QSC ISA280 2 Channel Power Amplifier
Part # ISA280
Model # ISA280

This QSC ISA280 2 Channel Power Amplifier includes a selectable high-pass filters 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.

Availability: Usually arrives in 5-9 business days.

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Description

Details

This QSC ISA280 2 Channel Power Amplifier includes a selectable high-pass filters 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. Selectable high-pass filters are included to protect speakers and prevent speaker transformer saturation with minimal effect on program material. Versatile loading options and a comprehensive feature set make the ISA Series a rugged, cost-effective power solution for any permanently installed sound system.

The ISA Installed System Amplifiers are designed to meet the needs of sound system designers and contractors worldwide. Three models feature isolated 25, 70, and 100 volt outputs for distributed sound systems, while four low impedance models are rated for 2 ohm operation.

Features

Features

  • 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
  • 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
Specification
Stereo Mode Both Channels Driven
8 Ohms
20 Hz-20 kHz 0.1% THD185W
4 Ohms
20 Hz-20 kHz 0.1% THD280W
2 Ohms
1 kHz 1% THD430W
Bridged Mono Mode
8 Ohms
1 kHz 0.1% THD600W
4 Ohms
1 kHz 1% THD830W
XF Output Power, Bridged Mono Mode
Signal to Noise (20 Hz-20 kHz)100 dB
Distortion (SMPTE-IM)Less than 0.01%
Input Sensitivity @ 8 ohms1.15v(+3.4 dBu)
Voltage Gain @ 8 ohms33.4x(30.5 dB)
Output CircuitryClass AB
Distortion (Typical)
20 Hz-20 kHz: 10 dB below rated powerLess than 0.03% THD, 4 ohms and 8 ohms
1.0 kHz and below: full rated powerLess than 0.03% THD, 4 ohms and 8 ohms
Frequency Response20 Hz-20 kHz, +0/-1 dB; -3 dB points: 5 Hz and 50 kHz
Damping Factor (direct outputs)Greater than 200 at 8 ohms, ISA 1350 greater than 250
Input Impedance10 k ohms unbalanced, 20 k ohms balanced
Input Clipping10 Vrms (+22 dBu)
CoolingContinuously variable speed fan, back-to-front air flow
Amplifier ProtectionFull short circuit, open circuit, thermal, ultrasonic, and RF protection
Power Requirements120, 230, VAC, 50-60 Hz
Dimensions (H x W x D)5.25" (133 mm) x 19" (483 mm) x 15.9" (404 mm)
Net Weight36 lbs (16.3 kg)
Shipping Weight42 lbs (19.1 kg)
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