MATERIAL:

• Cone: Paper
• Spider: Nomex
• Surround: Foam
• Coil former: Aluminum
• Basket: Aluminum
• Dust Cap: PP

SPECIFICATIONS:

• DC resistance (Rdc): 3,71 Ω
• Nominal impedance (ZN): 4 Ω
• Resonance frequency (fs): 31,40 Hz
• Voice coil diameter: 3 inch
• Mechanical Q factor (Qms): 4,92
• Electrical Q factor (Qes): 0,63
• Total Q factor (Qts): 0,45
• Moving mass (Mms): 149,97 g
• Effective piston area (Sd): 514 cm²
• Mechanical resistance (Rms): 6,54 kg/s 
• Compliance (Cms): 0,17 mm/N 
• Force factor (BL): 14,37 Tm 
• Equivalent air volume (Vas): 63,57 dm³ 
• SPL 2,83V/1m: 94,2 dB