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QSC ISA500TI Two-Channel Power Amplifier 260W at 8 ohm / 650W @4 ohm / 1200W @2 ohm / 800W @70V

 
  • Dale #:

    QSC-ISA500TI
  • 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

Description

ISA amplifiers are an ideal, cost-effective solution for fixed installation applications requiring low impedance or distributed loudspeakers. There are seven models in the line, four low impedance models (ISA 280, ISA 450, ISA 750, ISA 1350) rated down to 2-ohm loads and three “Ti” versions (ISA ... Read More

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Description

ISA amplifiers are an ideal, cost-effective solution for fixed installation applications requiring low impedance or distributed loudspeakers. There are seven models in the line, four low impedance models (ISA 280, ISA 450, ISA 750, ISA 1350) rated down to 2-ohm loads and three “Ti” versions (ISA 300Ti, ISA 500Ti, ISA 800Ti) featuring isolated transformers for 25, 70 and 100 volt distributed audio systems. The DataPort V2 Lite connection facilitates the use of amplifier accessories (XC-3, LF-3 and SF-3.) providing economical crossover and subwoofer filtering solutions.

Features:

  • Low-impedance outputs plus isolated 25, 70, and 100 volt outputs for distributed audio systems
  • 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 (50 Hz or 75 Hz) protect speakers and prevent speaker transformer saturation, with minimal effect on program material
  • Front panel 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
  • 3-year warranty plus optional 3-year extended service contract

The ISA 500Ti is rated at 260 watts RMS per channel into 8 ohms, 425 into 4 ohms (20 Hz-20 kHz, 0.1% THD). 2 ohm load rating is 700 watts RMS per channel (1 kHz, 1% THD). Bridged mono output produces 900 watts RMS into 8 ohms, 1,400 into 4 ohms (1 kHz, 1% THD). 70V rated output is 500 watts RMS per channel (50 Hz-16 kHz, 0.5% THD).

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 processingaccessories like the DSP-3. Selectable high-pass filters are included to protect speakers and prevent speaker transformersaturation with minimal effect on program material. The ISA Series amps provide additional protection circuitry including DC, infrasonic, thermal overload, RF and short circuit protection. Cooling is accomplished via an automatic variable speed fan, which pulls air from back to front.

As a 70- or 100-volt solution, the IISA-500Ti offers 500  watts of power. Housed in a rugged 3RU chassis, ISA and ISA-Ti amplifiers feature both XLR and detachable Euro-style (barrier) connectors for pre-planned installation, independent defeatable clip limiters for reduced distortion and comprehensive protection circuitry.

The ISA-Ti models can drive 8- or 4-ohm loads and 25, 70 and 100-volt distributed systems simultaneously, reducing the number of amplifier channels needed by allowing a limited number of distributed speakers to be powered by the same amp that is running the main system.

All ISA models offer rear-panel gain controls for tamper-resistant operation, with 2dB detents for repeatable settings, as well as QSC’s HD-15 DataPort (Version 2) for DataPort V2-compatible signal processing accessories.

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Product Specs

8 ohms 20 Hz-20 kHz 0.1% THD260W
4 ohms 20 Hz-20 kHz 0.1% THD425W
2 ohms 1 kHz 1% THD700W
XF OUTPUT POWER, STEREO MODE
70V or 100V 50 Hz-16 kHz 0.5% THD500W
25V 50 Hz-16 kHz 0.5% THD300W
BRIDGED MONO MODE
8 ohms 1 kHz 0.1% THD900W
4 ohms 1 kHz 1% THD1400W
XF OUTPUT POWER, BRIDGED MONO MODE
140V or 200V 50 Hz-16 kHz 0.5% THD1000W
Signal to Noise (20 Hz-20 kHz)100 dB
Distortion (SMPTE-IM)Less than 0.01%
Input Sensitivity @ 8 ohms1.07v (+2.8 dBu)
Voltage Gain @ 8 ohms44.7x (33 dB)
Output CircuitryClass AB
Distortion (Typical)
20 Hz-20 kHz: 10 dB below rated power
1.0 kHz and below: full rated power
Less than 0.03% THD, 4 ohms and 8 ohms
Less than 0.03% THD, 4 ohms and 8 ohms
Frequency Response
10 dB below rated output power
Direct outputs: -3 dB @ 50 Hz, -0.5 dB @ 20 kHz; XF outputs: 50 Hz-16 kHz, +1/-3 dB
Damping Factor (direct outputs)Greater than 200 at 8 ohms, ISA 1350 greater than 250
Output Regulation (isolated outputs)Less than 1.5 dB
Input Impedance10 k ohms unbalanced, 20 k ohms balanced
Input Clipping10 Vrms (+22 dBu)
CoolingContinuously variable speed fan, back-to-front air flow
Connectors, each channelInput: Active balanced; 3-pin Euro-style detachable terminal block and XLR (pin 2+)
Output: Covered barrier strips
DataPort V2: HD-15 connector
ControlsFront: AC switch
Rear: Ch. 1 and Ch. 2 gain knobs, 10-position DIP switch
IndicatorsPWR-ON: Green LED; SIGNAL: Green LED (1 per channel);
CLIP: Red LED (1 per channel)
Dimensions19 (48.3 cm) rack mounting, 5.25(13.3cm) tall (3 rack spaces),
15.9 (40 cm) deep (from front mounting rails)
Amplifier ProtectionFull short circuit, open circuit, thermal, ultrasonic, and RF protection;
Stable into reactive or mismatched loads
Power Requirements120, 230, VAC, 50-60 Hz
Load ProtectionOn/off muting; Triac crowbar: ISA 750, 1350 and 800Ti; AC coupling: ISA 280, 300Ti, 450 and 500Ti

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