BRM4v2 is a loudspeaker pair with a lightweight and rugged design, delivering accurate sound reproduction and high power handling capability. Utilizing high-quality components and advanced technology, BRM4v2 will provide you with quality sound that you can rely on. Features: Nominal Diameter: 4" inch Nominal Impedance: 8 Ohm RMS Power: 100W Max Power: 225W Sensitivity (1w/1m): 85.6 dB +/- 3 dB Frequency Range: 174 - 16K Hz Voice Coil Diameter: 1" inch Voice Coil Length: 3/8" inch Air Gap Height: 1/4" inch Thiele & Small Parameters: Resonant Frequency, FS: 174 Hz D.C Voice Coil Resistance, Re: 5.6 Ohm Mechanical Quality Factor, QMS: 14.9 Electrical Quality Factor, Qes: 1.49 Total quality factor, Qts: 1.35 Equivalent Air Volume to Cms, Vas: 0.65L Mechanical Compliance, Cms: 184uM/N Mechanical Resistance, Rms: 0.33 kg/s BL Factor, BL: 4.29 N/A Effective Surface Area, Sd: 5 m M Linear Excursion, Xmax: 3/32" inch Materials: Basket: Steel Cone: Paper Surround: Trested Cloth Voice Coil Wire: CCAW Voice Coil bobbin: Kapton Magnet: Ferrite Mounting Information: Overall Diameter: 4-15/32" inch Bolt Circle Diameter: 4-3/32" inch Depth: 2-7/16" inch Net Weight: 0.8Kg (~1.76 lb)
