Electro-Voice 409 8-inch high-performance coaxial ceiling loudspeaker

Electro-Voice 409 is a two-way loudspeaker with 8-inch low-frequency cone and high temperature voice-coil assembly coaxially mounted with wide-dispersion cone tweeter. It utilises a single section crossover network, centred at 2500 Hz, providing 6 dB of attenuation for each element outside the operating range.