I tried responding to your two previous questions on these threads:
http://www.elektronauts.com/t/ot-four-rytm-setup/7584/73706
and
http://www.elektronauts.com/t/midi-controller-ot-a4-ar/8850/71534
but I never heard back from you, so I guess it didn’t go too well. I’ll try again.
I don’t have an Analog Four, an Analog Rytm, or a Sub37, but I had a look at their respective manuals to try to figure out a solution for you. Maybe someone with more hands-on experience will also post.
I suggest that you start with the fewest possible units and then add the others one-by-one. Maybe start with the OT and the AR.
I’m assuming that you don’t have a computer that you want to connect as part of the set-up. If you did, my advice might change.
PHYSICAL CONNECTIONS
For the S37 to send notes to the OT, connect the S37 MIDI Out to the OT MIDI In.
For the OT to synchronise with the AR, connect the OT MIDI Out to the AR MIDI In.
For the OT to talk to the other units, connect the AR MIDI Thru to the AF MIDI In and connect the AF MIDI Thru to the S37 MIDI In.
CONFIGURE THE OT
In the PROJECT>CONTROL>MIDI SEQUENCER menu:
Set the CC Direct Connect setting to ‘on’.
In the PROJECT>MIDI>CONTROL menu:
Set the AUDIO CC OUT setting to ‘INT’ for simplicity.
Set the AUDIO NOTE IN setting to ‘On’ to allow the S37 to play the OT’s audio track sounds.
Set the AUDIO NOTE OUT setting to ‘INT’ for simplicity.
In the PROJECT>MIDI>SYNC menu:
Set the TRANSPORT SEND setting to ‘on’ so that the OT controls starting and stopping of your gear.
Set the TRANSPORT RECEIVE setting to ‘off’.
Set the CLOCK SEND setting to ‘on’ so that the other units can synchronise with the OT.
Set the CLOCK RECEIVE setting to ‘off’.
Set the PROG CH SEND setting to ‘off’ temporarily. When you are confident that your system is OK you can choose whether to turn this on.
Set the PROG CH RECEIVE setting to ‘off’.
In the PROJECT>MIDI>CHANNELS menu:
Leave the channel settings as the defaults shown in the manual (AUTO CH = 9, TRIG Channels = 1, 2, etc.
CONFIGURE THE AR
Select one of the Global slots to store your configuration.
In the MIDI SYNC screen:
Set the CLOCK RECEIVE setting to ‘on’ in order for the AR to synchronise with the OT.
Set the CLOCK SEND setting to ‘off’ because the OT will provide the synchronization signal.
Set the TRANSPORT RECEIVE setting to ‘on’ in order for the OT to control the AR.
Set the TRANSPORT SEND setting to ‘off’ because the OT will provide the control of starting and stopping.
Set the PROG CH RECEIVE to ‘off’ temporarily. When you are confident that your system is OK you can choose whether to turn this on.
Set the PROG CH SEND setting to ‘off’ because the OT will provide the control of switching patterns.
In the MIDI PORT CONFIG screen:
Set the THRU PORT FUNC setting to ‘MIDI’ so that MIDI information will be passed from the OT through the AR to the other units.
Set the INPUT FROM setting to ‘MIDI’ to get information from the OT.
Set the RECEIVE NOTES setting to ‘off’ temporarily. When you are confident that your system is OK you can choose whether to turn this on.
Set the RECEIVE CC/NRPN setting to ‘off’ temporarily. When you are confident that your system is OK you can choose whether to turn this on.
In the MIDI CHANNELS screen:
It’s probably best to temporarily set the MIDI channels for tracks 1-12 and FX all to ‘off’. When you are confident that your system is OK you can choose whether to turn these on.
CONFIGURE THE AF
Select one of the Global slots in the Global menu to store your configuration.
In the MIDI SYNC screen:
Set the CLOCK RECEIVE setting to ‘on’ in order for the AF to synchronise with the OT.
Set the CLOCK SEND setting to ‘off’ because the OT will provide the synchronization signal.
Set the TRANSPORT RECEIVE setting to ‘on’ in order for the OT to control the AF.
Set the TRANSPORT SEND setting to ‘off’ because the OT will provide the control of starting and stopping.
Set the PROG CH RECEIVE to ‘off’ temporarily. When you are confident that your system is OK you can choose whether to turn this on.
Set the PROG CH SEND setting to ‘off’ because the OT will provide the control of switching patterns.
In the MIDI PORT CONFIG screen:
Set the THRU PORT FUNC setting to ‘MIDI’ so that MIDI information will be sent from the OT to the S37.
Set the INPUT FROM setting to ‘MIDI’ so that the OT can control the AF.
Set the ENCODER CFG setting to ‘INT’ for simplicity.
Set the KEYBOARD CFG setting to ‘INT’ for simplicity.
Set the RECEIVE NOTES setting to ‘on’.
Set the RECEIVE CC/NRPN setting to ‘off’ temporarily. When you are confident that your system is OK you can choose whether to turn this on.
In the MIDI CHANNELS screen:
It’s probably best to temporarily set the MIDI channels for tracks 1-4, FX and CV all to ‘off’. When you are confident that your system is OK you can choose whether to turn these on.
CONFIGURE THE S37
Make the following settings n the MIDI menu:
IN CHANNEL: perhaps ‘16’ to allow you to use the OT to sequence the S37 on MIDI channel 16.
OUT CHANNEL: set 9 so that the S37’s keyboard can be used to enter and play notes on the OT.
SEND PGM CHG: ‘off’, temporarily. When you are confident that your system is OK you can choose whether to turn this on.
RCV PGM CHG: ‘off’, temporarily. When you are confident that your system is OK you can choose whether to turn this on.
IN PORTS: ‘DIN’, temporarily. When you are confident that your system is OK you can choose whether to change this.
OUT PORTS: ‘DIN’, temporarily. When you are confident that your system is OK you can choose whether to change this.
ECHO DIN IN: ‘OFF’.
ECHO USB IN: ‘OFF’.
POLY NUMBER: ‘OFF’.
OUT FILTERS: KEYS: ‘ON’
OUT FILTERS: WHEELS: ‘ON’
OUT FILTERS: PANEL: ‘OFF’, temporarily. When you are confident that your system is OK you can choose whether to change this.
Give this a try, adding one instrument at a time, and report back with any problems you have.
Have fun!