✦ Verified product
Alpine SBR-S8D4.2
AUD 399.95
Progressive Car Sound AU
Verified independent store
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R-Series 8” Compact Subwoofer Features Fill 1 900W Peak Power 300W RMS Power High Amplitude Multi Roll (HAMR) surround Frequency Response: 28Hz – 400Hz USA Designed Slot Ported Sub
woofer Enclosure Heavy Gauge Spring Terminals Dimensions: (L x W x H cm) 49 x 29 x 16 R2-W8D4 Pre-installed Grille Included and Pre-Installed Specifications Fill 1 Subwoofer Size: 8″ Power Handling (RMS/Peak): 350W/1000W Power Range (RMS): 150W-350W Frequency Response (Hz): 28Hz-200Hz Diaphragm Material: Kevlar-Reinforced Pulp Fiber Diaphragm Design: 2-piece structural parabolic Surround Material: Injection molded santoprene Surround Design: High Amplitude Multi-Roll (Patent Pending) Spider Material: Nomex Spider Design: Progressive Voice Coil Material: 180˚C High Temp Wire on Spiral Cut Aluminium Former Voice Coil Design: 4-Layer Dual Voice Coil Motor Structure Pole Geometry: Compound Radius Curve Motor Structure Configuration: Integration Shorting Sleeve with Radial Vented VC Head Transfer Magnet Material: High-Power Strontium Ferrite Magnet Configuration: 6-Piece (8″) / 10-Piece (10″/12″) Radially Segmented, Double Stacked Frame Material: Cast Aluminium Frame Design: Single-Piece Casting with Airflow Management System Terminals Layout: One sided Terminals Design: Heavy Duty 8ga, Push with housing, Banana Sockets for VC Configuration Jumpers Tinsel Leads Design: Reinforced Layer Spider Integration Gasket Design: Concealed Mount Gasket System and Integrated Grill Ready ELECTRO-MECHANICAL PARAMETERS Nominal Impedance: 2ohms+2ohms Frequency Response: 28-200Hz Sensitivity (SPL @ 1W/1m): 83.5dB D.C Coil Resistance (Re): 1.85ohms +1.85ohms Inductance (Le) 1kHz/20kHz: 0.87mH/0.30mH Free Air Resonance (Fs): 38Hz Equivalent Stiffness (Vas): 12L (0.42 ft³) Mechanical Q (Qms): 7.8 Electrical Q (Qes): 0.55 Total Q (Qts): 0.50 Xmax10 (One-Way Xmax @ 10% Distortion): 14mm Mechanical Excursion, Peak-to-Peak: 52mm Gap Height (Hag): 10mm Coil Height (Hvc): 29mm Cone Area (Sd): 201 cm² Voice Coil Diameter: 40mm (1.6″) Magnet Weight: 52oz
