ERFW8D4 : 8” Diecast 4 Ohm DVC Shallow Subwoofer

Features

▪ High Temp Voice Coil Wire Around Vented KSV Former
▪ Radial Basket Vents for Voice Coil Cooling
▪ Large Gauge Push Button Speaker Wire Terminals
▪ Proprietary Injection Molded Polypropylene Cone
▪ High Excursion Foam Surround
▪ Extended Linear Roll Progressive Dampener
▪ Stealth Gasket for Custom Mounting Applications
▪ Anti-Resonance Heavy Gauge Shallow Die-Cast basket
▪ Optimized Motor for Low Frequency Response

Specifications

▪ Nominal Power Handling: 350 Watts
▪ Peak Power Handling: 700 Watts
▪ Impedance: Dual 4Ω Voice Coil
▪ Free Air Resonance (Fo) 47.090 Hz
▪ D.C. Voice Coil Resistance (Re): 6.400 Ω
▪ Mechanical Quality Factor (Qms): 5.232
▪ Electrical Quality Factor (Qes): 0.861
▪ Total Quality Factor (Qts): 0.740
▪ Equivalent Air Volume (Vas): 6.733 L
▪ Mass of Diaphragm/Coil (Mms): 97.398 g
▪ Force Factor (BL): 14.632 TM
▪ Sound Pressure Level (SPL): 81.0 dB
▪ Effective Diaphragm Area (Sd): 20.106m
▪ Compliance of Mechanical Suspension (Cms): 117.284 mm/N
▪ Moving Mass of Diaphragm (Mmd): 95.759 m Kg
▪ MMd: 90.000g

DIMENSIONS

▪ Overall Diameter: 8.78"/ 223 mm
▪ Mounting Depth: 3.11"/ 79 mm
▪ Cutout Diameter: 7.30"/ 185.5 mm