IF your speakers sound good without loudness compensation (any brand, any size woofer), i.e. normal amount of bass at very low volume, then they have too much bass at normal or loud volumes. i.e. that is like having the loudness circuit engaged at all volumes, a no-no.
many people like lot’s of bass, but mid bass, lower mids are ’buried’ by too much low bass.
Get thee a simple Sound Pressure Meter, tripod, set at ear height at listening position
next a test cd with individual tones. Note: I scanned several Stereophile Test CD’s, others, none of them have the full range of frequencies this test disc has (29).
https://www.discogs.com/release/7290000-Various-Amazing-Bytes
you will know how flat of a frequency response your speakers are producing, IN That Space, AT that location.
It’s hard to find, and expensive, I can find a used copy if interested.