QSC Audio ISA300Ti, ISA1350, ISA280, ISA450, ISA750 User Manual

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QSC Audio ISA300Ti, ISA1350, ISA280, ISA450, ISA750 User Manual

ISA Series

Professional Power Amplifiers

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. The ISA 1350 drives 70 volt lines directly with 1500 watts per channel. Versatile loading options and a comprehensive set of features make the ISA Series a rugged, cost-effective power solution for any permanently installed sound system.

ISA Power Amplifiers

 

 

Watts per channel

 

Model

70V*

8Ω**

4Ω**

2

ISA280

185

280

430

 

 

 

 

 

ISA450

260

425

700

 

 

 

 

 

ISA750

450

650

1200

 

 

 

 

 

ISA1350

1500††

800

1300

2000

ISA300Ti

300

185

280

430

 

 

 

 

 

ISA500Ti

500

260

425

700

 

 

 

 

 

ISA800Ti

800

450

650

1200

*50 Hz – 16 kHz, 0.5% THD

**20 Hz – 20 kHz, 0.1% THD †1 kHz, 1% THD

†† Direct Output, 70V, less than 0.5% THD, 20 - 20 kHz

THX is a trademark of THX Ltd.

ISA280 | ISA450 | ISA750 | ISA1350 | ISA300Ti | ISA500Ti | ISA800Ti

Features

Four models for low impedance applications

ISA1350 drives 70 volt lines directly with 1500 watts per channel

Three “Ti” versions include low impedance and isolated 25, 70, and 100 volt outputs for distributed audio systems

ISA450 and ISA750: THX™ approved for professional cinema 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)

Class H complementary bipolar output circuitry reduces AC power draw and waste heat by 40% on ISA750 and ISA800Ti, and by 50% on ISA1350

Front panel indicators include power, signal, and clip (and protect on ISA1350)

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

“Ti” Models

Isolated 25, 70, 100 volt, and low impedance outputs available simultaneously

Simple barrier strip connection determines output mode

“Ti” models have fully isolated 25, 70, and 100 volt outputs

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