MATERIAL:

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

SPECIFICATIONS:

• DC resistance (Rdc): 3,74 Ω
• Nominal impedance (ZN): 4 Ω
• Resonance frequency (fs): 35,57 Hz
• Voice coil diameter: 2,5 inch
• Mechanical Q factor (Qms): 6,16
• Electrical Q factor (Qes): 0,49
• Total Q factor (Qts): 0,46
• Moving mass (Mms): 121,6 g
• Effective piston area (Sd): 346 cm²
• Mechanical resistance (Rms): 4,79 kg/s 
• Compliance (Cms): 0,16 mm/N 
• Force factor (BL): 13,82 Tm 
• Equivalent air volume (Vas): 27,69 dm³
• SPL 2,83V/1m: 92,2 dB