Audiocontrol SPK 8

The SPK 8 is an impressive 8" (20cm) subwoofer from Audiocontrol. With a design that offers high excursion for ultra-deep bass, a fiber matrix paper cone with mica coating, and a 3-layer high-temperature voice coil former, this subwoofer stands out. Additionally, it features a dual damping system for linear bass reproduction and a dual dust cap system to control cabinet compression. Furthermore, it includes an efficient high-performance motor design and the ability to remove the subwoofer grille. All these features make the SPK 8 a remarkable piece of audio quality and control. Features 8" (20cm) Subwoofer Design with high excursion for ultra-deep bass Fiber matrix paper cone with mica coating 3-layer high-temperature coil carrier Dual damping system for linear bass reproduction Double dust cap system for controlling housing compression Efficient High-Performance Engine Design Removable subwoofer grille included in delivery Technical Data Load capacity RMS 300 Watts Load capacity MAX 600 Watts Nominal impedance (Z) 2 Ohm / 4 Ohm Direct current resistance (Re) ]] 3.2 Ohm Resonant frequency (Fs) 60.3665 Hz Piston area (Sd) 0.0194 m2 Power 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 Comp (Cms) 0.0752 mm/N Moving mass (Mms) 92.3784 g Linear displacement (Xmax) . 8.5 mm Acoustic Volume Comp (Vas) 3.9378 L Reference Efficiency (NO.) 0.0952% RMS power (Pe) 350 watts Frequency response 30-500 Hz Winding coil diameter 50.8 mm Displacement 1.44Ltr Dimensions Overall dimensions: 214 mm  Cutout diameter: 184 mm Installation depth: 109 mm Mounting height (without grid): 14 mm Mounting height (with grid): 30 mm Motor diameter (with cover): 141 mm Bass reflex enclosure recommendation External dimensions: 584mm W × 292mm H × 304mm D Internal net volume: 25.2L Internal total volume: 34.54L External gross volume: 52.1L Material thickness: 21mm Sampling frequency: 40 Hz Port dimensions: 44.5mm × 254mm  Length of the connection: 711mm F3 (Hz): 34 Closed housing External dimensions: 368mm W × 254mm H × 254mm D Internal net volume: 13.8L Internal total volume: 15.29L External gross volume: 23.7L Material thickness: 21mm F3 (Hz): 69.04 Qtc: 0.86 *Enclosure size recommendations do not include driver and/or connection displacement.