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ISIS 122M and ISIS W-122M Specifications
Full Range Specifications (Crossover Mode switch set to Full Range, Passive)
Frequency Range (free field) Frequency Response (-6 dB) 60-19k Hz
Usable Frequency Range (-10 dB) 50-20k Hz
Maximum Output
Calculated Continuous rms Output 120 dB SPL
Calculated Maximum Peak Output 126 dB SPL
Continuous Noise Exposure Level 119 dBA SPL
Impedance
Nominal 8 ohms
Minimum 6.8 ohms @ 15k Hz
Maximum 58 ohms @ 30 Hz
Power Rating
rms Power Handling 350 Watts, 100hrs, IEC 268-5, 50-20kHz, 6 dB crest factor
Recommended Amplifier Power 700 Watts
Sensitivity
1 W, 1 m free field 95 dB SPL
Nominal Coverage, -6 dB Conical, 60°
Directivity Index & Q Frequency (Hz) DI (dB) Q
500 4.4 2.8
1000 7.9 6.1
2000 9.5 8.8
4000 12.0 15.7
8000 11.2 13.2
16000 9.6 9.1
Bi-Amp Specifications (Crossover Mode switch set to Bi-Amp, LF= low frequency transducer, HF= high frequency transducer)
Frequency Range (free field) LF HF
Frequency Response (-6 dB) 70-3.9k Hz 600-19k Hz
Usable (-10 dB) 50-4k Hz 500-20k Hz
Maximum Output
Calculated Continuous rms Output 121 dB SPL 127 dB SPL
Calculated Maximum Peak Output 127 dB SPL 133 dB SPL
Continuous Noise Exposure Level 120 dBA SPL
Impedance
Nominal 8 ohms 8 ohms
Minimum 7.9 ohms @ 305 Hz 8.5 ohms @ 4k Hz
Maximum 52 ohms @ 32 Hz 69.0 ohms @ 450 Hz
Power Rating
rms Power Handling (2 hrs., 6 dB crest factor, within usable freq. range) 350 W 80 W
Recommended Amplifier Power 700 W 160 W
Sensitivity
1 W, 1 m, free field, within usable freq. range 96 dB 108 dB
Bi-Amp with recommended DSP Parameters (QSC DSP configurations are available at the QSC website www.qscaudio.com)
Frequency Range (free field)
Frequency Response (-6 dB) 55-19k Hz
Usable (-10 dB) 45-20k Hz
Directivity Index & Q (free field) Frequency (Hz) DI (dB) Q
500 4.5 2.8
1000 12.2 16.4
2000 9.7 9.3
4000 12.3 17.7
8000 11.0 12.5
6000 9.8 9.6
Physical
Weight Cored Composite: 15.4 kg net, 18.6 kg gross (34 lbs. net, 41 lbs. gross)
Wood: 23.6 kg net, 26.8 kg gross (52 lbs. net, 59 lbs. gross)
Specifications are subject to change without notice.