Speakers with deep/powerful bass

The old Polk audio SDA line put out some really good low bass if you properly powered them. They also have decent sound quality with upgraded tweeters and crossovers.

Anything jbl with 12 inch woofers or bigger. My jbl 4345 will shake the pictures off the wall and still sound dang good while doing it

My Focal Stella Utopias have no trouble energising my 'difficult' room.

They each use a 13.5 inch field coil bass driver, similar to the 18 inch one in the Grande Utopias. I'm a fan of drum and bass, a genre where the melody is in the sub-bass region, as wel, as root rockers and dub reggae, plus deep house. No other genres require more ,well-controlled, deep bass

My speakers are supported by four 18 inch Velodyne dd18+ subs, in stereo bass stacks alongside my main speakers.  I reckon I've got sota bass.

There's no replacement for displacement.

I have a pair of Altec Lansing VOT's driven by a Conrad Johnson Premier 4. I put on Aurthur Browns 'Fire' and give it the 'match test'; I hold a match about 1" from the woofer dustcover and the turbulence blows out the match. Yes, there is bass.