (0-16383) is available when using CC only?

Can you or someone else please explain me how to access the NRPN parameters in Logic Pro X 10.1? :unamused: