1. Introducció
This manual provides essential information for the safe and efficient operation of your QSC GX3 300-Watt Power Amplifier. Please read this manual thoroughly before installation and use to ensure proper functionality and to prevent damage to the unit or connected equipment. The QSC GX3 is designed for professional audio applications, offering reliable power delivery and performance.
2. Informació de seguretat
Observeu sempre les precaucions de seguretat següents:
- Font d'alimentació: Connecteu el amplificador només al volum especificattage power source as indicated on the unit.
- Ventilació: Assegureu-vos una ventilació adequada al voltant ampNo bloquegeu les obertures de ventilació.
- Humitat: Do not expose the unit to rain or moisture. Avoid placing liquid-filled objects on the ampmés viu.
- Manteniment: Demaneu totes les tasques de manteniment a personal de servei qualificat. No intenteu fer el manteniment d'aquesta unitat vosaltres mateixos.
- Posada a terra: Connecteu sempre el cable d'alimentació a una presa de terra.
- Sobrecàrrega: Eviteu sobrecarregar el amplifier. Ensure speaker impedance matches the ampespecificacions del lifier.
3. Contingut del paquet
Comproveu que el vostre paquet contingui els elements següents:
- QSC GX3 300-Watt Power Ampmés viu
- Cable d'alimentació CA
- Manual d'usuari (aquest document)
4. Configuració
4.1 Col·locació física
The QSC GX3 amplifier is designed for rack mounting. Ensure sufficient space for airflow, especially around the front and rear ventilation grilles. Avoid placing the unit near heat sources or in direct sunlight.
Figura 4.1: Angle view of the QSC GX3 Power Amplifier, showing its rack-mountable design and ventilation grilles.
4.2 Connexions
Abans de fer cap connexió, assegureu-vos que amplifier is powered off and disconnected from the AC mains.
Figure 4.2: Rear panel of the QSC GX3 Power Amplifier, illustrating input and output connections.
- Entrades d'àudio: Connecteu la font d'àudio (mesclador, preamplificador)amplifier) to the input connectors on the rear panel. The GX3 features XLR and RCA input options for each channel.
- Sortides dels altaveus: Connect your loudspeakers to the output connectors. The amplifier provides both NL4 (Speakon-compatible) and binding post outputs. Ensure correct polarity (+ to + and - to -).
- Interruptor de creuament: The rear panel includes a crossover switch. Set it to "FULL RANGE" for standard operation or "LP CROSSOVER HF" for low-pass filtering on channel 1 and high-pass filtering on channel 2, typically used for bi-ampsistemes lificats.
- Alimentació CA: Once all audio connections are secure, connect the supplied AC power cord to the AC INLET on the rear panel and then to a grounded electrical outlet.
5. Funcionament
5.1 Controls i indicadors del tauler frontal
Figure 5.1: Front panel of the QSC GX3 Power Amplifier, showing the power switch, gain controls, and status indicators.
- POWER ON Switch: Activa o desactiva ampel poder de l'activador.
- Gain Controls (1 & 2): Rotary knobs to adjust the output level for each channel. Start with these set to minimum (fully counter-clockwise) before powering on.
- CLIP Indicators: Red LEDs that illuminate when the output signal is clipping. Reduce the input level or gain if these light up frequently.
- SIG Indicators: Green LEDs that light up when an audio signal is present on the respective channel.
- Indicador PWR: LED verd que indica el ampel lifier està encès.
5.2 Powering On and Initial Sound Check
- Assegureu-vos que totes les connexions siguin correctes i segures.
- Estableix el amplifier's gain controls to their minimum position.
- Power on your audio source equipment first, then the QSC GX3 amplifier using the front panel POWER ON switch.
- Slowly increase the gain controls on the amplifier to achieve the desired listening level. Observe the SIG indicators for signal presence and the CLIP indicators to avoid distortion.
- When powering down, turn off the amplifier first, then your audio source equipment.
6. Manteniment
Un manteniment regular garanteix un rendiment òptim i una llarga durada del vostre ampmés viu.
- Neteja: Utilitzeu un drap suau i sec per netejar l'exterior ampNo utilitzeu netejadors líquids ni dissolvents.
- Ventilació: Periodically check that the ventilation grilles are free from dust and debris. Blocked vents can lead to overheating.
- Connexions: Occasionally check all input and output connections for tightness and corrosion.
7. Solució De Problemes
If you encounter issues with your QSC GX3 amplifier, consulteu els següents problemes i solucions habituals:
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Power cord disconnected; circuit breaker tripped; power switch off. | Check power cord connection; reset circuit breaker on rear panel; ensure power switch is ON. |
| Sense sortida de so | Input cables disconnected; speaker cables disconnected or incorrect polarity; gain controls set too low; audio source issue. | Verify all audio input and speaker connections; increase gain controls; check audio source functionality. |
| Distorted Sound / CLIP LED On | Senyal d'entrada massa alt; amplifier overloaded; speaker impedance mismatch. | Reduce input level from source; lower amplifier gain; ensure speaker impedance is within amplifier's rated range. |
| Sobreescalfament | Blocked ventilation; inadequate airflow; prolonged high-power operation. | Ensure clear ventilation paths; provide adequate space around the unit; reduce operating level if necessary. |
If the problem persists after attempting these solutions, contact QSC customer support or a qualified service technician.
8. Especificacions
Key technical specifications for the QSC GX3 Power Ampmés viu:
- Potència de sortida: 300 watts (per canal, típic)
- Nombre de canals: 2
- Voltage: 230 volts (nominals)
- Subministrament mínim Voltage: 120 Volts
- Volum de subministrament màximtage: 230 Volts
- Corrent de subministrament: 4.65 Amps
- Pes de l'article: 26.6 lliures
- Dimensions del producte (L x A x A): 24 x 6 x 14 polzades
- Tipus de muntatge: Surface Mount (designed for rack mounting)
- E/S: Designed for Contemporary Applications (XLR, RCA inputs; NL4, Binding Post outputs)
- Crossover: Built-in switchable crossover (Full Range / LP Crossover HF)
Nota: Les especificacions estan subjectes a canvis sense previ avís.
9. Garantia i Suport
QSC products are designed for reliability and performance. For detailed warranty information, please refer to the warranty card included with your product or visit the official QSC website. For technical support, service, or further inquiries, please contact QSC customer service directly.
An official User Manual (PDF) is also available for download from the QSC weblloc web o a través d'aquest enllaç directe: QSC GX3 User Manual PDF.
