Bookshelf speakers with the good bass.

Dynaudio Acoustics BM15P is the passive model. Lot of on-line Pro sites should have it. It is an excellent speaker.
I owned a pair for about six months and used them with a Manley Stingray. Brand new pair 1100-1300 range.

Totem Mani-2s have excellent bass ((to ~30Hz) and sound great top to bottom. You need lots of power for them though.

Phase Tech makes some of the most amazing small speakers I've heard. They have great bass and they are inexpensive. Look at the PC 1.5s.

KLIPSCHFAN
I've tried and only what is available is BM15A.

You can still find BM15P on line and new - but it may have been discontinued so it is not available everywhere.

The 10 inch woofer has a 4 inch voice coil and along with the esotec tweeter this is a very serious speaker for the money. Of course it will look butt ugly but given your price range I suspect it will be hard to find something beautiful aesthetic stand mount and yet still get you the bass response you want.

The midrange will not be as forward as the Harbeth (it probably has a bit of scooped midrange - like most hi-fi speakers do) but it is very much in the direction you seek.