QSC Audio ISA 500T Manuel D’Utilisation

Low Impedance FTC:

8 ohms per channel (20-20k Hz., 0.1% THD)

185

260

450

4 ohms per channel (20-20k Hz., 0.1% THD)

280

425

650

Low Impedance EIA:

16 ohms (1 kHz., 0.1% THD, 1 channel driven)

100

140

250

8 ohms  (1 kHz, 0.1% THD, 1 channel driven)

200

280

475

4 ohms  (1 kHz, 0.1% THD, 1 channel driven)

300

500

750

2 ohms (1 kHz, 1% THD, both channels driven)

430

700

1200

Low Impedance Bridged Mono:

16 ohms, 20–20k Hz, 0.1% THD

370

520

900

8 ohms (1 kHz, 0.1% THD)

600

900

1500

4 ohms (1 kHz, 1% THD)

830

1400

2400

Distributed High Impedance:

70 volt (50 Hz - 16 kHz, 0.5% THD, per channel)

300

500

800

100 volt

300

500

800

140 volt (bridge)

600

1000

1600

200 volt (bridge)

600

1000

1600

DYNAMIC HEADROOM (all models)

2 dB at 4 ohms

DISTORTION (SMPTE-IM, all models)                                             LESS THAN 0.01%                                       LESS THAN 0.01%                                   LESS THAN 0.01%

FREQUENCY RESPONSE (all “T” models)

DIRECT OUTPUTS- -3 dB at 50 Hz to -0.5 dB at 20 kHz

(at 10 dB below rated output power)

DISTRIBUTED OUTPUTS- 50 Hz to 16 kHz, +0 dB, -3  dB

DAMPING FACTOR (all models)

Greater than >200 for 8 ohm load

SIGNAL to NOISE (unweighted, 20-20k Hz.)

-100 dB                                                      -100 dB                                                     -100 dB

VOLTAGE GAIN  (gain control set to 0 dB)

30.5 dB (33.4.X)

33.0 dB (44.7 X)

35.0 dB (56.2 X)

INPUT SENSITIVITY for rated power into 8 ohms

+3.43 dBu (1.15 Vrms)

+2.81 dBu (1.07 Vrms)                         +2.81 dBu (1.07 Vrms)

INPUT CLIPPING, Vrms (all models)

+22 dBu

INPUT IMPEDANCE (all models)

10k ohms unbalanced , 20k ohms balanced