Originally Posted by BGLeduc
I have done some experimenting on this topic, and I am pretty sure that allowing the Anthem to process the analog input but turning ARC off still left the ARC calculated crossovers functional. I can revisit, but I am almost positive that this was the case. Or maybe that is what you are saying?
Sure. The ARC setup process Uploads Crossover values and speaker configuration values (which you can see) and room correction parameters (which you can't see).
Turning ARC Off simply means the room correction parameters are not applied. Whatever was Uploaded by ARC for the Crossover values and speaker configuration still apply. But you can change those Crossovers manually if you like -- same as you can change the speaker configuration -- without "breaking" the ARC solution, since the ARC solution is not in use.
For example, if you want to do a manual setup after running ARC, you will likely need to revisit the speaker levels ARC has Uploaded. ARC tries to apply the room correction parameters as "attenuation" whenever possible, and so the levels ARC Uploads may be set a bit high to allow that to work and still produce the real, desired output level.
So Process Analog Input NO means no processing -- neither ARC nor manual.
Process Analog Input YES with ARC ON means processing using your last Uploaded ARC solution.
Process Analog Input YES with ARC OFF means processing without use of the ARC room correction parameters. The processing will use whatever is currently in Setup for Crossover values and speaker configuration (including levels). Those may be values installed by your last ARC Upload, or values you've set manually if you've never run ARC. Either way, you can now tweak them manually as needed. If you make any such changes and then decide you'd rather return to using ARC, you should open up your last ARC results file on your computer and re-Upload that to the Anthem so all the settings are back to matching what ARC calculated.