QSC Audio ISA 500Ti - Manual (Page 10)

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Specifications: ISA 280, ISA 450, ISA 750, and ISA 1350
OUTPUT POWER in watts ISA280 ISA 450 ISA 750 ISA 1350
FTC:
8 ohms, 2 channels driven 185 260 450 800
(20 Hz - 20 kHz, 0.1% THD)
4 ohms 2 channels driven
280 400 650 1300
(20 Hz - 20 kHz, 0.1% THD)
EIA:
16 ohms, 1 channel driven 100 140 250 475
(1 kHz, 0.1% THD)
8 ohms, 1 channel driven
200 280 475 850
(1 kHz, 0.1% THD)
4 ohms, 1 channel driven
300 450 750 1400
(1 kHz, 0.1% THD)
2 ohms, 2 channels driven
430 700 1200 2000
(1 kHz, 1.0% THD)
Bridged Mono:
16 ohms 370 520 900 1600
(20 Hz - 20 kHz, 0.1% THD)
8 ohms
600 900 1500 2800
(1 kHz, 0.1% THD)
4 ohms
830 1400 2400 4000
(1 kHz, 1.0% THD)
FREQUENCY RESPONSE +0.0, -1.0 dB: 20 Hz to 20 kHz (LF filter OFF, at -10 dB from rated power), -3 dB points: 5 Hz and 50 kHz.
DAMPING FACTOR >200 at 8 ohm load >200 at 8 ohm load >200 at 8 ohm load >250 at 8 ohm load
INPUT SENSITIVITY +3.43 dBu (1.15 Vrms) +2.81 dBu (1.07 Vrms) +2.81 dBu (1.07 Vrms) +4.08 dBu (1.24 Vrms)
VOLTAGE GAIN 30.5 dB (33.4 x) 33.0 dB (44.7 x) 35.0 dB (56.2 x) 36.1 dB (64.0x)
OUTPUT CIRCUIT TYPE AB AB H 2-tier H 3-tier
CURRENT CONSUMPTION (Ampere, rms, both channels driven, 120 VAC*)
Idle 0.5 0.5 0.6 1.3
1/8 power**, 8 ohms 3.0 3.7 4.0 6.2
1/8 power**, 4 ohms 4.5 6.0 6.3 9.9
1/8 power**, 2 ohms 6.5 9.3 9.2 14.0
* NOTE: for 240 VAC models, multiply all values by 0.5 (one-half).
** NOTE: 1/8 power is representative of typical program material with occasional clipping.
WEIGHT 36 pounds (20.0 kg) 36 pounds (20.0 kg) 47 pounds (25.0 kg) 68 pounds (30.8 kg)
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE