50° x 50° and 80° x 50°
throat diameter… 1.4" Directivity…constant Material… PU w x h x d…23 x 23 x 16,2 cm weight…0,75 kg
255 with B&C DE920 1W 1m
258 with DE920
red: 0.1 oct. smoothed
255 red 258 green
Difference
258 horizontal and vertical
255 horizontal and vertical