Pioneer TS-W307D4 Parameters:
Power: 400W
Impedance: 2Ω
Resistane: 1.5Ω
Free-Air Resonance Frequency: 34.8Hz
Qms: 13.99
Qes: 0.54
Qts: 0.52
Vas: 40.8 liters
Cms: 0.133mm/N
Cone Area: ??? squared centimeters