870qx

Coaxial-horn for 8" and 1" driver

directivity                   60° x 40°
range                    0.35 -20 kHz
size                  39 x 32 x 24 cm
weight                            3.3 kg
displaced volume                 11 l
suitable drivers:  B&C 8NSM64 or RCF MR8N301
and 1"-drivers of a diameter not exceeding 92 mm

Frequency response with a simple passive 12 db crossover

using B&C 8NSM64 and DE360     1W 1m

no impedance compensation, no equalizing

Graphs normalized

That is true