SPK-12S4

• High Excursion Design for Ultra-Low Bass
• Fiber Matrix Paper Cone with Mica Coating
• 3-Layer High Temp Voice Coil Former
• Dual Damping System for Linear Bass Reproduction
• Dual Dust Cap System for Enclosure Compression Control
• Efficient Heavy-Duty Motor Design
• Removable Subwoofer Grille Included

thiele/small parameters

• Nominal Impedance (Z)               4 ohms
• DC Resistance (Re) ]]                    3.2 ohms
• Resonance Frequency (Fs)          40.4239 Hz
• Piston Area (Sd)                            0.0491 m2
• Force Factor (BL)                         13.7286 T.m
• Mechanical Q Factor (Qms)       6.5823
• Electrical Q Factor (Qes)             0.8207
• Total Q Factor (Qts)                    0.7297
• Sensitivity 1W/M (SPL)               85.4588
• Mechanical Comp (Cms)            0.0815 mm/N
• Moving Mass (Mms)                   190.3035 g
• Linear Excursion (Xmax) .          14 mm
• Volume Acoustic Comp (Vas)    27.4067 Ltr/ 0.9678 cu ft
• Reference Efficiency (NO.)         0.2118% RMS
• Power (Pe)                                    500 Watts
• Frequency Response                  20-200 Hz
• Voice Coil Diameter                   2.5 in/63.5 mm
• Displacement                              0.0885 cu ft/ 2.506 Lt

in the box:

• SPK-12S4, Manual, Warranty

dimensions

• Overall Dimensions: 12.76in/ 324mm
• Cut Out Diameter: 11.125 in/ 282mm
• Mounting Depth: 6.14 in/ 156 mm
• Mounting Height (w/o Grille): 0.68in / 17.3mm
• Mounting Height (w/ Grille): 1.437in / 36.5mm
• Motor Diameter (w/ Cover): 6.41in / 163mm

ported enclosure

• External Dimensions: 24.00″ W × 15.00″H × 14.25″D
• Net Internal Volume:  1.77 ft3
• Total Internal Volume:  2.18 ft3
• Gross External Volume:  2.97 ft3
• Material Thickness: 0.75″
• Tuning Frequency: 39 Hz
• Port Area” 27 inch2
• Port Inlet: 2.00″W× 13.50″H
• Port Length: 20.75″
• F3 (Hz):  30

sealed enclosure

• External Dimensions: 18.00″ W × 15.00″H × 10.00″D
• Net Internal Volume:  1.0 ft3
• Total Internal Volume: 1.09 ft3
• Gross External Volume: 1.56 ft3
• Material Thickness: 0.75″
• F3 (Hz): 52.77
• Qtc:  0.948

*Enclosure size recommendations do not include driver and/or displacement

Full Line Catalog

Literature

User Manual

Templates