B-15 Architect's and Engineer's Specifications
The system shall be of the subwoofer type consisting of one reflex loaded 15" (381mm) low frequency loudspeaker. Performance specifications of a typical production unit when used with a Turbosound LMS series digital loudspeaker management system shall meet or exceed the following: Frequency response, measured with swept sine wave input, shall be flat within ±4dB from 45Hz to 120Hz. Nominal impedance shall be 8 ohms. Power handling shall be 400 watts continuous, 800 watts program. Sensitivity, measured with 1 watt input at 1 metre distance on axis, mean averaged over stated bandwidth, shall be 100dB. Maximum SPL (peak) measured with music program at stated amplifier power shall be 132dB. Dimensions: 464mmH x 574mmW x 620mmD (18.3"H x 22.6"W x 24.4"D). Weight: 36.5kgs (80.3lbs). The loudspeaker system shall be the Turbosound B-15. No other loudspeaker shall be acceptable unless submitted data from an independent test laboratory verify that the above combined performance / size specifications are equalled or exceeded.