AudioControl SPK-10S4 Spike Series 12″ Single 4-Ohm High-Performance Subwoofer – 400W RMS / 800W Peak

Spike Series 10-Inch Single 4-Ohm High-Performance Subwoofer Elevate your car audio experience with the Spike Series Subwoofers, engineered to deliver powerful bass and unparalleled sound quality. With over 45 years of expertise, AudioControl presents the Spike Series, designed to enhance any vehicle's sound system with versatility and durability. Features: 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 UPC: 850038647360 Pairings: A single Spike Series 4 ohm subwoofer pairs handsomely with the ACM-2.300 or ACX-300.2 amplifiers for conservative to moderate listeners. For more robust output levels, consider the LC-1.800. LC-5.1300 or D-5.1300 amplifiers provide ample power, with channel 5 being an excellent match. For systems with two Spike Series 4 ohm subwoofers, LC-1.800 is recommended. Consult an expert for configurations with three or more subwoofers. Specifications (Thiele/Small Parameters): Nominal Impedance (Z): 4 ohms DC Resistance (Re): 3.2 ohms Resonance Frequency (Fs): 41.2638 Hz Piston Area (Sd): 0.0314 m2 Force Factor (BL): 13.6742 T.m Mechanical Q Factor (Qms): 4.83 Electrical Q Factor (Qes): 0.6576 Total Q Factor (Qts): 0.5788 Sensitivity 1W/M (SPL): 83.7199 Mechanical Compliance (Cms): 0.1004 mm/N Moving Mass (Mms): 148.1991 g Linear Excursion (Xmax): 14 mm Volume Acoustic Compliance (Vas): 13.8342 Ltr/0.4885 Cu ft Reference Efficiency (NO.): 0.1419% RMS Power (Pe): 500 Watts Frequency Response: 20-200 Hz Voice Coil Diameter: 2.5 in/63.5 mm Displacement: 0.0626 cu ft/1.771 Ltr In the Box: SPK-10S4 Subwoofer, Manual, Warranty Dimensions: Overall Dimensions: 10.748in/ 273 mm Cut Out Diameter: 9.25 in/ 234 mm Mounting Depth: 5.32in/ 135 mm Mounting Height (w/o Grille): 0.59in / 15mm Mounting Height (w/ Grille): 1.30in / 33mm Motor Diameter (w/ Cover): 6.41in / 163mm Weight: 12 lbs Ported Enclosure: External Dimensions: 24.00″ W × 13.00″H × 11.25″D Net Internal Volume: 1.01 ft3 Total Internal Volume: 1.36 ft3 Gross External Volume: 2.03 ft3 Material Thickness: 0.75″ Tuning Frequency: 37 Hz Port Area: 17.25 inch2 Port Inlet: 1.50″W× 11.50″H Port Length: 28.50″ F3 (Hz): 30 Sealed Enclosure: External Dimensions: 20.00″W × 13.00″H × 11.00″D Net Internal Volume: 1.11 ft3 Total Internal Volume: 1.17 ft3 Gross External Volume: 1.66 ft3 Material Thickness: 0.75″ F3 (Hz): 45.96 Qtc: 0.705 (Note: Enclosure size recommendations exclude driver and/or port displacement)