Velodyne DD-12 PLUS Servo Subwoofer

Velodyne
DD12 plus in black
  

Great condition, original packing and accessories. Manufacture date is May, 2014. What may appear in some of the photos as white marks are just reflections from overhead lights. The finish of this subwoofer is gorgeous and nearly perfect except for a single ding as photographed, which is located low on the back corner. I only purchased this subwoofer on Audiogon a couple months ago. I've decided that a 3rd subwoofer is just too much for my room so I'm staying with just two Velodyne DD-15 subwoofers I've owned for 10 years. This DD-12 PLUS subwoofer @ 12" equals or exceeds the output of one of m 15" DD-15's. 

The 12 inch Digital DrivePLUS subwoofer produces awe-inspiring,
hard-hitting bass supported by Velodyne's exclusive patented accelerometer
based High Gain Servo System to whittle distortion down to .5%. Its
cutting-edge, highly sophisticated, 8-band Auto-EQPLUS technology assures not just
low distortion but the most accurate bass available from any subwoofer
available in the market today. And if you prefer, you can calibrate the
subwoofer’s response with the 8 band parametric equalizer manually with its
on-screen graphics, or computer readout using the front mounted USB port. You
can even adjust the degree of control by the digital servo. The DD-12+
perfectly meshes audio engineering with the art of design to deliver a
frequency response between 17 and 120 Hz, with a huge 1250 Watts RMS, 3000
Watts Dynamic, power amplifier, reproducing even the most challenging audio for
applications from music to home theater to gaming. The 12 inch Digital
DrivePLUS fills large listening spaces (>3500 cu. ft.) with
room-shaking, hyper-accurate bass., perfectly optimized by the 8-band
Auto-EQPLUS equalizer feature and remote-controlled presets to ensure you get
the most out of your new audio equipment.

If your space is large and your need for power and perfection is great, the DD-12+
has what you’re looking for.

 Features:

Patented accelerometer based High Gain Servo System

The industry's lowest distortion bass—under .5%

One-Touch Auto-EQPLUS automates the seamless blend of subwoofer, system and room

Use your PC for manual adjustments and real time feedback of your bass performance

Sophisticated cone design for fast, accurate motion

Six-layer custom wound voice coil assures better heat dissipation

Massive motor structure for amazing low-frequency energy