Speakers with deep/powerful bass

Most speakers mentioned here has Non accurate bass big rounded bass altec Lansing cerwin Vega , Klipsch , these speakers at best upper 30 hz 

that’s why i mentioned  a good quality powered sub woofer if that’s what you want 

this will enhance most speakers unless you have  over $20k+ for upper quality speakers. I am torn from a decent say marten oscar trio which will do quality bass to around 30 hz , or buy a great stand mount such as the. MBL  126 stand mount with matching stands , and just buy another Svs SB 4000 sub . I have all year to ponder this for these are all in the $15k + range , I have to save my Pennies.

The Volti Audio Rivals w/ their 15” pro audio sourced woofers, while maybe only flat to 35hz, can play as loud as you want & sound great doing so in just about any size room. I have listened to Jethro Tull’s Aqualung on many good systems & thought I knew it well. Then through the Rivals w/ a good tube amp, I heard the true impact of the bass guitar & drums like never before. It was up very loud & I was both scared & cracking up at the same time. That said, Martin Barre’s guitar solo on the cut was also outstanding w/ power & body that few speakers can do at least for long. 
 

If you want the volume & dynamics of the old JBL’s, Altecs, Klipsch, Cerwin Vegas etc & the nuanced detail & imaging of good modern speakers, check them out. Imo, They’re the closet thing to live music I’ve heard at anything near a reasonable price. Their “smaller” model, the Razz, comes pretty close for less than half the $. ( about $6K vs about $15K).  Both are so much fun!!

I've shook my room and at times the house with my Moab's (2 - 12's" each) more than a few times. My wife thought the military base not far from us was detonating old ordinance (MCAAP base in OK).

They were VERY well-known for bass, but when we built a couple of cabinets for  24" Hartley woofers for the Mark Levinson HQD system, we learned what REAL bass was in a relatively small room.

No slam on CV's, but it you want REAL bass...get yourself a pretty hefty amp, of  course...

I had the Snell Type A V5 system. It was fun to bring a newbie into the listening seat and hit them with deep percussion. (18 inch subs) Even their wife downstairs would jump when the walls rattled!