Specifications
Sensitivity: 83.1 dB
Nominal Impedance: Dual 4-Ohm
DC Resistance: 3.2 Ohm
Voice Coil Dim: 3"
Power Handling: 750 Watts RMS
Peak Dynamic Power: 1500 Watts 
XMAX One Way: 0.708661in  / 18mm
VAS: 12.1 L
FS: 36.9 Hz
QES: 0.72
QMS: 6.06
QTS: 0.64
CMS: 70 um/N
MMS: 241.2g
BL^2/RE: 82.6
Magnet: 240 Oz
Displacement: 3.7L / .13cu.ft
Enclosure Suggestions
Sealed
20 L/ .371 cu. ft Qtc 1.1
Ported Compact
35L / 1.236 cu.ft / P:4" L: 15.74" / 40 cm / FB: 38 Hz
Ported
50 L / 1.76 cu/ft / P:4" L: 10.64" / 27 cm / FB: 32 Hz
BP 4th
3:1 Ratio