Digital Designs 815d D2 Subwoofer

Driver Size (Inches): 15
Watts RMS: 1000 – 3000
Peak Power: 6000
Voice Coil Diameter: 4
Impedance: D1 / D2
Fs (Hz): 31
QMS: 4.723
QES: 0.561
QTS: 0.501
Vas (Liters): 63.1
X-Max (MM): 25
Frame OD w/Gasket (Inches): 395mm – 15-35/64
Mounting Diameter (Inches): 350mm – 13-25/32
Mounting Depth (Inches): 255mm – 10
Motor Diameter (Inches): 236mm – 9-19/64
Motor Depth (Inches): 115mm – 4-17/32
Sealed Enclosure (CuFt): N/A
Ported Enclosure (CuFt):

Features:

Extended Pole Piece with Aluminum Shorting Ring
Hi-Roll Foam EROM Surround
Kevlar Reinforced Nonpress Pulp Cone
4.0″ BASV 4-Layer Flat Aluminium Voice Coil
Quad Layer Deep Bass, High Excursion Spider System
Triple Stack High-Grade Ferrite Magnets, 381oz
Back Plate Voice Coil Gap Venting