QSC Audio GX5 user manual Welcome, GX3, GX7

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GX POWER AMPLIFIER SERIES3

Professional Power Amplifiers

WELCOME

Thank you for purchasing a QSC Audio amplifier. The GX Series is the latest in a long line of hard-working, low cost amplifiers, designed to produce the best possible results for a wide range of users. In most cases, you can plug and play with no surprises, but for best results, we recommend you review the enclosed user guide.

UNPACKING

Confirm that the amplifier has no visible shipping damage. Confirm that amplifier has the correct AC cord and voltage rating for your region (See rear panel, Serial Number plate). It is best to keep the carton in case the amplifier needs to be returned, at least until it has been tested.

SUPPORT AND SERVICE

QSC Audio Products maintains a world-wide network of distributors and service centers. These local agencies will be able to answer your questions and take care of any problems.

QSC WEBSITE

Our website, www.qscaudio.com, is factory-maintained and supported in multiple languages. Visit frequently for new announcements, typical questions, and other user information.

IMPORTANT SAFETY PRECAUTIONS

QSC products are designed for safe operation, and have been certified by recognized product safety agencies to meet all normal standards for this type of product. However, dangerous voltages and power levels exist within the covers of this amplifier. The user is requested to study the precautions in this manual. If the product has been dropped, dented, soaked, or appears to have loose parts inside, the risk of shock is increased. Unplug the AC cord, and take the product to qualified service personnel for inspection and repairs.

POWER RATINGS

Watts at 0.1% clipping, both channels driven

Model

8 ohms

4 ohms

2 ohms*

GX3

300

425

200

GX5

500

700

350

GX7

725

1000

600

*NOTE: 2-ohm loading is not recommended for high power use. To avoid protective limiting, use only at low levels.

EN

FEATURES

Power levels matched to the most popular speakers used by entertainers.

Optimized for maximum real-world headroom into 4Ω and 8Ω speaker systems.

Inputs: XLR, 1/4” TRS and phono input connectors for compatibility with any source.

Outputs: Speakon® combo accepts 1/4” (TS) plugs or Speakon 2-pole and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems.

Minimum depth chassis (only 10.1” / 257 mm) fits in compact, inexpensive effects racks.

Light weight – less than 26 lbs (12.5 kg).

Detented gain controls for precise setting and matching of sensitivity.

GuardRail automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show.

Front panel LEDs monitor Power, Signal and Clipping.

Subwoofer / Satellite crossover built-in.

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Contents TD-000271-00 FCC Interference Statement Important Safety Precautions and Explanation of SymbolsGX7 WelcomeGX3 GX5Cooling Vents Front Panel FeaturesON-OFF Switch Model NumberRack Mounting Green Signal LedsBlue Power LED Gain CONTROLS, CH1, CH2Rear Panel Features AC Inlet Speaker Connections AC Breaker ResetInch Connectors Serial Number and RatingsSystem Hookup Examples System Hookup Examples No POWER, no LIGHTS, no FAN TroubleshootingGX3 GX5 GX7 SpecificationsHow to Contact QSC Audio Products WarrantyManual del usuario Declaración DE LA FCC Respecto a LA Interferencia Desembalaje BienvenidoAberturas DE Ventilación Características DEL Panel FrontalConmutador DE ENCENDIDO-APAGADO Número DE ModeloIndicadores LED Verdes DE Señal Controles DE LA GANANCIA, CH1, CH2Montaje EN Bastidor Indicadores LED Rojos DE RecorteCaracterísticas DEL Panel Posterior Bornes DE Conexión Restablecimiento DEL Disyuntor DE CANúmero DE Serie Y Clasificaciones Entrada DE CA Conexiones DEL AltavozEjemplos DE Conexión DEL Sistema Ejemplos DE Conexión DEL Sistema Resolución DE Problemas GX3 GX5 GX7 EspecificacionesCómo ponerse en contacto con QSC Audio Products GarantíaManuel d’utilisation Suivre toutes les instructions Précautions Importantes ET Explication DES SymbolesBienvenue Amplificateurs DE Puissance Série GXCaractéristiques DU Panneau Avant Numéro DE ModèleÉvents DE Refroidissement Fixation SUR Bâti Commandes DE GAIN, CH1, CH2Voyants Signal Verts Voyant Power BleuCaractéristiques DU Panneau Arrière Bornes DE Raccordement COUPE-CIRCUIT BreakerNuméro DE Série ET Valeurs Nominales Entrée Secteur C.A Branchements DU HAUT-PARLEURExemples DE Branchement DU Système Exemples DE Branchement DU Système PAS D’ALIMENTATION, Voyants ÉTEINTS, Ventilateur À L’ARRÊT DépannageCircuit DE Sortie Caractéristiques Techniques’une juridiction à l’autre GarantieLeistungsverstärker DER Serie GX FCC-HINWEIS ZU Empfangsstörungen Wichtige Sicherheitsvorkehrungen UND SymbolerklärungWillkommen Leistungsverstärker DER Serie GXBelüftungsschlitze Funktionsmerkmale DER FrontplatteEIN-AUS-SCHALTER ModellnummerRote CLIP-LED-ANZEIGEN Grüne SIGNAL-LED-ANZEIGENVERSTÄRKUNGSREGLER, CH1, CH2 RACK-EINBAUFunktionsmerkmale DER Hinteren Platte Lautsprecheranschlüsse NETZSTROM-TRENNSCHALTERRÜCKSETZUNGSeriennummer UND Nenndaten NetzstromeingangsbuchseSystemanschlussbeispiele Systemanschlussbeispiele Kein STROM, Keine LEUCHTEN, Kein Gebläse FehlersucheAusgangsstromkreis Technische DatenKontaktinformationen für QSC Audio Products GX 功率放大器系列 重要安全注意事项和符号说明 专业功率放大器 前面板功能 增益控制,通道1、通道2 后面板功能 交流断路器重设 系统连接实例 系统连接实例 故障排除 GX3 GX5 GX7 联系 QSC Audio Products

GX3, GX5, GX7 specifications

QSC Audio has established itself as a leader in professional audio solutions, and its GX series of power amplifiers—GX7, GX5, and GX3—reflect the brand's commitment to quality and performance. These amplifiers are designed to deliver reliable, high-quality sound reinforcement, meeting the demands of musicians, DJs, and audio engineers alike.

The QSC GX7 is a robust amplifier capable of delivering 1,000 watts per channel at 4 ohms, making it an excellent choice for larger venues or events where powerful sound output is essential. It features QSC's PowerLight technology, which provides high efficiency and a lightweight design, ensuring portability without sacrificing power. The GX7 also includes an advanced clip limiter that protects the system from distortion, while maintaining audio clarity. Its rear panel features XLR and TRS inputs, allowing for versatile connectivity options.

Next in the lineup is the GX5, a mid-range amplifier that offers 700 watts per channel at 4 ohms. It strikes a perfect balance between performance and size, making it suitable for both small to medium-sized events or as part of a larger sound system. Like the GX7, it adopts the PowerLight technology for energy efficiency, and its durable construction ensures reliability in diverse environments. The GX5 also comes equipped with a low-frequency protection circuit that safeguards speakers from over-excursion, preserving sound quality throughout usage.

The smallest of the series, the GX3, delivers 500 watts per channel at 4 ohms. Ideal for smaller venues, mobile applications, or as monitors in a studio setting, the GX3 shares many of the same technologies as its larger counterparts, including the PowerLight design and a comprehensive protection system. Its front-to-back ventilation helps maintain thermal stability, enhancing performance during longer sessions.

All three models incorporate a design philosophy emphasizing user convenience and flexibility. The amplifiers feature an intuitive rear panel layout that simplifies setup and operation, while their lightweight design makes them easy to transport. QSC’s innovative technology ensures consistent performance and durability, making the GX series a trusted choice for professionals.

In summary, the QSC Audio GX7, GX5, and GX3 amplifiers deliver impressive power, solid build quality, and advanced features tailored for a variety of audio applications. Whether powering large PA systems or small setups, these amplifiers embody QSC's dedication to audio excellence and reliability.