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MOTU 24Ao info

Connecting Hauptwerk to MIDI organs, sequencers, ...

MOTU 24Ao info

Postby engrssc » Fri Oct 18, 2019 8:28 pm

Could be useful as to how to configure a 24Ao as an audio interface.

Within the software of the 24Ao is a routing grid setup where you define each input (sources) which are on the top of the grid and the outputs (destinations) which are on the left side of the grid. The 24Ao has 24 inputs and 24 outputs. There are various ways to add more 24Ao's to a system network.

Then you click on the grid's (cross connect) box which connects a source (along the top) to a destination (along the left side).

You set up the audio in Hauptwerk in the normal way, they are the sources for the 24Ao (grid)

Here are some videos to help explain the procedure:
https://www.youtube.com/watch?v=Q9WSWKdHh-4
https://www.youtube.com/watch?v=m5t1sAjplJY

https://motu.com/proaudio/index.html#training-videos

As well, the User Manual:

https://cdn-data.motu.com/manuals/avb/24Ai_24Ao_User_Guide.pdf
https://motu.com/proaudio/index.html

In addition to the routing scheme above, I used the (included/built-in) CueMix DSP software (48 input digital mixer) to combine all of the sources into a stereo output (monitor mix) which can be used to drive a headset. A great practice feature if you don't want to use the speakers

BTW, you can setup multiple routing grids and save each of them. Each can be recalled if you want to try various audio routing combinations.

Rgds,
Ed
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Re: MOTU 24Ao info

Postby Romanos » Sat Nov 30, 2019 10:17 pm

I’m grateful for this. When my current unit dies, I will likely replace it with one of these. Currently only drive 8 channels, but the added flexibility, ability to expand, and internal dsp are all appealing.
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Re: MOTU 24Ao info

Postby magnaton » Sun Dec 01, 2019 12:10 am

I've had this unit for a couple years now and love it. I've been a big fan of MOTU for their simple selling points of having all discreet channels, DSP and EQ capabilities. You can squeeze 2 extra channels out of it by configuring the 1st digital output as an S/PDIF instead of ADAT. Then using a Toslink cable you can send these 2 channels to receiver or $25 digital/audio converter.

I recommend using the DB25 mini-snakes with male XLR connectors vs the Phoenix connectors. This makes for easy connections to active studio monitors as standard M-F XLR (or microphone) cables are plentiful from many sources. Unfortunately these DB25 snakes don't come in a 1/4" female TRS orientation which would duplicate the connectivity of most production audio interfaces.

Having extra channels at your disposal opens up some fun possibilities; I took a pair of old, self-powered PC speakers I found in a closet, hooked them up and placed them somewhat hidden on my console and routed just the console noises to them thus keyboard and piston noises emanate from the console. I have a pair of 8" active monitors high up on the back wall of my studio dedicated to the En Chamade rank of various sample sets. One time I hooked up a cheap, consumer grade speaker, placed it some distance away and routed just the Zimbelstern to it. Getting the organ to sound from different or dedicated (appropriate) locations with existing or cheaply acquired components can further add to the virtual pipe organ experience.

Danny B.
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