MartinLogan subwoofers? Yup—although the Kansas company is known as an electrostatic specialist, they've been making subs for a long while. The new $2995 Descent1 seems pretty spiffy, though: Top-mounted control interface (hidden under the logo plate), three rigid-chassis, aluminum-cone drivers, triple-servo monitoring, a sealed cabinet enclosure, and three 250W Vojtko amplifiers.
Anechoic range is given as 18–125Hz, ±3dB.
And did we mention that it's pretty?