I discovered you can have too much bass. My home theater is 326 sq ft. and I used 2 REL Reference subs for a month before I sold one, which was always the plan. One sub was a new REL G1 MkII, the other was my older REL G2 Gibraltar. I had substantial bass to 15 Hz.
Sound demos usually include explosions, submarine depth charges, Godzilla stomping and roaring but nothing has sustained 15 Hz - 30 Hz bass that goes on for 15 seconds or more like Blade Runner 2049, Denis Villeneuve's masterpiece with music by Hans Zimmer. Track 1 - '2049' and track 3 - 'Flight to LAPD' will tax any home theater. Playing both tracks at theater levels scares me, I eventually have to turn it down. Everything in the house vibrates including my body. Eyeballs are filled with fluid, when that fluid starts vibrating and my vision starts getting blurry it's time to turn down the volume. A buddy came over for a demo, initially not believing my blurry vision story until it happened to him too.