Basket:  Aluminum
Cone:Titanium
Phase Plug : Aluminum

Size: 3.5"
Voice Coil:1"
Magnet : 8oz
Filter Capacitor:4.7uF/100W 
RMS Power: 50W
MAX Power: 100W
Nominal Impedance: 4 Ohm 
Frequency Response: 2Hz~20KHz
Sensitivity: 92dB