B2 Audio REFERENCE Series Pair of 8" 4-Ohm SVC 180W RMS Loudspeaker/Woofer REF8W

Features:

• Nominal Chassis Diameter: 8" / 200 mm
• Resonance (natural) Frequency: 48 Hz
• Winding Material: GEI (inside-outside)

Specifications (Per Speaker):

• RMS Power Handling: 180W
• Maximum Power Handling: 360W
• Nominal Impedance: 4 Ohm
• Voice Coil Diameter: 2" / 50 mm
• Magnet Weight: 54 Oz
• Frequency Response: 48 - 3500 Hz
• Sensitivity: 95 dB
• Push Terminal Wire Size: 12 GA

Thiele and Small Parameters:

• Free Air Resonance (Fs): 48 Hz
• Resistance (Re): 3.6 Ohm
• Mechanical Factor (Qms): 8.3
• Electrical Factor (Qes): 0.16
• Total Factor (Qts): 0.15
• Equivalent Volume (Vas): 21 L
• BL Factor (BL): 14 T/m
• Moving Mass (Mms): 32 grams
• Excursion Max (Xmax): 5 mm
• Sd: 227 cm^2
• Efficiency: 1.6 %
• Le: 0.2 mH
• EBP: 320

Measurements (Per Speaker):

• Overall Diameter: 8" / 210 mm
• Mounting Diameter: 6.9" / 177 mm
• Bolt Pattern Diameter: 7.6" / 197 mm
• Overall Depth: 3.95" / 100.33 mm
• Mounting Depth: 3.5" / 88.9 mm
• Sold as: (Pair)