Martin Logan Balanced Force 210 (gloss black)

Martin Logan Balanced Force 210 Subwoofer (black). No box, Local pickup only. In very good condition, only selling because getting a new color version of the same subwoofer and you cannot just replace the top part.  Two 10" drivers. Can tune using the controls on the sub or using the separate Martin Logan Perfect Bass Kit, which hooks up via the USB port on the sub.  Custom low pass filters for anybody who owns Martin Logan speakers as these settings are designed to work seamlessly with any ML speakers from the last 30 years. Fully sealed cabinet.  RCA and XLR inputs. Do not have the spikes that were originally included as this has always been on hardwood floors. 
one super fine, hard-to-see scratch on top of sub, right half.

https://www.martinlogan.com/en/product/balancedforce-210

Specifications:

20–120 Hz ±3dB; Anechoic through LFE effects input

RCA LFE and stereo, XLR inputs. 850 Watts RMS, 1700 Watts Peak for EACH DRIVER (so 3400 watts peak). Two 10" (25.4cm) cast-basket, high-excursion, aluminum cone drivers with extended throw driver assembly, in a sealed non-resonant asymmetrical chamber. 

Low Pass Filter Frequency

30 - 80Hz

Inputs

RCA: Left, Right and LFE.
XLR: Left, Right and LFE.
Speaker Level: Left and Right banana jacks.
12V Trigger: 3.5mm
Mini USB (for PBK)
USB (for crossover & firmware updates)

Power Draw

Typical: 125 Watts
Idle: 15 Watts

Weight

96 lbs. (43.5 kg)

Dimensions

19" x 19.1" x 19.4 "
(48.3cm x 48.6cm x 49.4cm)