Frequency Response (measured in far field, calculated to one meter on axis, swept sine wave, one watt into MB section –4.00 V at 500 Hz, anechoic environment: see Figure 2): 48-16,000 Hz
Crossover Frequency: 3-way: 125 and 1,760 Hz 2-Element Line Array: 140/550 and 1,760 Hz
Maximum Long-Term-Average Midband Acoustic Output, LF/MB/HF: 16/54/15 acoustic watts
Sensitivity (SPL at one meter, indi- cated input power, anechoic environ- ment, average level),
LF/MB/HF, 1/1/1 watt: 93.5/107.0/112.0 dB
600/300/75 watts: 121.3/131.8/130.8 dB
Beamwidth (angle included by 6-dB- down points on polar responses, indicated one-third-octave bands of pink noise; see Figures 1 and 3),
Horizontal, 800-16,000 Hz: 60° (+20° , –10°)
Vertical, 800-16,000 Hz: 40° (+10° , –2°)
Directivity Factor, Rθ (Q), 800-16,000 Hz Average (see Figure 4):
21.4 (+7.9, –4.6)
Directivity Index, D , 800-16,000 Hz i
Average (see Figure 4): 13.3 dB (+1.4 dB, –1.1 dB)
Distortion (115 dB SPL at one meter, shaped spectrum; see Figure 5),
Second Harmonic, 100 Hz: 1.0%
500 Hz: 0.7%
2,000 Hz:1.6%
5,000 Hz: 1.1%
Third Harmonic, 100 Hz:0.8%
500 Hz: 0.9%
2,000 Hz: <0.1%
5,000 Hz: <0.1%
Transducer Complement, HF: DH6-16 driver, HP-type 60° x 40° horn
MB: DL-type 12-in. woofer, 60° x 40° horn
LF: EVX-180B 18-in. woofer
Impedance (see Figure 6), Nominal,
LF/MB/HF: 8/16/16 ohms
Minimum, LF/MB/HF: 7.7/8.7/13.1 ohms
Input Connections: Two Neutrik NL8MPR Speakon® connectors paralleled
Recommended Amplifier Power, HF: 125-250 watts
MB: 300-600 watts
LF: 600-800 watts
Enclosure Construction, Enclosure Shell:
18 mm, 13-ply birch plywood
Finish: Black textured paint
Grille: Vinyl-coated steel with foam
Rigging: Two-point heavy-duty L-track system, accepts New Haven NH32102-2 double-stud fittings, or New Haven NH8192-2S or Ancra 42546-10 single-stud fittings with safety pins