QSC Audio ISA500Ti, ISA450, ISA300Ti, ISA800Ti, ISA750 ISA Series, Specifications, Qscaudio.com

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ISA Series

Specifications

 

ISA280

ISA450

ISA750

ISA1350

ISA300Ti

ISA500Ti

ISA800Ti

Stereo Mode (both channels driven)

 

 

Continuous average output power per channel

 

 

8Ω / 20 Hz - 20 kHz / 0.1% THD

185 W

260 W

450 W

800 W

185 W

260 W

450 W

4Ω / 20 Hz - 20 kHz / 0.1% THD

280 W

425 W

650 W

1300 W

280 W

425 W

650 W

2Ω / 1 kHz / 1% THD

430 W

700 W

1200 W

2000 W

430 W

700 W

1200 W

Direct Ouput, Stereo Mode

 

 

 

 

 

 

 

70V / 20 Hz - 20 kHz / +0,-0.3 dB / 0.5% THD

1500 W

 

 

 

 

 

 

 

 

XF Output Power, Stereo Mode

 

 

 

 

 

 

 

70V or 100V / 50 Hz - 16 kHz / 0.5% THD

300 W

500 W

800 W

25V / 50 Hz - 16 kHz / 0.5% THD

200 W

300 W

500 W

Bridge Mono Mode

 

 

Continuous average output power

 

 

8Ω / 1 kHz / 0.1% THD

600 W

900 W

1500 W

2800 W

600 W

900 W

1500 W

4Ω / 1 kHz / 1% THD

830 W

1400 W

2400 W

4000 W

830 W

1400 W

2400 W

XF Output Power, Bridge Mono Mode

 

 

 

 

 

 

 

140V or 200V / 50Hz - 16 kHz / 0.5% THD

600 W

1000 W

1600 W

Signal to Noise (20 Hz - 20 kHz)

100 dB

100 dB

100 dB

100 dB

100 dB

100 dB

100 dB

Distortion (SMPTE-IM)

< 0.01%

< 0.01%

< 0.02%

< 0.01%

< 0.01%

< 0.01%

< 0.02%

Input Sensitivity at 8Ω

1.15V (+3.4 dBU)

1.07V (+2.8 dBU)

1.07V (+2.8 dBU)

1.24V (+4.1 dBU)

1.15V (+3.4 dBU)

1.07V (+2.8 dBU)

1.07V (+2.8 dBU)

Gain at 8Ω

33.4x (30.5 dB)

44.7x (33 dB)

56.2x (35 dB)

64.0x (36.1 dB)

33.4x (30.5 dB)

44.7x (33 dB)

56.2x (35 dB)

Output Circuitry

AB

AB

Class H, 2-tier

Class H, 3-tier

AB

AB

Class H, 2-tier

Distortion (typical)

 

 

 

 

 

 

 

20 Hz - 20 kHz: 10 dB below rated power

< 0.03% THD / 4Ω and 8Ω

 

 

 

 

 

1.0 kHz and below: full rated power

< 0.03% THD / 4Ω and 8Ω

 

 

 

 

 

Frequency Response (10 dB below rated ouput power)

ISA280, ISA450, ISA750 and ISA1350: 20 Hz-20 kHz, +0/-1 dB -3 dB points, 5 Hz and 50 kHz

 

 

ISA300Ti, ISA500Ti, ISA800Ti Direct outputs: -3 dB at 50 Hz, -0.5 dB at 20 kHz XF outputs: 50 Hz - 16 kHz, +0/-3 dB

Damping Factor (direct outputs)

> 200 at 8Ω / ISA1350: > 250

 

 

 

 

 

Output Regulation (isolated outputs)

< 1.5 dB

 

 

 

 

 

 

Input Impedance

10k ohms unbalanced, 20k ohms balanced

 

 

 

 

Input Clipping

10 Vrms (+22 dBu) / ISA1350: 4.53 Vrms (+15.3 dBu)

 

 

 

 

Cooling

Continuously variable speed fan, back-to-front air flow

 

 

 

 

Connectors

Input: Active balanced, 3-pin euro style detachable terminal block and XLR (pin 2+)

 

 

 

Output: Covered barrier strips, DataPort V2 / HD-15 connector

 

 

 

Controls

Front: AC switch

 

 

 

 

 

 

 

Rear: Ch. 1 & 2 gain knobs / 10-position DIP switch

 

 

 

 

Indicators

Power-On: Green LED Signal: Green LED (1 per channel) Protect: Red LED (ISA 1350)

Clip: Red LED (1 per channel)

Amplifier Protection

Full short circuit, open circuit, thermal, ultrasonic, and RF protection. Stable into reactive or mismatched loads

 

Load Protection

On/off muting

 

 

 

 

 

 

 

Triac crowbar: ISA750, ISA1350 and ISA800Ti

 

 

 

 

 

AC coupling: ISA280, 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

 

 

 

 

 

 

 

Net

36 lbs (16.3 kg)

42 lbs (19 kg)

47 lbs (21.3 kg)

68 lbs (30.8 kg)

44 lbs (20.0 kg)

49 lbs (22.3 kg)

57 lbs (26 kg)

Shipping

42 lbs (19.1 kg)

48 lbs (22 kg)

53 lbs (24.0 kg)

77 lbs (34.4 kg)

50 lbs (22.7 kg)

55 lbs (25 kg)

63 lbs (28.6 kg)

Power Requirements

100, 120, 230 VAC,

50 - 60 Hz

 

 

 

 

 

Specifications subject to change without notice.

1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174

qscaudio.com

ISA Series Spec Sheet - 02/22/06

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Contents Ti Models Professional Power AmplifiersISA Series Qscaudio.com SpecificationsISA Series

ISA1350, ISA280, ISA750, ISA800Ti, ISA500Ti specifications

QSC Audio, a reputable name in the professional audio industry, offers a diverse range of power amplifiers tailored for various applications. Among their most prominent products are the ISA450, ISA500Ti, ISA750, ISA280, and ISA1350 amplifiers. Each model features cutting-edge technologies and characteristics designed to deliver exceptional sound quality and reliability.

The ISA450 is a compact, lightweight power amplifier that stands out for its efficiency and flexibility. With a power output of 450 watts per channel at 4 ohms, it provides ample power for a variety of applications, including commercial spaces and live events. The ISA450 features an advanced cooling system, ensuring optimal performance even under heavy loads. Additionally, its versatility means it can be used in both 70V and 4 ohm configurations, making it suitable for a wide range of speaker systems.

Next in line is the ISA500Ti, known for its powerful performance and innovative technologies. It boasts a power output of 500 watts per channel, making it ideal for installations requiring robust audio playback. The ISA500Ti is equipped with DSP capabilities, enabling users to customize audio settings such as EQ, crossover, and delay adjustments. Furthermore, its efficient Class D amplification helps reduce power consumption while maintaining high audio fidelity.

The ISA750 amplifier offers even more robust capabilities, delivering 750 watts per channel at 4 ohms. Designed for larger venues, the ISA750 employs QSC’s renowned PowerWave technology to ensure consistent performance and thermal efficiency. This amplifier also features advanced protection circuitry, safeguarding against overload and short circuits, which helps enhance the system's longevity.

The ISA280 is engineered for compact installations where space is at a premium. Despite its smaller footprint, it provides a solid output of 280 watts per channel at 4 ohms. This model is perfect for background music or speech reinforcement in restaurants, stores, and corporate environments. The ISA280 includes features such as signal sensing power on/off, which streamlines installation and operation by eliminating the need for manual switching.

Lastly, the ISA1350 amplifier excels in spreading power across larger areas with up to 1350 watts per channel. It is particularly suitable for large auditoriums, stadiums, or outdoor events where high sound pressure levels are necessary. Like its counterparts, the ISA1350 employs advanced circuitry to optimize performance and reliability.

Overall, QSC's ISA series amplifiers, including the ISA450, ISA500Ti, ISA750, ISA280, and ISA1350, embody a perfect blend of power, efficiency, and versatility, catering to the demanding needs of professionals in the audio industry. Each model stands out for its unique features, making them suitable for a diverse range of applications. From small retail settings to expansive concert venues, QSC's ISA series continues to set the standard in professional audio solutions.