QSC ISA 280 - Page 11

11
EN
Specifications: ISA 300Ti, ISA 500Ti, and ISA 800Ti
OUTPUT POWER in watts ISA 300Ti ISA 500Ti ISA 800Ti
FTC:
8 ohms, 2 channels driven 185 260 450
(20 Hz - 20 kHz, 0.1% THD)
4 ohms 2 channels driven 280 400 650
(20 Hz - 20 kHz, 0.1% THD)
EIA:
16 ohms, 1 channel driven 100 140 250
(1 kHz, 0.1% THD)
8 ohms, 1 channel driven 200 280 475
(1 kHz, 0.1% THD)
4 ohms, 1 channel driven 300 450 750
(1 kHz, 0.1% THD)
2 ohms, 2 channels driven 430 700 1200
(1 kHz, 1.0% THD)
Bridged Mono:
16 ohms 370 520 900
(20 Hz - 20 kHz, 0.1% THD)
8 ohms 600 900 1500
(1 kHz, 0.1% THD)
4 ohms 830 1400 2400
(1 kHz, 1.0% THD)
Distributed High Impedance (per channel):
70 Volt per channel 300 500 800
(50 Hz - 16 kHz, 0.5% THD)
100 Volt per channel 300 500 800
(50 Hz - 16 kHz, 0.5% THD)
140 Volt bridged, single channel 600 1000 1600
(50 Hz - 16 kHz, 0.5% THD)
200 Volt bridged, single channel 600 1000 1600
(50 Hz - 16 kHz, 0.5% THD)
FREQUENCY RESPONSE
Direct Outputs -3.0, -0.5 dB: 50 Hz to 20 kHz (LF filter 50 Hz, 10 dB from rated power)
Isolated Outputs +0.0, -3.0: 50 Hz to 16 kHz (LF filter 50 Hz, at -10 dB from rated power)
OUTPUT REGULATION 1.5 dB no-load to full-load
INPUT SENSITIVITY
Direct Low Impedance Outputs +3.43 dBu (1.15 Vrms) +2.81 dBu (1.07 Vrms) +2.81 dBu (1.07 Vrms)
Isolated Distributed Line Outputs (Ti only) +2.20 dBu (1.00) Vrms) +1.80 dBu (0.95 Vrms) +1.80 dBu (0.95 Vrms)
Full load, 70/100V
VOLTAGE GAIN
Direct Low Impedance Outputs 30.5 dB (33.4 x) 33.0 dB (44.7 x) 35.0 dB (56.2 x)
OUTPUT CIRCUIT TYPE AB AB H 2-tier
CURRENT CONSUMPTION (Ampere, rms, both channels driven, 120 VAC*)
Idle 0.5 0.5 0.6
1/8 power**, 8 ohms 3.0 3.7 4.0
1/8 power**, 4 ohms 4.5 6.0 6.3
1/8 power**, 2 ohms 6.5 9.3 9.2
1/8 power**, 70V/100V 5.5 6.9 8.5
* 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 44 pounds (20.0 kg) 44 pounds (20.0 kg) 55 pounds (25.0 kg)
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE