SU 650 Subwoofer Unit provides a solution for improving the low
frequency response to a public address system, extending the response
of the system to below 40 Hz.
unit features a high powered, long excursion loudspeaker driver
unit to maintain linear excursion during program peak and a 2nd
order crossover unit to enhance the efficiency of the loudspeaker
driver. The driver is housed in a tuned ported 4th order bandpass
enclosure constructed from 15 mm medium density fibre board which
has been designed to complement the tuned frequency of the system.
built-in line matching transformer makes the unit suitable for a
70 V and 100 V line distributed speaker system. A low impedance
model rated at 8 Ω is also available, modal SU 650L.