Recommended USB interfaces for Active DSP crossover

dathzo · January 18, 2022, 6:46am

Thanks for the two posts and links above. This is very helpful

grizaudio · January 18, 2022, 7:02am

Feel free to PM me if you have any specific application questions with the Motu
Cheers

Omid_Mostachfi · January 19, 2022, 5:55am

grizaudio:

If you search this forum I created a few threads on the Motu.
The Motu Mk5 lite is an audio class compliant device.
In theory it should operate without drivers.

I have done extensive testing using multi channel audio for an active 4 way setup, and the Motu works perfectly under Linux Ubuntu 21.10, which uses Kernel 5.14.

Its all about the Linux Kernel. Roon rock runs a customised and very old Linux kernel, (Amended) which doesn’t work so well with the Mk5… I use a RPI4, so I don’t have the Nuc in my listening space.

I have had no issues using Ubuntu Kernel 5.14+, completely without any drivers.

I will say Roon produces noise on channels 9-10, as it only addresses a maximum of 8 channels on USB. Something to note if you need 9 or 10 channels. In my application I simply mute these channels down, within the Motu software.

These thread links might be helpful.
My experience with the Motu Mk5.
Motu UltraLite-mk5 - #59 by grizaudio

Noise on channel 9-10, using Roon multichannel assignment.
MOTU UltraLite-mk5 and Linux on Raspberry Pi 4: noise on unused channels

Cheers

Thank you for the info, very helpful.