Send Program Change to Your Ketron

Let’s Take a Closer Look at a Program Change from OAX to Ketron

We heard back from some of you, and we owe you more details on how a program change and how other things work. We will circle back and dig deeper for folks that want to learn more in upcoming posts and videos. In this round, we show that we can send bank and program changes from our Wersi Sonic to our Ketron SD40. If you have a question, please respond via a comment to this post, and we will try to get you an answer.

Other videos on this topic:

  1. Basic cable connections
  2. An Overview of the SD40 Front Panel
  3. Basic MIDI Setup OAX / Ketron
  4. MIDI Configuration for 2 Keyboards and Multiple Sounds (Part 1 of 3)
  5. User Sounds to Control SD40 (Part2 of 3)
  6. Does All This MIDI Stuff Work? (Part 3 0f 3)
2 responses... add one

Hello Curt,
first I want to thank you for your videos around SD40. Although I live in Europe, I have no Ketron distributor in the area and I do not speak Italian, so and I find it difficult, as a potential customer, to find clear information on Ketron SD-products in relation to MIDI and connectivity.
In this video you refer to the SD40 technical data sheet, which I have also found on the Ketron web site. The list of voices is called “SD40 GM Voices” by Ketron. Now, in the same documentation, there is another list of sounds called “Voices Preset” (page 7-9). Does it mean that SD40 has 2 different sound generators, one which is GM-compatible, plus another one? I also ask myself how it is possible to access this second list of voices. For example the first 128 “Voices Presets” are accessible with CC=0 and BANK=0, which look like the same parameters as for the first 128 “GM voices”.
Actually when I look at the screenshot for MIDI settings, I do not understand why there is a button called “GM Part” and another one (the one you have used) called “Arranger Keyboard”.
I would appreciate your feedback on this,
Best regards,

Hey Darius, Excellent questions. I also found the use of “GM voices” a little confusing. I instantly thought of General MIDI – which isn’t the case based on the way things have been implemented in the SD40. Yes, it does follow GM mapping for an initial set of sounds.

You are correct; there are two sound cards in the SD40. Each has 16 independent channels. Now, there is one crucial difference. The second card, which maps to MIDI In2, allows access to additional banks.

MIDI In1 can access the “Voices Preset” section you mentioned – Those map to the layout of the voices in the screen. Things get more exciting and fun if you use MIDI In2. In addition to the five factory banks listed in the datasheet, you can also access banks 30-3x (User Sounds), 40-49 (Factory Styles) and 50-59 (User Styles).

Based on your comment I’m going to make a note to look into putting out a new video that would help explain the various banks and how to access – Thoughts?

Leave a Reply

Your email address will not be published. Required fields are marked *