Other than what’s already been suggested (“first, thou shall ensure your room is as good as can be, and your gear is as properly positioned as your spousal unit shall let you get away with”), since you’re describing a fixed listening position and room correction can be done within Roon, I’d suggest you either dive into the rabbit hole of measuring, or get in touch with one of the services that can do it for you (the Home Audio Fidelity guy is more active here, Mitch Barnett at AccurateSound also comes to mind).
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