Passive analog eq’s will destroy the phase coherence of your sound because of the way they work. I actually use one in my vintage R&R system to great advantage where imaging, soundstaging, phase and time coherence, and accurate tonal reproduction are of very little to no concern, but funking (yes that is an "n") up the sound to provide the overly-ripe bass, depressed mids, and tizzy treble of the era are the order of the day.
As someone (randy?) already pointed out, smart digital eq’s that accurately measure and adjust hundreds of frequency parameters using computer algorithms may be the order of the day for mid-to-low bass correction without the phase shift IF you only use digital sources. A good friend of mine with a $250k+ system uses this capability of his JL Fathom subs and swears by it. No turntable.
Still need to measure the room for 1k and up frequencies to identify and treat hot spots with absorption and then perhaps diffusion to improve imaging and soundstaging.
Dave
As someone (randy?) already pointed out, smart digital eq’s that accurately measure and adjust hundreds of frequency parameters using computer algorithms may be the order of the day for mid-to-low bass correction without the phase shift IF you only use digital sources. A good friend of mine with a $250k+ system uses this capability of his JL Fathom subs and swears by it. No turntable.
Still need to measure the room for 1k and up frequencies to identify and treat hot spots with absorption and then perhaps diffusion to improve imaging and soundstaging.
Dave