Drewan77,
OK. thanks for the clarification. So, we are talking degrees of perfection here & not something that blatantly wrong when doing an indoor correction.
And, judging by your last post, it seems that if one of us listened in your room with your indoor correction, we, not knowing your system, might not even be able to tell the slight nasal quality to the mid-bass. You are aware of this since you have done an A/B comparison many times. "Slight" is a fuzzy term but I'll take your word that it's hardly perceptible & maybe only if you point it out to the listener.