Constant Coverage HF Horn w/1 inch throat entry

Unique Eighteen Sound elliptical shape ESS Flat front and compact size Die-cast aluminum construction for best heat transfer Uniform on-axis and off-axis frequency response 80 Degrees x 60 Degrees horizontal and vertical constant coverage Improved structure strength by exclusive computer aided vibrational analysis Throat Diameter 25,4 mm 1 in Horizontal Coverage -6 dB 80 Degrees1 - -8 average range1,6kHz - 12,5kHz 1 in Vertical Coverage -6 dB 60 Degrees 18 - -7 average range1,6kHz - 12,5kHz Directivity Index 10 dB 1.3 - -0,4 average range 1.6kHz - 12.5kHz Usable Frequency Range Above 800 Hz Recomm. Cross.Frequency 1200 Hz or more Sensitivity 1 110 dB Frequency Range 1200 Hz - 20kHz Material Die-cast aluminum Mouth Height 215 mm 8,5 in Mouth Width 260 mm 10,2in Depth 126 mm 5 in Mouth Mounting Specs 4 M6 holes on the edge of rectangle with 214 mm x 169 mm 8,43 x 6,65 in sides Driver mounting specs 3 M5 holes on 0 57mm 2.24in - 4 M6 holes on 0 76mm 3in