Architecture and Engineering Specifications
The loudspeaker shall be of the two-way bi-amp switchable passive type consisting of one common motor co-axial 14" (340 mm) LF driver and one 1.4" (36 mm) exit HF compression driver (3”/72mm Voice Coil). 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 ±3 dB from 60 Hz to18 kHz and within -10 dB from 55 Hz to 20 kHz. Nominal dispersion, at -6 dB points, shall average 40° H x 60° V. Nominal impedance shall be bi-amp mode: HF: 8 Ohms, LF: 8 Ohms & passive mode 8 Ohms. Power handling shall be HF: 80 Watts continuous, 320 Watts peak, LF: 400 Watts continuous, 1600 Watts peak. Sensitivity, measured on axis, mean averaged over the stated bandwidth, shall be HF: 106 dB, 1 Watt @ 1 metre, LF: 99dB, 1 Watt @ 1 metre. Maximum SPL of 138dB in Bi-Amp mode or 137 dB in passive mode (Average Peak level over overlap bandwidth. SPL level at 1 m under free field conditions, using pink noise with crest factor 4, with dedicated pre-set. Dimensions: 339mm high x 530mm wide x 563 mm deep (14.13 x 20.86 x 22.16"). Net weight: 20.5kg (45.2 lbs). The loudspeaker system shall be the Turbosound TQ14M.
No other loudspeaker shall be acceptable unless submitted data from an independent test laboratory verifies that the above combined performance/size specifications are equalled or exceeded.