NOMINAL SPECIFICATIONS : 

Type Plane Wave Guide
Throat Diameter 36.5 mm ( 1, 4 in) 
Frequency Range 0.8÷ 20 kHz
Recommended Crossover Freq. ( 1) 0.8 kHz
Horizontal Nominal Coverage ( -6dB) ( 2) 110° 
Material Al
Mouth Height 163 mm ( 6.4 in) 
Mouth Width 130 mm ( 5.1 in) 
Depth 200 mm ( 7.9 in) 
Mouth Mounting Holes ( 4x) 7 mm ( 0.28 in) 
Net Weight 1.4 Kg ( 3.1 lb) 
Shipping Box
( Single Carton Box) 232 x 179 x 142 mm
( 9.1 x 7.0 x 5.6 in) 
Shipping Weight 1.65 Kg ( 3.6 in) 
NET Air Volume filled by HF Horn 1.0 dm^ 3 ( 0.035 ft^ 3)