QSC ISA750 | 2 Channels Commercial Power Amplifier

ISA750 2 Channels Power Amplifier

Key Features

• Rear panel gain controls for tamper resistance; 2-dB detents allow for quick and repeatable settings.
• XLR and detachable Euro-style input connectors
• DataPort V2 for use with DPV2-compatible signal processing accessories (XC-3, SF-3, LF-3) and DSP-3/DSP-4 (with external power supply)
• Independent defeatable clip limiters for reduced distortion
• Selectable high-pass filters (30 Hz or 70 Hz) protect speakers and prevent speaker transformer saturation with minimal effect on program material
• Front panel LED indicators include power, signal, and clip
• Covered barrier strip output connectors for safety agency compliance
• Automatic on-demand variable-speed fan: quiet normal operation, with maximum cooling when needed
• Rear-to-front air flow helps keep equipment racks cool
• Stereo, bridge, or parallel operating modes
• Comprehensive protection circuitry including DC, infrasonic, thermal overload, and short circuit protection

Technical Specifications

OUTPUT POWER PER CHANNEL, STEREO MODE, both channels driven
8, 20 Hz-20 kHz 0.1% THD: 450 W
4, 20 Hz-20 kHz 0.1% THD: 650 W
2 1 kHz 1% THD: 1200 W
OUTPUT POWER, BRIDGED MONO MODE
8, 1 kHz 0.1% THD: 1500 W
4 1 kHz 1% THD: 2400 W
Signal to Noise (20 Hz-20 kHz): 100 dB
Distortion (SMPTE-IM): Less than 0.02%
Input Sensitivity @ 8 ohms:1.07 V (+2.8 dBu)
Maximum Voltage Gain: 56.2× (35 dB)
Output Circuitry: Class H, 2 tier
Damping Factor with 8 Load (direct outputs): Greater than 200; ISA 1350 greater than 250
Output Regulation (isolated outputs): Less than 1.5 dB
Input Impedance: 10 k unbalanced, 20 k balanced
Input Clipping:  10 V rms (+22 dBu)
Cooling: Continuously variable speed fan, back-to-front air flow
Controls:            
Front: AC switch
Rear: Ch. 1 and Ch. 2 gain knobs, 10-position DIP switch
Indicators:
PWR-ON: Green LED; SIGNAL: Green LED (1 per channel);
CLIP: Red LED (1 per channel)