No sound from Prologue 8 via USB MIDI into Mac

[BKtimes2]

I just connected my new Prologue 8 to my Mac to work in Logic and I'm unable to get any sound into the Mac.

I've updated the firmware, etc. Everything works/sounds fine directly out of the Prologue. I'm connecting to my Mac via direct USB. The Prologue shows up in the Apple MIDI Audio utility, and I can see that it's transmitting data when I run tests. When I press the Prologue keys, my Mac acknowledges it's receiving data. When I test the Mac pulling a sound, I can see the oscilloscope running, but I can't hear anything (either via the external DAC I'm using or directly from the Mac's speaker).

In Logic, when I select Prologue Sound as the MIDI destination (channel ALL) I don't hear anything (and I've checked every channel individually). However, if I select my Roland JX-03 (also connected directly via USB) as the MIDI destination, I can use the Prologue as a controller just fine.

The Prologue is set to MIDI Route USB and Global Channel 1 and Sub CC Channel 2.

It feels like I may be missing something obvious, but I have no clue what else to do.

[LM]

Are you trying to record audio from the Prologue using its USB connection? Unlike the JX-03, which transmits both MIDI and audio, the Prologue only transmits MIDI information over USB. If you want to record audio, you need to connect it to an audio interface.

[BKtimes2]

Ha! Wow. Yeah, that's the answer. As I said...I'm sure I'm missing something obvious.

Thanks for pointing that out and saving me a ton of frustration!