Eminence Alpha-6A - 8 Ohm

Haven't felt the need to upgrade from these yet

Some of the best midranges I've heard, and I've heard many. Sound is well-rounded and detailed without harshness or objectionable distortion at high levels. Certainly hi-fi quality.

Roll-off behavior is very good - textbook 12 db/oct above 5,5 kHz and almost no cone break-up modes to speak of; good dispersion even at higher frequencies; can easily cover the most critical range of 250...5500 Hz.

Doesn't need a complex crossover to sound good - in fact, I'm using none (except the active one for bass/mid separation), the driver's natural roll-off is good enough to successfully pair it with a tweeter.

And yet robust - they can take some low-frequency abuse...