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Cinema Loudspeaker Systems User Manual

SR-18Surround Loudspeaker

Introduction

The SR-18 Cinema Surround Loudspeaker offers high power handling, excellent sensitivity, and extended bass response in a very compact enclosure. The high power handling and rugged plywood enclosure are optimized for the task of digital soundtrack reproduction.

Instead of being tuned as an individual unit, the SR-18 features Array Optimized Tuning (AOT). The crossover is voiced for flat low frequency response when used in an array on a theatre wall. Conven- tional loudspeakers are voiced as a single unit.

The SR-18 features a high power long-throw 8” (203mm) low frequency transducer for smooth, extended bass response. The high frequency section combines a 1” (25mm) titanium diaphragm com- pression driver with a constant directivity horn for very high output capability and wide, even high frequency coverage. The 100 watt continuous power rating provides absolute reliability.

The compact black enclosure with black grille blends into any theatre decor. The baffle’s built-in 15° tilt places the loudspeaker at the optimum coverage angle for most applications. The Quick Mount bracket design allows for fast installation. The loudspeaker-half of the bracket comes pre-installed on each SR-18. The Quick Mount wall bracket is purchased separately to allow shipment to the job site ahead of the loudspeakers. A U-bracket is also available in lieu of the Quick Mount bracket sys- tem.

SR-18 Specifications (subject to change without notice)

Frequency Response:

40 - 20,000 Hertz (-6 dB, half space)

 

36 - 20,000 Hertz useable range (-10 dB, half space)

Nominal Coverage:

95° horizontal X 85° vertical (average from 1000 to 10,000 Hertz)

DI:

7.5

Q:

5.6

Maximum Output:

112 dB

Impedance:

8 ohms

Maximum Input Power (AES):

100 watts

Sensitivity (2.83V, 1m):

92.0 dB

Crossover Frequency:

2,800 Hertz

Recommended Processing:

QSC amplifier with subsonic filter at 50 Hertz

Connectors:

Four terminal barrier strip. Outputs in parallel with inputs.

Transducers:

8” (203mm) woofer, 1” (25mm) Ti compression driver on CD horn.

Enclosure:

Painted plywood, 15° baffle

Size:

20.54” H x 12.00” W x 11.75” D (521.6mm x 304.8mm x 298.5mm)

Weight:

24 lbs. as hung (11 kg.)

Optional Brackets:

Quick Mount: QM-SW (0° tilt) or QM-BW (8° tilt)

U-bracket: YM-300

*TD-000203-00*

TD-000203-00 rev.B

© Copyright 2005, QSC Audio Products, Inc.

QSC® is a registered trademark of QSC Audio Products, Inc.

“QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office

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QSC Audio specifications SR-18Surround Loudspeaker Introduction, SR-18 Specifications subject to change without notice
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SR-18 specifications

The QSC Audio SR-18 is a professional-grade loudspeaker designed to deliver exceptional sound performance in a variety of settings, from live concerts to studio monitoring. This versatile speaker is engineered to produce high-quality audio with clarity and precision, making it a popular choice for audio professionals and enthusiasts alike.

At the heart of the SR-18 is its advanced driver technology. The speaker features an 18-inch high-excursion bass driver, which provides deep, powerful low frequencies. This is complemented by a built-in 1.4-inch titanium diaphragm compression driver for superior high-frequency response. Together, these drivers create a full-range sound that is rich and dynamic, capable of handling diverse music genres and sound systems.

One of the main features of the QSC SR-18 is its robust construction. The enclosure is built from premium plywood and finished with a durable black texture that not only enhances the aesthetic appeal but also ensures the speaker can withstand the rigors of road use. The cabinet design includes an acoustic port that minimizes distortion and enhances bass response, allowing for a more cohesive audio experience.

The SR-18 also incorporates advanced technologies for optimal performance. It boasts QSC’s unique waveguide technology, which provides even sound dispersion and minimizes beaming. This results in a broader listening area, allowing audiences to enjoy consistent sound quality regardless of their position relative to the speaker.

For versatility, the QSC SR-18 is equipped with multiple input options, including XLR and ¼-inch connectors, making it compatible with a wide range of audio equipment. Additionally, the speaker is designed with user-friendly features such as a top-mounted handle for easy transport and built-in rigging points for secure installation.

In terms of specifications, the QSC SR-18 delivers impressive performance ratings, including a high sensitivity level that ensures efficient power usage and extended linearity in sound reproduction. This makes it suitable for both passive and active applications, providing users with flexibility in setup configurations.

Overall, the QSC Audio SR-18 stands out for its combination of powerful sound output, durable design, and innovative technologies. Whether used for concert settings, corporate events, or permanent installations, the SR-18’s capabilities make it a reliable choice for delivering exceptional audio experiences. Its versatility, performance, and robust build ensure it remains a favorite among sound professionals seeking quality and reliability in their audio solutions.
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