Setting up the EXTERNAL INSTRUMENT function in Cubase 5

The External Instrument function is a VST CONNECTIONS feature of Cubase 5 that allows you to route MIDI tracks recorded in Cubase 5 to an external hardware synthesizer, and then create a MIDI Device routing so that the returning audio of that external device can be captured in Cubase. (Of course, this all takes place with Cubase’s advanced delay compensation, automatically). This is covered in the Steinberg documentation - I have include it below updated with specifics to help you setup for the Motif XS. (And although this article and it screen shots show the Motif XS (keyboard), the same can be used to configure the Motif-Rack XS using its dedicated Studio Manager Editor).

The source MIDI tracks for the External Instrument must be in CUBASE. That is, if you originally recorded the data in the Motif XS, you will want to export that data so that the MIDI tracks are in Cubase (Cubase can import Motif XS SONG data from within an ALL data file)… see separate article.

EXTERNAL INSTRUMENT
Cubase 5 has the ability to setup your hardware synthesizer as an EXTERNAL INSTRUMENT. This is found in DEVICES > VST CONNECTIONS as one of the tabs. It allows you to create an audio pathway in the DAW so that you can address your external hardware with the same ease and flexibility you do VSTi within the computer environment. This means you can use track automation, Audio Mixdown and the FREEZE function (although it takes place in real time) that until now were just for VSTi soft-synths created within the computer.

Basically MIDI is going to travel from Cubase MIDI Tracks to the Motif XS tone generator, the audio created by this MIDI data is then returned to Cubase on multiple VST CONNECTION audio lanes that we will create. There are 16 simultaneous buses that we can route this returning audio. And unlike the Motif XS VST Editor, you will not be limited to just 8 stereo pairs. You can create various combinations of mono and/or stereo buses, as required by your particular session.

_ First you need to set the Motif XS up as an External Instrument Plug-in (VSTi) within Cubase 5 (this will also work in Cubase SX3.1.1, Cubase 4 or Nuendo 3.2 (or later) - we will step you through this process.
_ Then you can associate it with a “MIDI DEVICE”, in this case: the Studio Manager and the Motif XS Editor V1.3.0 .
_ Then you can route your Cubase MIDI tracks to Motif XS Editor (this is done via the Cubase MIDI Track’s Track Inspector… Instead of routing the MIDI OUT to the normal Motif XS port, you will see another Motif XS (VSTi) port that will represent the External Instrument routing).
_ Finally select the Motif XS Editor as a VSTi (which creates an audio lane for each RETURN you create).

Note: In the Studio Manager version of the Motif XS Editor, you will want to set the mLAN MONITOR function to “with PC”. When you routing is setup properly this will allow you to listen to your Motif XS through Cubase and prevent doubling of audio signal.

The following is taken from the detailed descriptions for the External Instrument features in the Cubase documentation PDFs and has been updated (by me) for use with a Motif XS with mLAN/Firewire. It assumes you have setup Studio Manager and the Motif XS Editor to run within Cubase 5.
DEVICES > STUDIO MANAGER

Here you would add the Motif XS Editor…
Setup your Workspace for this Project (include all your hardware that has an associated Editor for this project)
Ensure your MIDI port assignments within the EDITOR are correct for each device…
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Setting up External Instruments
1. Open the VST Connections window from the Devices menu.

2. Open the External Instrument tab and click “Add External Instrument”.

3. In the dialog that appears, specify the number of required mono and/or stereo returns.

A specific number of mono and/or stereo return channels is required. You will have to determine how many mono and/or stereo returns you want to have from your Motif XS. You can create a simple stereo mix or you can get elaborate and route individual MIDI tracks each on their own path - this allows you to process each audio path with Cubase automation, and VST Effects, etc.

If you have mLAN, you can have any combination you require (14 mono, 7 stereo, or a mix of each or simply a stereo return). This is up to you… and is customizable on a per session basis. For example, there is hardly ever a need to record every audio track as stereo, or for that matter, there is hardly ever a cause to record each track as mono, so I find that I have several setups that I store as Favorites and I adjust this as necessary on a per Project basis. Once you understand it, it is, like everything, fairly easy and straightforward to customize.

Say you may want to record everything to a single stereo mix.
You would setup the VST CONNECTIONS > External Instrument tabs as follows:

For example, this would be if you have pre-mixed your Motif XS tracks and only require a stereo mix of the entire Motif XS. The point is you can do a simple stereo mix, or you can create an audio path for each track… this is up to you.

4. Click OK. This adds a new external instrument bus.

5. Click in the Device Port column for the Return Bus “Left” and “Right” ports and select the inputs on your audio hardware to which you connected the external instrument.

Here you are assigning the appropriate AUDIO DEVICE and DEVICE PORTS to accommodate your particular setup. If, for example, you have just the Motif XS going through via mLAN before going to the DAW… you would set the Returns to “ASIO mLAN” Ports ... as necessary. You can set as many audio Returns as you require: For example, a simple mix could be just a stereo L&R pair – or you can get very elaborate and create an audio path for each track in turn. (Note: If you have installed the “Yamaha Motif XS Extensions v1.5.0” the Motif XS ports will be conveniently identified by name). If you are using the Yamaha Steinberg FW Driver the AUDIO DEVICE would be identified as “Yamaha Steinberg FW”, not as “ASIO mLAN”.

6. If you like, make additional settings for the bus.

These are found in the columns to the right. Note however that you can adjust these while actually using the external instrument – which may be easier as you can hear the result.

In the column called “MIDI Device” where it currently says “NO LINK” - set it to open STUDIO MANAGER > Motif XS

7. When you are done, close the VST Connections window.

If a port is unavailable for assignment (that is, it does not appear on your list), this is because you are using it somewhere else in your setup. Check the VST INPUT tab and release it (i.e., set it to Not Connected), if you require it for your External Instrument.

How to use the External Instrument
Once you have set up the External Instrument in the VST Connections window, you can use it as a VST Instrument.

Open the VST Instruments window and click on an empty instrument slot. This is found under DEVICES > VST INSTRUMENT (F11)

In the instrument pop-up menu, your external instrument is listed on the External Instruments
submenu: X-External Plug-ins “Motif XS”

Now when you setup a Cubase MIDI Track, the Track Inspector will be setup with the normal mLAN MIDI Port for INPUT, but the MIDI OUT must be routed to new “Motif XS(Motif XS)” device --- which is now listed where your VST instruments would be listed. Make sure you re-assign the MIDI OUT to this new External VSTi listing of the “Motif XS(Motif XS)” for each MIDI OUT Track.

You are sending the MIDI OUT from the track to the Motif XS Editor, the Editor is controlling the Motif XS.

All of this will be saved in your .CPR or .NPR file when save your Cubase/Nuendo Project. When you re-open the session, you will be asked if you want to RECALL this setup (see Studio Connections RECALL article for details on this).

Shown below (the External Instrument screen) is an example with 7 stereo returns and 14 mono returns coming from the Motif XS. This covers every possible configuration possible from a Motif XS with an mLAN16E2 installed. I use this because I can configure whatever possibility I need to accomplish my goal per Project. The setup will remain as part of my Cubase4 setup. The External Instrument “Motif XS” is linked to the Motif XS Editor (“MIDI Device).

This can be stored as a setup and recalled and reconfigured as necessary, for any Project. You will discover that on different projects you may need a particular number of stereo bus returns, and a particular number of mono bus returns. With this setup I can assign “ASIO mLAN” as the Audio Device, and then assign the Motif XS mLAN Device Port number as necessary. Shown is, Return Bus 1 is set to receive audio via “m1&2” from the Motif XS.

The individual OUTPUT SELECT assignments are made in the Motif XS.
Actually assigning XS PARTS to output buses can be carried out with the Motif XS Editor “OUTPUT SELECT” or from the front panel of the XS itself, where it is a PART Edit parameter.
Set the OUTPUT SELECT, as necessary.
Press [MIXING]
Press [EDIT]
Press Track Select [1]-[16]
Press [F1] VOICE
Press [SF2] OUTPUT
OUTPUT SELECT = L&R (main outs), m1&2 - m13&14 (stereo pairs), m1 - m14 (individual mono), drum (from DrumVoice setup).

You can route individual drums from within a Drum Kit Voice to various assignable outputs. This can be accomplished via the Motif XS Editor without leaving the MIXING mode. Routing individual drums can be very powerful for those sessions where you are going all out. The kick to its own MONO track, the snare to its own MONO track, etc. This is accommodated from within a single kit by setting the PART containing the DRUM KIT so that OUTPUT SELECT = “drum”. This allows the XS to route each individual drum instrument to its own output bus. Very Cool!

You can route any PART as a stereo or mono output, as you require to accomplish your goal. Multiple outputs can be used simultaneously. On the VST INSTRUMENT tab you can activate any combination of Returns, as necessary. Just to the right of the “e” (edit) icon is the output icon: [-->.
Click here and the ACTIVATE OUTPUT combination that you need.

Go to FILE > EXPORT > AUDIO MIXDOWN
You can now use the Audio Mixdown function in Cubase 5. The Motif XS is being treated like any multi-timbral VSTi at this point. The MIDI is routed OUT to the XS, and the audio RETURN path has been established. Because the XS is a Hardware synthesizer and external to the computer, you will notice that rendering will be processed in real time. You can have Cubase 5 add the stereo mixdown to the Audio Pool and as an Audio Track within the Project.

See Cubase 5 documentation for all the new Export Audio Mixdown options available via the Channel Batch Export feature!!!

Hope that helps.