AudioControl SPK-8S4 Spike Series 8″ Single 4-Ohm High-Performance Subwoofer – 300W RMS / 600W Peak

Spike Series 8-Inch Single 4-Ohm High-Performance Subwoofer Get ready to immerse yourself in the deep, rumbling bass with the Spike Series Subwoofers from AudioControl. With over 45 years of expertise, AudioControl delivers high-performance subwoofers designed to elevate any vehicle's sound system. 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: 850038647384 Pairings: A single Spike Series 4 ohm subwoofer pairs ideally with the ACM-2.300 or ACX-300.2 amplifiers for conservative to moderate listeners. For more imposing output, consider the LC-1.800 amplifier. LC-5.1300 or D-5.1300 amplifiers provide esteemed output, with channel 5 being a fantastic match. For systems with two Spike Series 4 ohm subwoofers, the LC-1.800 amplifier 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): 60.3665 Hz Piston Area (Sd): 0.0194 m2 Force Factor (BL): 11.3310 T.m Mechanical Q Factor (Qms): 5.4933 Electrical Q Factor (Qes): 0.8733 Total Q Factor (Qts): 0.7535 Sensitivity 1W/M (SPL): 81.9876 Mechanical Compliance (Cms): 0.0752 mm/N Moving Mass (Mms): 92.3784 g Linear Excursion (Xmax): 8.5 mm Volume Acoustic Compliance (Vas): 3.9378 Ltr/0.1390 Cu ft Reference Efficiency (NO.): 0.0952% RMS Power (Pe): 350 Watts Frequency Response: 30-500 Hz Voice Coil Diameter: 2.0 in/50.8 mm Displacement: 0.05 cu ft/1.44Ltr In the Box: SPK-8S4 Subwoofer Manual Dimensions: Overall Dimensions: 23.00″ W × 11.50″H × 12.00″D Cut Out Diameter: 7.25 in/184 mm Mounting Depth: 4.291in/109 mm Mounting Height (w/o Grille): 0.55in/14mm Mounting Height (w/ Grille): 1.18in/30mm Motor Diameter (w/ Cover): 5.55in/141mm Weight: 7lbs Ported Enclosure: External Dimensions: 23.00″ W × 11.50″H × 12.00″D Net Internal Volume: 0.89 ft3 Total Internal Volume: 1.22 ft3 Gross External Volume: 1.84 ft3 Material Thickness: 0.75″ Tuning Frequency: 40 Hz Port Area: 17.50 inch2 Port Inlet: 1.75″W×10.00″H Port Length: 28.00″ F3 (Hz): 34 Sealed Enclosure: External Dimensions: 14.50″ W × 10.00″H × 10.00″D Net Internal Volume: 0.49 ft3 Total Internal Volume: 0.54 ft3 Gross External Volume: 0.84 ft3 Material Thickness: 0.75″ F3 (Hz): 69.04 Qtc: 0.86 (Note: Enclosure size recommendations exclude driver and/or port displacement)