Features
Low-Profile Shallow Mount Subwoofer
Fiber Matrix Injection Molded Polypropylene Cone
Weather-Resistant Design
3-Layer High Temp Voice Coil Former
Optimal Thermal Efficiency
Wrap-Sealed Rubber Gasket to Protect Enclosure Interior
Removable Subwoofer Grille Included
Specifications
Thiele/small parameters
Nominal Impedance (Z)  4 ohms
DC Resistance (Re) 1.8 ohms
Resonance Frequency (Fs) 37.48 Hz
Piston Area (Sd) 0.0330 m2
Force Factor (BL) 10.03 T.m
Mechanical Q Factor (Qms) 4.0332
Electrical Q Factor (Qes) 0.4879
Total Q Factor (Qts) 0.4353
Sensitivity 1W/M (SPL)  86.0912
Mechanical Comp (Cms) 0.1554 mm/N
Moving Mass (Mms) 116.0099 g
Linear Excursion (Xmax) . 9 mm
Volume Acoustic Comp (Vas) 23.6364 Ltr/0.834712 cu ft
Reference Efficiency (NO.)  0.25% RMS
Power (Pe)  400 Watts
Frequency Response  20-250 Hz
Voice Coil Diameter 2.5 in/63.5 mm
Displacement  0.045 cu ft/ 1.275 Ltr
In the box:
SPC-10S4, Manual, Warranty
Dimensions
Overall Dimensions: 10.39 in/ 264 mm
Cut Out Diameter: 9.13 in/ 232 mm
Mounting Depth: 3.5 in/ 89 mm
Mounting Height (w/o Grille): 0.71 in / 18mm
Mounting Height (w/ Grille): 1.22 in / 31mm