QSC ISA450 Two-Channel 260 Watt / Ch @ 8 ohms 425 Watt / Ch @ 4 ohms Power Amplifier

 

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Dale #:QSC-ISA450

Availability: In Stock

Available for immediate shipment and pick-up from our Jamaica, New York location. In-store pick-up is available Monday through Friday from 8:30 am to 5:30 pm
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  • Designed as a cost-effective solution specifically for sound contractors, the ISA 450 features 425 Watts per channel at 4 Ohms. Versatile loading options and a comprehensive feature set make the ISA Series a rugged, cost-effective power solution for any permanently installed sound system.

    Features
    • Four models for low-impedance applications
    • Rear panel gain controls for tamper resistant operation with 2 dB detents 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 protect speakers and prevent speaker transformer saturation with minimal effect on program material (30 Hz or 70 Hz on non-"Ti" models, 50 Hz or 75 Hz on "Ti" models)
    • Front panel indicators include power, signal, and clip
    • Covered barrier strip output connectors for safety agency compliance
    • Automatic variable-speed fan for quiet normal operation with maximum cooling on demand
    • Rear-to-front air flow keeps equipment racks cool
    • Stereo, Bridge, or Parallel operating modes
    • Comprehensive protection circuitry including DC, infrasonic, thermal overload and short circuit protection
    • 3-year warranty plus optional 3-year extended service contract
    • Simple barrier strip connection determines output mode

    Housed in a rugged 3-U chassis, it features rear panel gain controls for tamper resistant operation with 2 dB detents for quick and repeatable settings. Inputs include both XLR and detachable Euro-style connectors. Outputs feature covered barrier strip connectors for safety agency compliance, and for added versatility, a DataPort V2 (Version 2) terminated with an HD-15 connector is provided for use with DPV2-compatible signal processing accessories such as the XC-3 Crossover, SF-3 Subwoofer Filter, LF-3 Low Frequency Filter and the DSP-3 with external power supply.

    Selectable high-pass filters are included to protect speakers and prevent speaker transformer saturation with minimal effect on program material. The ISA Series provide additional protection circuitry including DC, infrasonic, thermal overload, RF and short circuit protection.

  • Stereo Mode (both channels driven) Continuous average output power per channel
    8Ohms / 20 Hz - 20 kHz / 0.1% THD260 W
    4Ohms / 20 Hz - 20 kHz / 0.1% THD 425 W
    2Ohms / 1 kHz / 1% THD700 W
    Bridge Mono ModeContinuous average output power
    8Ohms / 1 kHz / 0.1% THD900 W
    4Ohms / 1 kHz / 1% THD 1400 W
    Signal to Noise (20 Hz - 20 kHz)100 dB
    Distortion (SMPTE-IM)< 0.01%
    Input Sensitivity at 8Ohms1.07V (+2.8 dBU)
    Gain at 8Ohms44.7x (33 dB)
    Output CircuitryAB
    Distortion (typical)
    20 Hz - 20 kHz: 10 dB below rated power< 0.03% THD / 4Ohms and 8Ohms
    1.0 kHz and below: full rated power< 0.03% THD / 4Ohms and 8Ohms
    Damping Factor (direct outputs)> 200 at 8Ohms / ISA1350: > 250
    Output Regulation (isolated outputs)< 1.5 dB
    Input Impedance10k ohms unbalanced, 20k ohms balanced
    Input Clipping10 Vrms (+22 dBu) / ISA1350: 4.53 Vrms (+15.3 dBu)
    CoolingContinuously variable speed fan, back-to-front air flow
    Connectors
    InputActive balanced, 3-pin euro style detachable terminal block and XLR (pin 2+)
    OutputCovered barrier strips, DataPort V2 / HD-15 connector
    Controls
    FrontAC switch
    RearCh. 1 & 2 gain knobs / 10-position DIP switch
    IndicatorsPower-On: Green LED | Signal: Green LED (1 per channel) | Protect: Red LED (ISA 1350) | Clip: Red LED (1 per channel)
    Amplifier ProtectionFull short circuit, open circuit, thermal, ultrasonic, and RF protection. Stable into reactive or mismatched loads
    Load ProtectionOn/off muting
    Triac crowbarISA750, ISA1350 and ISA800Ti
    AC couplingISA280, ISA300Ti, ISA450, ISA500Ti
    Dimensions (HWD)5.25 (13.3 cm) 3 rack spaces x 19 (48.3 cm) rack mounting x 15.9 (40 cm) deep from front mounting rails
    Weight
    Net42 lbs (19 kg)
    Shipping48 lbs (22 kg)
    Power Requirements100, 120, 230 VAC, 50 - 60 Hz
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