Speakers with deep/powerful bass

I used to sell those big 15 inch Cerwin Vega's in the 1980's - sold them with the massive Pioneer/Sansui/Marantz receivers back then. I probably account for hundreds of people losing most of their hearing at a young age. But man did Stairway to Heaven sound like Heaven, as did the Who, Rolling Stones, Alice Cooper, Meatloaf and AC/DC. Mozart? Not so much.....

Hmmm, might be giving away my age there.....

+1 on the room being the most important factor. My Rockport Avior ii speakers give all the high quality bass I would ever desire and then some. 

GoldenEar Triton Reference.  Built in subs with 750w amps. They go down to 12 htz. 92db sensitivity. Great speaker. 

So do you want it to sound like it was recorded or do you want it to shake the floor.  Very seldom do those 2 choices overlap.

I used to enjoy watching people who came over to enjoy some tunes, jump out of their skin, when Tony Levin hit that certain note on his bass stick on Al DeMeola's Scenario. At the time I had a pair of AR9lsi driven by a pair of Perreaux PMF 2150's. Priceless!