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ISA 750

The QSC ISA-750 is a 3RU rackmount power amplifier designed specifically for sound contractors as a low impedance solution rated for 2-ohm operation at 1200 watts per side, or 450 watts at 8 ohms. The versatile loading options, feature set and protection circuitry, in addition to the built-in HD-15 DataPortV2 DSP interface capability.

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FEATURES

High output stereo power amplifier low-impedance contractor installation applications

Rear panel gain controls for tamper resistant operation with 2 dB detents for quick and repeatable settings

DataPort V2 HD-15 connector for use with DPV2-compatible external signal processing accessories

Full short circuit, open circuit, thermal, ultrasonic and RF protection

Independent defeatable clip limiters for reduced distortion, selectable 30Hz or 70Hz high-pass filters protect speakers and prevent speaker transformer saturation

Front panel indicators include power, signal, and clip; Stereo, Bridge and Parallel operating modes

Automatic variable-speed fan for quiet normal operation with maximum cooling, rear-to-front air flow

XLR and detachable Euro style input connectors, covered barrier strip output connectors with full safety agency 

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SPECIFICATIONS

Power RatingStereo @ 2 ohms: 1200W per channel
Stereo @ 8 ohms: 450W per channel
Bridged @ 8 ohms: 1500W
Damping Factor>200 @ 8 ohms
Input Sensitivity1.07Vrms
Input Impedance10 kOhm/20 kOhm (unbalanced/balanced)
Gain35dB
Frequency Response20Hz to 20kHz, +/-1dB
Signal-to-Noise Ratio100dB (20 Hz - 20 kHz)
Total Harmonic Distortion (THD)<0.03%, 4 and 8 Ohms, 20 Hz - 20 kHz, 10 dB below rated power
Input Connections2 x 3-pin XLR Female, Balanced
2 x 3-pin Detachable EuroBlock
1 x HD-15 DataPortV2
Output Connectors2 x Covered Barrier Strips
Controls Front Panel1 x Power Switch
Controls (Rear)1 x 10-Position DIP Switch Set
2 x Ch.1, 2 Gain Knobs
Indicators2 x Red Clip LED
2 x Green Signal LED
1 x Green Power LED
CoolingContinuously variable speed fan, back-to-front air flow
Power Consumption0.6A at idle
4.0A at 1/8 Power, 8 ohms
9.2A at 1/8 Power, 2 ohms
Dimensions19 x 5.25 x 15.9" (483 x 133 x 400mm)
Weight47 lb (21 kg)
SpecialtiesStable into reactive or mismatched loads
Rear Panel Controls
Comprehensive Protection Circuitry
Power RatingStereo @ 2 ohms: 1200W per channel
Stereo @ 8 ohms: 450W per channel
Bridged @ 8 ohms: 1500W
Damping Factor>200 @ 8 ohms
Input Sensitivity1.07Vrms
Input Impedance10 kOhm/20 kOhm (unbalanced/balanced)
Gain35dB
Frequency Response20Hz to 20kHz, +/-1dB
Signal-to-Noise Ratio100dB (20 Hz - 20 kHz)
Total Harmonic Distortion (THD)<0.03%, 4 and 8 Ohms, 20 Hz - 20 kHz, 10 dB below rated power
Input Connections2 x 3-pin XLR Female, Balanced
2 x 3-pin Detachable EuroBlock
1 x HD-15 DataPortV2
Output Connectors2 x Covered Barrier Strips
Controls Front Panel1 x Power Switch
Controls (Rear)1 x 10-Position DIP Switch Set
2 x Ch.1, 2 Gain Knobs
Indicators2 x Red Clip LED
2 x Green Signal LED
1 x Green Power LED
CoolingContinuously variable speed fan, back-to-front air flow
Power Consumption0.6A at idle
4.0A at 1/8 Power, 8 ohms
9.2A at 1/8 Power, 2 ohms
Dimensions19 x 5.25 x 15.9" (483 x 133 x 400mm)
Weight47 lb (21 kg)
SpecialtiesStable into reactive or mismatched loads
Rear Panel Controls
Comprehensive Protection Circuitry

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