Frequency Response, 1 meter
on-axis, swept-sine in anechoic
environment:
47 Hz - 18.5 kHz (±3 dB)
Usable Low Frequency Limit
(-10 dB point):
38 Hz
Power Handling:
Full Range:
750 w continuous
1,500 w program
3,000 w peak
Low Frequency Section:
600 w continuous
1,200 w program
2,400 w peak
High Frequency Section:
100 w continuous
200 w program
400 w peak
Sound Pressure Level, 1 Watt, at
1 meter in anechoic
environment:
Full Range:
95.0 dB SPL, (2.83 V input)
Low Frequency Section:
98.0 dB SPL, (2.83 V input)
High Frequency Section:
109.0 dB SPL, (2.83 V input)
Maximum Sound Pressure Level
(1 meter):
Full Range:
124.0 dB SPL continuous
130.1 dB SPL peak
Low Frequency Section:
125.8 dB SPL continuous
131.8 dB SPL peak
High Frequency Section:
129.0 dB SPL continuous
135.0 dB SPL peak
Radiation Angle, measured at
-6 dB point of polar response:
500 Hz – 1.6 kHz:
Horiz. 95o± 20o
Vert. 100o± 10o
1.6 kHz - 5 kHz:
Horiz. 95o± 20o
Vert. 50o± 15o
5 kHz - 16 kHz:
Horiz. 55o± 5o
Vert. 35o± 5o
Directivity Factor, Q (Mean):
16.35 ± 9.58
Directivity Index, Di (Mean):
11.25 dB ± 2.93 dB
Transducer Complement:
Low Frequency Section:
1x 15 in. Woofer, Vented
1508-8 Cu
High Frequency Section:
1x 1.6 in. Exit/100 mm Voice Coil
Compression Driver on Quadratic
Throat Waveguide
44 XT (w/o adapter) on CH-642qt
Box Tuning Frequency:
Low Frequency Section: 50 Hz
Harmonic Distortion:
1% rated power
2nd Harmonic:
100 Hz: 1.34%
1 kHz: 0.24%
SPECIFICATIONS
ILS™1564