TFM-420
Architects' and Engineers' Specifications
The loudspeaker shall be of the bi-amped, two-way type consisting of
one 305mm (12") low-frequency loudspeaker and one 2" exit neodymium
HF compression driver on a 40 degree by 60 degree horn. 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 90Hz to 16kHz. Dispersion at -6dB
points shall average 40 degrees horizontal x 60 degrees vertical.
Nominal impedance shall be LF: 8 ohms, HF: 8 ohms. Power handling
shall be LF: 400 watts rms, 800 watts program, 1000 watts peak; HF:
100 watts r.m.s., 200 watts program, 250 watts peak. Sensitivity
measured with 1 watt input at 1 metre distance on-axis, mean averaged
over stated bandwidth, shall be LF: 99dB; HF: 103dB. Maximum SPL
(peak), measured with music program at stated amplifier power, shall
be 136dB. Dimensions: 329mmH x 614mmW x 386mmD (13"H x 24.2"W x
15.2"D) Weight: 25.2 kg (55.4lbs) The loudspeaker shall be the
Turbosound TFM-420. 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.
