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ARCHITECTS & ENGINEERS SPECIFICATION
The loudspeaker system shall be a low frequency multi-
purpose type consisting of a 15 inch / 380 mm cast frame
loudspeaker component with a weather resistant cone.
The internal passive crossover network shall be a
switchable dual-section, 12 dB/octave slope low pass and
12 dB/octave slope high pass with an electro-acoustic
crossover frequency of 200 Hz. The loudspeaker system
shall have an operating bandwidth of 48 Hz - 800 Hz with
a sensitivity of 100 dB when measured at a distance of one
meter. The power handling capability shall be 250 W AES
(1,000 W peak). Nominal impedance shall be 8 ohms with
a minimum impedance of 6.5 ohms at 45 Hz. The unit
shall be a Vented Enclosure, constructed of 18 mm Poplar
plywood painted charcoal grey or white with a cloth
covered metal grille. The cabinet shall include integral
suspension points. Forged shoulder machinery eye bolts
shall be included to facilitate the suspension of the
speaker system. The dimensions shall be 30.50 inches high
by 20.00 inches wide by 16.25 inches deep. The
loudspeaker system shall weigh 75 pounds (34.1 kg). The
loudspeaker system shall be the Altec Lansing Professional
model LF115-8A.
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