awnings
b and c me20 5.7 in x 5.7 in horn flare w 1 in throat entry
1 in throat entry90 degrees x 60 degrees nominal coverageexponential flarevery good loading down to 1.5 khzthroat diameter25 mm 1.0 in nominal coverage horizontal90 degreesnominal coverage vertical60 degreescutoff frequency1 .5 khzmaterialcast aluminiumdimensions145x145x90 mm 5.7 x5 .7 x3 .6 in