B-18DP Architect's and Engineer's Specifications
The system shall be of the self-powered bandpass subwoofer type consisting of one 18" (457mm) low frequency loudspeaker. The integrated power amplifier module shall provide Class D amplification, output limiting, and equalisation. Performance specifications of a typical production unit shall meet or exceed the following: Frequency response, measured with swept sine wave input, shall be flat within ±4dB from 40Hz to 150Hz. Maximum SPL (peak) measured with music program at stated amplifier power shall be 136dB. Dimensions: 768mmH x 574mmW x 700mmD (30.2"H x 22.6"W x 27.6"D). Weight: 67.5kgs (148.5lbs). The loudspeaker system shall be the Turbosound B-18DP. 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.