P-Audio A- A-B Box (P1804000CA)
3.9" Large Format Voice Coil, 4000 Watts Peak Power Handling, Active Balanced Cooling, Ferrite Magnetics,
Precision Rectangular ribbon Wire, double spider Suspension, integrated demodulation rings, die cast aluminum chassis
Normal Impedance 8 Sensitivity 97 dB Frequency Range 30-500 Hz
Package Weight: 35.9 pounds