1. Introducció
This manual provides essential information for the safe and efficient operation of your QSC RMX1450a Stereo Power Amplifier. The RMX1450a is designed to deliver clean, dynamic power for professional audio applications, offering reliable performance. Please read this manual thoroughly before installation and use.
1.1 Què hi ha a la caixa
- QSC RMX1450a Stereo Power Ampmés viu
- Cable d'alimentació CA
- Manual d'usuari (aquest document)
Figura 1.1: Davant view of the QSC RMX1450a Stereo Power Amplifier. This image shows the amplifier's front panel with the power switch, gain controls for Channel 1 and Channel 2, and LED indicators for signal and clip status.
2. Informació de seguretat
Observeu sempre les següents precaucions de seguretat per evitar descàrregues elèctriques, incendis o danys a la unitat.
- Font d'alimentació: Connecteu el amplifier only to the type of power source indicated on the unit.
- Posada a terra: Assegureu-vos el amplifier is properly grounded to prevent electrical shock.
- Ventilació: No bloquegeu les obertures de ventilació. Assegureu-vos que hi hagi un flux d'aire adequat al voltant de la unitat per evitar el sobreescalfament.
- Humitat: No exposar el amplifier to rain or moisture. Do not place objects filled with liquids on the unit.
- Manteniment: Demaneu totes les tasques de manteniment a personal de servei qualificat. No intenteu fer el manteniment d'aquest producte vosaltres mateixos.
- Col·locació: Col·loca el amplifier on a stable surface or mount it securely in a rack.
3. Configuració
3.1 Muntatge en bastidor
The QSC RMX1450a requires 2 standard rack spaces for installation. Secure the amplifier firmly using appropriate rack screws. Ensure there is sufficient space for airflow around the unit, especially at the front and rear ventilation grilles.
3.2 Connexions
Abans de fer cap connexió, assegureu-vos que ampl'amplificador està apagat i desconnectat de la xarxa elèctrica.
Figura 3.1: posterior view of the QSC RMX1450a Stereo Power Amplifier. This image highlights the various input and output connectors, including XLR, 1/4" TRS, barrier strip inputs, and Speakon/binding post outputs, along with mode switches.
3.2.1 Connexions d'entrada
The RMX1450a offers flexible input options for each channel:
- 1/4" TRS: For balanced or unbalanced line-level signals.
- XLR: For balanced line-level signals, commonly used in professional audio setups.
- Barrier Strip: Provides an alternative connection method for balanced or unbalanced signals, often used for permanent installations.
Connecteu la font d'àudio (mesclador, preamplificador)amplifier, etc.) to the desired input connectors for Channel 1 and Channel 2.
3.2.2 Connexions de sortida
Connecteu els vostres altaveus al amplifier's output terminals:
- Post d'enquadernació: Standard screw-type terminals for bare wire or banana plug connections.
- Neutrik Speakon: Secure, high-current connectors ideal for professional loudspeaker connections.
Ensure correct polarity (+ to + and - to -) when connecting speakers. Refer to your speaker's manual for impedance compatibility.
3.2.3 Connexió d'alimentació
Connecteu el cable d'alimentació de CA subministrat a amplifier's IEC inlet and then to a grounded electrical outlet.
4. Instruccions de funcionament
4.1 Controls i indicadors del tauler frontal
Figura 4.1: Frontal inclinat view of the QSC RMX1450a Stereo Power Amplifier, showing the power switch, channel gain controls, and LED indicators.
- Interruptor d'alimentació: Activa o desactiva ampactivador i apagat.
- Gain Controls (Channel 1 & 2): Front-mounted rotary controls for adjusting the input sensitivity (volume) of each channel.
- LED de senyal: Illuminate when an audio signal is present at the input.
- LED de clip: Illuminate when the output signal is approaching clipping (distortion). Reduce gain if these LEDs light frequently.
4.2 Rear Panel Switches
The rear panel features several switches to configure the amplifier's operation:
- Clip Limiters: Independent and defeatable clip limiters prevent severe clipping and protect speakers. It is generally recommended to keep these engaged.
- Filtres: High-pass filters (e.g., 30 Hz or 50 Hz) can be engaged to remove unwanted low-frequency content, protecting speakers and improving clarity.
- Interruptors de mode:
- Estèreo: Default mode, each channel operates independently.
- Paral·lel: Both channels receive the same input signal, but drive separate speakers. Useful for bi-amping or driving multiple speakers with a mono source.
- Pont Mono: Combines both channels into a single, higher-power mono output. Use only with speakers rated for bridged operation and connect to the designated bridged output terminals.
4.3 Seqüència d'operacions bàsiques
- Ensure all connections (inputs, outputs, power) are secure and correct.
- Estableix el amplifier's gain controls to their minimum (fully counter-clockwise) position.
- Power on your audio source (mixer, etc.) first.
- Power on the QSC RMX1450a ampmés viu.
- Slowly increase the gain controls on the amplifier to achieve the desired volume level. Monitor the Signal and Clip LEDs.
- When powering down, turn the amplifier off first, then your audio source.
5. Manteniment
The QSC RMX1450a amplifier is designed for robust performance with minimal maintenance.
- Neteja: Periodically wipe the exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Ventilació: Ensure ventilation grilles remain clear of dust and debris to maintain proper cooling.
- Inspecció: Regularly check power cords and audio cables for any signs of damage.
6. Solució De Problemes
If you encounter issues with your RMX1450a amplificador, consulteu els passos següents per a la resolució de problemes habituals:
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Power cord disconnected, faulty outlet, tripped circuit breaker | Check power cord connection, try a different outlet, reset circuit breaker. |
| Sense sortida de so | Input cables disconnected, speaker cables disconnected, gain controls at minimum, incorrect mode setting, source device off | Verify all cable connections, increase gain, check rear panel mode switches, ensure audio source is active. |
| So distorsionat | Input signal too high, amplifier clipping, faulty speaker, incorrect impedance match | Reduce input level from source, lower amplifier gain, check Clip LEDs, inspect speakers, verify speaker impedance. |
| Sobreescalfament | Blocked ventilation, excessive load, prolonged high output | Ensure clear airflow around the unit, reduce output level, check speaker impedance. Allow unit to cool down. |
If the problem persists after attempting these solutions, contact QSC customer support or a qualified service technician.
7. Especificacions
| Característica | Detall |
|---|---|
| Model | RMX1450a |
| Fabricant | QSC |
| Nombre de canals | 2 |
| Potència de sortida | 300 watts (per canal, típic) |
| Dimensions de l'article (L x A x A) | 16 x 19 x 3.5 polzades |
| Rack Spaces Required | 2U |
| Pes de l'article | 40 lliures |
| Material | Metall |
| Connectors d'entrada | 1/4" TRS, XLR, Barrier Strip |
| Connectors de sortida | Binding Post, Neutrik Speakon |
| Característiques | Independent and defeatable clip limiters, Front-mounted gain controls |
| UPC | 00684284062796, 103000001241, 617237997579, 684284003706, 658700921738 |
| Data de primera disponibilitat | 13 d'abril de 2004 |
8. Garantia i Suport
For information regarding warranty coverage, technical support, or service, please refer to the official QSC website or contact QSC customer service directly.
Podeu trobar més informació i recursos de suport visitant la QSC Store on Amazon.
