TECHNICAL PARAMETERS : 

Nominal Impedance 8 Ohm
Minimum Impedance 6.9 Ohm
AES Power Handling ( 1) 60 W
Maximum Power Handling ( 2) 120 W
Minimum Crossover Frequency ( 3) 1.3 kHz
Sensitivity ( 1W/ 1m) ( 4) 109 dB
Frequency Range 1÷ 20 kHz
Voice Coil Diameter 44 mm ( 1.73 in) 
Winding Material Al
Former Material Kapton
Diaphragm Material Titanium
Diaphragm Shape Dome
Winding Depth 1.9 mm ( 0.07 in) 
Magnetic Gap Depth 2.65 mm ( 0.10 in) 
Flux Density 1.9 T
Magnet Neodymium Ring
Re 5.8 Ohm
Phase Plug Design Annular
NET Air Volume filled by HF Driver 0.35 dm^ 3 ( 0.012 ft^ 3) 

NOMINAL SPECIFICATIONS : 

Throat Diameter 25.4 mm ( 1 in) 
Overall Diameter 102 mm ( 4.02 in) 
180° Mounting Holes Diameter ( 2xM6) 76 mm ( 2.99 in) 
120° Mounting Holes Diameter ( 3xM6) 57 mm ( 2.24 in) 
Depth 54 mm ( 2.13 in) 
Net Weight 1.4 Kg ( 3.1 lb) 
Shipping Box 147 x 130 x 82 mm
( 5.8 x 5.1 x 3.2 in) 
Shipping Weight 1.5 Kg ( 3.3 lb)