Well I have many pcs but certainly I dont want to use a PC for a crossover when I can have a normal dedicated device. I thought I very clearly described I want a separate crossover device with AES input and output connectors. Then I just connect my amplifiers to that with cables. DONE. PCs are really unreliable compared to that. And then what, have the PC running for next lets say 15years when I listen to music? Why overcomplicate. And what if that PC does something weird and temporarily frequencies go out of order cos of some malfuction, then my Bliesma diamond dome tweeters have fried. Who will pay for that, nobody.
Overcomplicate? You have a DAC with a unique capability that solves your exact use case but you have no desire to explore it. I get it, computers are scary, but it elegantly solves your application. I've used CamillaDSP on a RPi4 with an Okto everyday for the last three years and it has been rock solid. I've had many more reliability issues with commercial DSPs.
I'll bow out at this point and leave you to your search. Good luck!
Michael
But in fact what is the difference with any loudspeaker management system? I mean, when i open the Dolby i see nothing really different than a PC.
And being sound engineer i use a PC to listen/produce or work on audio on a daily basis for the last 25 years. And tbh i still have one which date from circa 2005 (running win xp) i use as exactly what we talk about in a secondary system ( FIR xover processor with digital input and vst plug ins+host+soundcard).
I never lost a tweeter because of a crash. But i get your fear. That said if you think someone else will pay because something fried during a crash or whatever i fear you are dreaming.
That said it's not an hardware issue, rather something O.S. related. And truth is O.S. are way more stable this days than it was before year 2000.
Now your use: how many ways for your loudspeakers, how many amps to drive? Your sources ( i suppose you use more than only one?)? Except for xover duties ( and assimilated, like delay, eq,...) what do you expect to perform exactly?