Impulse Response Utility is Not Recognizing Audio Interface Outputs

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Level 1

10 points

Impulse Response Utility is Not Recognizing Audio Interface Outputs

Logic Pro's Space Designer Impulse Response Utility is not recognizing my audio interface I/O.

I've used the utility a bunch of times to make impulse responses of my guitar cabs without fail, using the same setup. Now it only recognizes the interface and its input, so it's hearing the cab, however it is not recognizing the outputs and sending only to the Mac Studio speakers.

Something tells me there's a corrupt preference file somewhere. Or that UA has once again screwed up its software.

Interface: Universal Audio Apollo x4

OS: Sonoma 14.7.7 (23H723)

Logic: 11.2.2 (Latest)

Impulse Response Utility: 11.2.2 (latest)

Interface Firmware: Latest

Interface Software: Latest

Posted on Dec 7, 2025 9:03 AM

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Answer 1

shakefists Author

Level 1

10 points

Dec 8, 2025 7:44 AM in response to shakefists

If I create an aggregate device within the AudioMidi setup app, it'll then show up in IRU and work fine.

Thoughts?

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Answer 2

yoyoBen

Level 4

3,403 points

Dec 8, 2025 1:19 AM in response to shakefists

What happens if you quit Logic? And in your first picture "Lock" is enabled.

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Answer 3

shakefists Author

Level 1

10 points

Dec 7, 2025 12:24 PM in response to shakefists

Adding to the above. I've connected an additional interface (Zoom L6) as an output device. The OS and Logic recognizes it, however IRU assigns its output to the Mac Studio Speakers (circled below).

Despite this little confusion on IRU's behalf, Apollo's outputs aren't showing up anywhere in any of the recognized devices in the Audio Output dropdown.

Thoughts?

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Answer 4

shakefists Author

Level 1

10 points

Dec 8, 2025 5:56 AM in response to yoyoBen

The image was for reference. But yeah, lock/unlock, IRU is still confusing I/O.

Rolled back to an earlier install of Logic too that didn't affect the issue.

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