Remove thunderbolt cable (if still connected) and then check whether UFX+ is really connected to an USB3 port and whether you are using an USB3 cable. The USB3 ports are usually colored blue. See examples below.

Example: USB Type A connector for the PC side, with additional pins for USB3:

Example: USB 3 Type B plug to be connected to the UFX+:

If this is ok, then please check UFX+ configuration:

Push setup knob, then Options -> Hardware/Diagnostics -> Interface mode.  How is it set?

It should be set to “Auto” to automatically detect the connection, but you can also manually set it to USB3.
For this, you need to disconnect the USB cable first. Otherwise, you cannot change connection type.

Hi Ed.

As you can record from the XTC, I assume that everything is fine on UFX+ and XTC regarding some basic settings, e.g.:
MADI channels (64), frame size (96k) and clock sync (UFX+ master, XTC slave – gets clock from MADI).

> I can record the MADI inputs, but I'm not hearing audio from the UFX+ in the Octamic.

On which channels of the XTC, you do not get audio? On digital outputs (ADAT, ADAT2 or AES)?

Please keep in mind, routing has two components
— routing on each of the MADI devices
— routing in TM FX

Regarding Digital Routing / Easy Setup using Delay Compensation with Auto-CA

You need to configure digital routing on each of the MADI devices using the desired 8 out of 64 MADI channels, easiest to be performed automatically using delay compensation with the feature/setting “Auto-CA”, see below.

After this has been done, you can create submixes in TotalMix FX using MADI outputs MA1-8 OUT for XTC#1.
Then it depends on the digital routing that you configured in the XTC, which digital ports of the XTC get audio from MA1-8 OUT.

Delay Compensation -> Auto-CA (automatic channel assignment)

I recommend you to configure Delay Compensation -> “Auto CA”, then the following things happen automatically:
— XTC's MADI ID will be determined/set (needed for delay compensation and automatic channel assignment/digital routing)
— XTC's digital routing will be configured according to its MADI ID, e.g.
      1st XTC, MADI ID 1, MADI ch 1…8
      …
      8th XTC, MADI ID 8, MADI ch 57…64

This makes digital routing much easier, esp. when connecting multiple XTCs.

Regarding Routing to phones outputs

Routing to the analog phones outputs is being configured separately. Either you can monitor a TotalMix FX submix or particular digital ports of your XTC (ADAT, AES) or even other channels of the MADI bus.

Example: monitoring of TM FX submix MADI1/2 OUT using “Phones1” output of XTC:
1. XTC: push channel knob, then “Phones1 -> Settings -> Source -> MADI 1/2”
2. TM FX: submix mode, click to MADI 1/2 OUT, move fader of HW inputs and/or SW playbacks to get the desired submix.

The relevant manual sections

https://www.rme-audio.de/downloads/octamicxtc_d.pdf
https://www.rme-audio.de/downloads/octamicxtc_e.pdf

Chapter 8.5 - Setup Menu (Clock-, MIDI-, MADI-settings)
Chapter 8.6 - Clock section
Chapter 10 - Delay Compensation, MADI ID, Auto-CA
Chapter 8.4 - Channel menu, p. 17 for phones
Chapter 11.3 - Control via TM FX, explains to set up UFX+ and two XTC for delay compensation (Auto-CA) and Auxdevice (remote control via TM FX)

You still didn't answer what you can't hear. On what port of the XTC? Please explain the audio flow.

Please become more concrete.

1. What audio (from which source) do you want to route to what port on the Octamic XTC?
2. Post a picture of TM FX (in submix mode) after selecting this submix (click to HW output MAx/y).

Later it might be required to inspect the routing on the Octamic XTC (more pictures needed).

If you do not know how to post pictures to this form: you need to place them to the cloud for sharing, paste the URL to here and then put "img" tags around the URL (use "img" button in this editor):
https://www.tonstudio-forum.de/blog/ent … rum-en-de/