Specs:

25 mm voice coil (woofer)

Neodymium magnet (tweeter) 

Silk dome tweeter

Pressed paper cone (woofer)

10Oz Ferrite magnet (woofer) 

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Nominal Impedance: 4 Ohm

Nominal Power Handling: 70 Watt

Transient Power: 140 Watt

Freq. Response: 60 Hz ~ 22 KHz

Sensitivity: 89 dB 1W/1m