OAX / Ketron Two Manual / Configuration

Let’s take the next step. In an earlier video, we showed that we were able to play styles and sounds from an external MIDI device (in our case a Ketron SD40) from the upper manual of our Sonic.

While that is interesting I’m sure most folks that own a Sonic would prefer to play not only the upper keyboard but most likely the lower keyboard and the pedals – You know, like a real organ!

In our next video, we are going to scratch the surface of how you can play both keyboards of the Sonic and play sounds and styles in the Ketron. In future videos, we will build on that solution and add in Wersi sounds with the Ketron sounds.

16 thoughts on “OAX / Ketron Two Manual / Configuration

  • 01/21/2019 at 11:35
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    Hi Curt and Jerry,

    I think the best solution to the MIDI channel conflict in Kontakt would be to use the OAX dynamic system of channel assignment (sys mode). To handle this we need 16 identical instrument banks in Kontakt, one for each MIDI channel, then it doesn’t matter what MIDI channel has been assigned. There will never be a channel conflict, and you can layer as many Kontakt sounds together as you like. It’s also a very efficient use of the 128 external MIDI sound codes, as you only need one code per sound. With fixed channel assignment, when a conflict occurs we would have to create another copy of the sound with a different MIDI channel, and this uses up more of the sound codes.

    The downside to this is that with 16 heavily populated instrument banks, the load time before Kontakt is operational can be significant. Kontakt reads most of its samples from disk, but initially loads a small set of these samples into a buffer in RAM so that when a note is pressed the sound is instantaneous. The size of this buffer depends on the virtual instrument, but with some of the more complex sounds this can be large. (We can override the instrument setting for this buffer size and set a smaller global one of our own if we choose). These samples have to be loaded into each slot in each instrument bank, so if Kontakt is set to be the default VST, this can slow down the startup of OAX. I recall Curt that you did some experimenting with a subset of instrument banks and a small number of sounds, and we saw this effect. We would expect the same delay effect to also occur if we chose to load Kontakt whilst performing.

    With an external processor there’s no problem since both this and the instrument can be booted up concurrently. Mac systems have a very fast boot up, my Mac mini loads its operating system and applications software in less than 15 seconds, at which time the OAS is only just getting started!!

    Jeff

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  • 01/21/2019 at 06:53
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    For folks that might not be aware of what Jerry is talking about… If you select two sounds that are assigned to the same MIDI channel OAX it will pop up a message notifying you that it is “turning off” one of the sounds. You really don’t have a chance to back out. The only option is to click “OK.”

    We will show you an example of the message in the next series of videos.

    Jerry – I have no issue with your solution. When I did have Kontakt running, we ran into that issue and never had a good solution.

    Reply
  • 01/19/2019 at 15:48
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    After 15 months of stress and hours of work trying to get my OAX communicating with my SD40 I have finally had success. I had a faulty Midi control board in my Wersi. We are now operational.
    Thanks very much Curt for your help, dedication and video presentations. This would not have been possible without you help.

    Reply
  • 01/19/2019 at 11:49
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    Hello Curt,

    Why use both MidiOut for connecting the Ketron to OAX ?

    It can be done with only one MidiOut when you assign KetronUpper-sound to fixed MidiChannel 1,
    and KetronLower-sound to fixed MidiChannel 2.

    On the Ketronside, use the MidiIn-(Keyb). Setup the Ketron to recieve Upper on Channel 1, and Lower on Channel 2.

    For Upper, instead of recalling Ketron GM-Sounds, you can recall the Ketron Voices Presets.
    This way, the Ketron can play a VoicePreset witch sound much better then the GM-Voices.

    Regards,
    Carlo

    Reply
    • 01/19/2019 at 13:19
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      Carlo – I know we have some Ketron owners out there following along so if they are interested we will give this a go and share it for those folks. I think the issue will be that you can only select one voice from the Ketron in that config? OAX won’t allow us to use MIDI Ch1 twice on the same MIDI port. For example, if we want to assign Ketron Tenor Sax to Upper 1 and also Ketron Trombone to Upper 2. Of course, one option would be to use the Trombone from OAX on Upper 2 instead which would select a dynamic MIDI channel and not give us a conflict.

      You do bring up a good point regarding the voice selection though.

      For our Ketron friends – Are you interested in seeing the above config setup and taking it for a test drive?

      Reply
      • 01/19/2019 at 22:45
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        Hello Curt,

        Why use multiple Midi-Voices on the OAX, while in a Ketron VoicePreset you can layer up to 4 Voices, each with his own settings ?
        With only one OAX Midi-Voice, it’s possible to recall up to 4 Voices on the Ketron.

        For me, using a second Midi-In to combine Ketron GM-Voices is a waste of the OAX Soundpool.

        Regards,
        Carlo

        Reply
        • 01/20/2019 at 06:30
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          Carlo – I agree with that and didn’t plan on showing that option but maybe we should. For me, I would only use a single Ketron sound at a time vs. multiple sounds at the same time. I know there are some folks that prefer to stack voices together and that is where there are “options” on how to handle that between OAX and Ketron.

          Probably a good topic to explore a little further so we will add that to the list of things to cover in the near future.

          Out of interest which Ketron are you using?

          Reply
          • 01/20/2019 at 15:19
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            Hello Curt,

            That would indeed be a good topic to explain.
            I use the SD40 together with my OAX1-Duo.
            I have also vArranger with all his Soundbanks available running on the OAX1. With a second TouchScreen placed above on the NoteStander.
            Have also a Audya 4, witch i use to play with Roland FR7-accordion.
            Further, a OAS Louvre, also with vArranger running on it…
            And a Wersi Xenios…
            Enough to keep me busy…

            Regards,
            Carlo

        • 01/21/2019 at 06:34
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          Carlo – Yep, you have a very nice collection! I’ve looked at vArranger in the past but have not had a chance to demo it. An interesting product. Since you have it installed on multiple instruments I’m guessing you like it?

          I might ask you a few questions as we show some things in the next few videos to see how you configure in vArranger to do similar things.

          Reply
        • 01/20/2019 at 13:54
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          Agreed Jim – Could be a very interesting topic and I look forward to learning from others on how they set things up. Spending the afternoon messing with some different configurations to see what I learn.

          If you smell smoke or hear a big bang don’t be concerned – Only me fooling around! 🙂

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      • 01/20/2019 at 15:10
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        Yep I am very interested with being able to save and stack the Ketron premium sounds on the Wersi. Surely the Ketron is designed to do this, might be time for Curt to have a chat to Mr AJ?

        Reply
        • 01/21/2019 at 06:56
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          Ross – AJ and have had many discussions on the internal routing of MIDI data. They (Ketron) made some design choices for the product line and we have some options to work with those choices. Some are OK, some I’m not a fan of.

          Reply
    • 01/19/2019 at 15:43
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      Yes I agree we need access to the Ketron Voice presets. Is this not possible using the 2 Midi cable config?
      Hopefully Curt will have a trump card up his sleeve and all will be revealed!

      Reply
      • 01/20/2019 at 06:37
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        Ross – No magic hidden up my sleeve but based on feedback from Carlo and I know you are interested in the topic we will take a look at a couple of ways of doing this and then folks can pick what works best for them.

        Jerry P. – I’m guessing you are following along. How do you handle addressing multiple sounds / MIDI channels with Kontakt as it presents a similar issue?

        Reply
        • 01/20/2019 at 23:41
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          I have 6 instrument banks loaded in Kontakt midi channels 1 thru 6. Each instrument bank has 128 slots to load sounds however you only have a total of 128 available sounds no matter how many instrument banks you have. I have loaded about 50 of my own sounds and probably will not need 128. I have all 50 sounds loaded in the first 3 instrument banks which are midi channels 1, 2, and 3. When there is a conflict then I just load the sound in one of the other 3 banks. For example I have a flute in slot 001 of the instrument bank on midi channel 1 and I am using some factory sounds that has midi channels 1, 2 and 3 tied up. Then I just load the same flute in one of the other 3 banks in slot 001. So far 6 banks have been enough for any conflicts I’ve had.

          Reply

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