QSC Audio SC-322X specifications LF-3215Low Frequency Loudspeaker Introduction

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Cinema Loudspeaker Systems User Manual

LF-3215Low Frequency Loudspeaker

Introduction

The LF-3215 dual 15” (381mm) low frequency enclosure is designed specifically for cinema applications. Meeting cinema requirements for extended low frequency response differenti- ates the LF-3215 from more conventional “rock-and-roll” woofer systems. The LF-3215 cov- ers the frequency range from 32 Hertz to 1500 Hertz, depending upon the high frequency system requirements. With its tight spacing between woofers, the LF-3215 offers improved coupling and keeps coverage angles wide over a greater frequency range than more widely spaced designs.

The 300 watt, 15” transducers are well suited for cinema use. They feature 3” (76mm) voice coils, 120 oz.(3.4kg) ceramic magnets, and vented pole pieces to ensure cool operation. Cooler temperatures increase transducer lifespan and decrease the problem of power com- pression at high power levels. The suspension and voice coil of each transducer have been designed to provide low distortion and high impact bass at high power levels.

The enclosure is constructed of high quality medium density fiberboard panels with stiffen- ing braces on all panels and features separate woofer chambers. This prevents over-excur- sion of a transducer caused by improper box loading in the rare event of a transducer failure. The eight stiffening braces reduce panel resonance.

Both internal and external port openings are fully radiused ensuring smooth air flow at high power. This prevents audible port turbulence noise.

With symmetrical port loading, bass ports are evenly spaced on each side of the transduc- ers, making internal pressure more uniform across the back surface of the transducer. This prevents the cone from being displaced to one side or another by unbalanced forces, reduc- ing the chance of driving the voice coil out of the center of the gap at high power levels.

Three T-nuts in the top of the enclosure provide easy mounting of QSC’s HF-63 high fre- quency system, or MH-1063 mid-high frequency system.

Enclosure is not designed to be suspended, flown, or rigged. Do not sus- pend, fly, or rig this enclosure.

This product is capable of producing sound pressure levels that can perma- nently damage human hearing. Always keep sound pressure levels in the listening area below levels that can damage human hearing.

Install in accordance with QSC Audio Product’s instructions and a licensed, professional engineer. Only use attachments, mounts, accesso- ries, or brackets specified by QSC Audio Products, Inc. Refer all servicing to qualified personnel. Servicing is required when the apparatus has been damaged in any way.

WARNING! Before placing, installing, rigging, or suspending any speaker product, inspect all hardware, suspension, cabinets, transducers, brackets and associated equipment for damage. Any missing, corroded, deformed or non-load rated component could significantly reduce the strength of the installation, placement, or array. Any such condition severely reduces the safety of the installation and should be immediately corrected. Use only hardware which is rated for the loading conditions of the installation and any possible short-term unexpected overloading. Never exceed the rating of the hardware or equipment. Consult a licensed, professional engineer when any doubt or questions arise regarding a physical equipment installa- tion.

Mounting points for mid- high or high frequency system

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TD-000173-00 rev.C © Copyright 2004, 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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Contents SC-322X SC-322X Two parallel outputs Two LF-outputs Transducers High Frequency Component Introduction MountingConnections Maximum Input Power ConnectorsWeight Frequency RangeDisclaimer QSC Audio Products 3 Year Limited WarrantyContacting QSC Audio Products MacArthur Blvd., Costa Mesa, CA, 92626 USA LF-3215Low Frequency Loudspeaker IntroductionMounting points for mid- high or high frequency system Normal Connection Normal Connection ExampleParallel Connection Example Individual Transducer Connection ExampleEnclosure Size Weight SPL dB Maximum OutputSPL and Impedance vs. Frequency SPL 2pi SPL 4pi Impedance Frequency HertzContacting QSC Audio Products Page Conexiones Conexión normalConexión en paralelo de un segundo LF Conexión del transductor individual requiere modificaciónIntervalo de frecuencias Impedancia Frecuencia hertziosPotencia máxima de entrada Procesamiento recomendadoGarantía limitada de 3 años de QSC Audio Products Cómo comunicarse con QSC Audio ProductsRenuncia de responsabilidad MacArthur Blvd., Costa Mesa, CA Branchements Branchement normalBranchement en parallèle dun second LF-3215 Exemple de branchement normalTraitement recommandé Enceinte Dimensions Poids brut SPL dBPlage de fréquence Couverture nominaleQSC Audio Products Garantie limitée de 3 ans Pour contacter QSC Audio ProductsAvis de non-responsabilité Hinzuziehen Verbindungen Normaler AnschlussEinzelner Wandler Anschlussbeispiel Paralleler Anschluss des zweiten LF-3215Nominelle Abstrahlung Maximaler AusgangImpedanz EmpfindlichkeitBeschränkte Dreijahresgarantie durch QSC Audio Products Kontaktaufnahme mit QSC Audio ProductsHaftungsausschluss LF-3215 低频扬声器 单个变频器连接 （需要修改） LF-3215 产品规格 如有改变恕不另行通告 频率范围： 保修 （仅限美国；其它国家，请联系您的经销商或分销商）

SC-322X specifications

The QSC Audio SC-322X is a high-performance loudspeaker designed to deliver exceptional sound quality and reliability for a range of applications, including live performances, installations, and corporate events. Renowned for its versatility and consistent audio performance, the SC-322X is an ideal choice for sound professionals seeking powerful and clear sound reproduction.

One of the standout features of the SC-322X is its advanced two-way design, which includes a dual 12-inch cone woofer and a powerful 1.75-inch titanium diaphragm compression driver. This combination delivers impressive low-frequency response down to 45 Hz, ensuring that deep bass notes are rendered with precision and clarity. The system's crossover technology allows for seamless integration between the woofer and tweeter, resulting in a balanced sound across the frequency spectrum.

The SC-322X also incorporates QSC’s proprietary DMT (Directivity Matched Transition) technology. This innovative design allows for consistent coverage throughout the listening area while minimizing distortion and maintaining a well-defined sound stage. Users can expect excellent sound quality regardless of their position in the venue, making the SC-322X a reliable choice for a variety of setups.

Durability and reliability are hallmarks of the SC-322X. The enclosure is constructed from premium-grade plywood, offering robustness suitable for both touring and permanent installations. Its rugged exterior is enhanced with a durable powder-coated finish and a dense foam grille, protecting the internal components while maintaining an elegant appearance.

In terms of connectivity, the SC-322X features a variety of input options, making it highly adaptable to different audio systems. The loudspeaker is equipped with Neutrik Speakon inputs, ensuring secure connections and minimizing signal loss. Additionally, the integrated pole mount socket makes it easy to position the speaker for optimal sound projection, whether on the ground or elevated.

For sound professionals seeking a portable loudspeaker that does not compromise on performance, the QSC Audio SC-322X is a top-tier option. Its combination of cutting-edge technology, sturdy construction, and exceptional sound quality makes it suitable for demanding environments, whether in a concert hall, theater, or corporate venue. The SC-322X represents a significant investment in audio fidelity and reliability, positioned as a powerful tool in any audio engineer's arsenal.
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