I too have an acoustically wayward room and for decades suffered from boomy bass which no amount of messing about with speaker positioning seemed top fix. And I love deep, tight, articulate bass.
I'd read of bass traps, but the problem lies in borrowing them to try before you buy and, with a subwoofer, floor space is limited. I also don't fancy sticking panels all over the walls.
Eventually, in the wake of the expiry of my Pink Triangle D:AC, which I couldn't get repaired, I bought a TacT pre-amp/D:AC with Room Correction, which worked wonders in the bass, though getting the midrange and treble palatable is a challenge and a half. Though I still have it after six years and on many but by no means all albums manage to obtain great results, I'm not sure I'd recommend it. It's just too much of a trial to get right.
However, the Lyngdorf RP-1 RC unit is designed to go between an analogue pre- and power amp (or, with an integrated amp, in the tape loop) and is reportedly very good. It may not have the endless adjustability of the TacT (which some have said may be no bad thing), instead offering a choice of six factory preset voicings. Reviews indicate that most people seem to be quite happy with the Neutral voicing. As well as having a less overtly digital sound than the TacT (a devil to iron out), it also incorporates an electronic crossover to facilitate use of a subwoofer or two.
It isn't a D:AC, accepting and outputting only analogue signals with, reportedly, minimal influence, so you won't need to ditch any of your existing kit. As an alternative to wall panels and bass traps, it's certainly worth investigating.