Selecting Stereo, Parallel, or Bridge Mode

The amplifier can be set for normal Stereo mode, Parallel Input mode, or Bridge Mono mode.

Stereo Mode- Each channel remains inde- pendent, and may be used for two different signals.

Parallel Mode - This setting connects both inputs together. One signal feeds both channels. Each channel's Gain control and speaker connection remain independent.

Bridge Mode- This setting combines both channels of a pair into a single channel with twice the output voltage. Use only the first channel's input and Gain control. Set the second channel's Gain control at mini- mum. The load must be rated for the higher power (or voltage) and is connected as shown on pages 6 and 7.

Do not connect more than one input when operating in parallel or bridge mode.

Setting Low Frequency Filters

ISA 280, ISA 450, ISA 750 and ISA 1350: Use of the Low Frequency Filters is recom- mended. Use the appropriate switch set- tings to turn the filter ON or OFF and to select the filter frequency. When set to the ON position, the channel has a 12dB per octave Low Frequency filter to limit subau- dio cone movement, making more power available for the loudspeaker’s rated fre- quency range. The filter should only be turned OFF for driving subwoofers.

ISA 300Ti, ISA 500Ti, and ISA 800Ti: The Low Frequency Filters are always active and not defeatable. Each channel has a 12dB per octave Low Frequency filter to prevent saturation of the 70V loudspeaker transformers. This reduces distortion and prevents amplifier overload. The 50 Hz set- ting usually works well with high quality loudspeaker transformers. The 75 Hz set- ting works well with speech-grade loud- speakers and transformers.

ISA 280/450/750/1350

ISA 300Ti/ 500Ti/800Ti

Stereo Mode -

Ti Stereo Mode -

Switches 4, 5, 6 and 7

Switches 3, 4, 5, 6, 7,

are all set to the LEFT

and 8 are all set to the

position.

LEFT position.

Parallel Mode -

Ti Parallel Mode -

Switches 4 and 5 are

Switches 3, 4, and 5

set to the RIGHT posi-

are set to the RIGHT

tion.

position.

Switches 6 and 7 are

Switches 6, 7, and 8

set to the LEFT posi-

are set to the LEFT

tion.

position.

Bridge Mode-

Ti Bridge Mode-

Switches 4, 5, 6, 7, and

Switches 3, 4, 5, 6, 7,

8 are all set to the

and 8 are all set to the

RIGHT position.

RIGHT position.

Switch 10 is set to the

Switch 10 is set to the

LEFT position.

LEFT position.

Low Frequency Filter-

Ti Low Frequency Filter-

Switches 2 and 3 con-

Switch 2 controls CH1.

trol CH1. Switches 8

Switch 9 controls CH2.

and 9 control CH2.

Switches 2 and 9 select

Switches 3 and 8 turn

50Hz or 75 Hz.

the LF filter ON or OFF.

 

Switches 2 and 9

 

select 30Hz or 70 Hz.

 

EN

5

Page 5
Image 5
QSC Audio SA 1350 Stereo Mode Ti Stereo Mode Switches 4, 5, 6, Are all set to the Left, Right position Switch 10 is set to

SA 1350 specifications

The QSC Audio SA 1350 is a powerful and versatile amplifier that stands out in the world of professional audio. Designed for a variety of applications, including live sound, installation, and event production, the SA 1350 delivers high performance and reliability, making it a favorite among audio engineers and technicians.

One of the standout features of the SA 1350 is its robust power output. With a continuous power rating of 1,350 watts at 4 ohms, this amplifier is capable of driving large speakers with ease, providing clean and distortion-free sound even at high volumes. The amplifier is designed to handle a wide range of speaker impedances and configurations, allowing users to tailor their audio setup to their specific needs.

The SA 1350 utilizes QSC’s advanced PowerLight 3 technology, which provides a lightweight yet powerful solution for amplifying sound. This technology integrates high-efficiency Class D amplification with a switch-mode power supply, resulting in reduced weight and increased energy efficiency. The amplifier's compact form factor makes it easy to transport and install, without sacrificing performance.

Heat management is another important aspect of the SA 1350’s design. The amplifier features a patented, high-efficiency cooling system that includes advanced thermal protection circuits. This ensures the amplifier remains cool during operation, reducing the risk of overheating and extending the lifespan of the unit.

Connectivity options are versatile, with XLR and 1/4-inch inputs allowing for seamless integration with various audio sources. Additionally, the SA 1350 is equipped with output binding posts and Neutrik Speakon connectors, accommodating different types of speaker cables and setups.

The QSC Audio SA 1350 also emphasizes user-friendly operation. With its intuitive front panel control layout, users can easily adjust gain settings and monitor performance through LED indicators. Its rugged construction is built to withstand the rigors of touring and installations, ensuring reliability in any environment.

In summary, the QSC Audio SA 1350 is a powerful, efficient, and reliable amplifier that combines advanced technology and practical features. Whether used for live sound applications, installations, or events, the SA 1350 consistently delivers exceptional audio performance that meets the demands of professionals in the audio industry. Its blend of power, efficiency, and versatility makes it an indispensable tool for any audio setup.