You might be able to find a used pair of Dunlavy III at this price point. I'm suggesting these because of their driver configuration. With this type of speaker that employs mids and woofers above and below a centralized tweeter, there is less power fall off, as you move away from them in distance (as compared to conventional speaker configuratons). This type of speaker configuration tends to sound "louder", than a similarly rated SPL speaker, that does not have multiple vertical drivers ,such as the Dunlavy Line.
There are other speakers lines that also use this type of configuration very successfully (such as the Montana line and JM, which are out or your price range). The point being, there are probably other vertical D'Appolito designs, which I have not thought of, for you to consider.
I have personally made a couple of DIY designs, with this particular vertical driver configuration, and they really tend to deliver the power. They also seem to require less driver and crossover dinking, in order to sound half decent. There's just something about the way that these vertical driver designs deliver power into a room (as compared to conventional designs).
If you really want serious bass power (at your price point), the only speakers I can think of that will do what you want are the NHT 3.3 and the Legacy Classics and the VMPS line (not sure which VMPS model though). Both the NHT and the Legacy have been listed on Audiogon for around $1500. The NHT's don't use as good as drivers as the Legacys, but the Legacys are not necessarily as together sounding as the NHT's. In my opinion, the Legacys offer the most air moving ability, for the buck, where the NHT's are one of the best attempts at getting decent, coherent sound, out of a design that uses average drivers and crossovers. Either seem to fit your description of what you are looking for.
Good Luck on your quest.