1. Introducció
This manual provides essential information for the safe and efficient operation of your RCF HDL-20A Active Line Array Module. Please read this manual thoroughly before installation and use, and retain it for future reference. The RCF HDL-20A is a high-performance active line array module designed for professional sound reinforcement applications, featuring a 1200W peak (600W RMS) 2-way digital amplifier and advanced DSP processing.
2. Informació de seguretat
Always observe the following safety precautions to prevent electric shock, injury, or damage to the equipment:
- Font d'alimentació: Connecteu la unitat només al volum especificattage and frequency. Ensure the power cord is undamaged and properly grounded.
- 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 exposeu la unitat a la pluja ni a la humitat. Eviteu col·locar líquids a sobre o a prop de la unitat.
- Manteniment: Demaneu totes les tasques de manteniment a personal qualificat. No intenteu obrir ni reparar la unitat vosaltres mateixos.
- Muntatge: When suspending the unit, ensure all rigging hardware is securely fastened and rated for the weight of the module. Follow all local regulations for overhead rigging.
- Protecció auditiva: This product can produce high sound pressure levels. Use hearing protection when operating at high volumes.
3. Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- RCF HDL-20A Active Line Array Module (2 units)
- Cables d'alimentació
- Manual d'usuari (aquest document)
4. Característiques
The RCF HDL-20A Active Line Array Module incorporates advanced technology for superior audio performance:
- Potent Amplificació: 1200W peak, 600W RMS 2-way digital ampmés viu.
- High-Performance Transducers: Two 10-inch woofers with 2.5-inch voice coils for robust bass, and a 3-inch voice coil compression driver (RCF CD850) for clear vocal range and high definition.
- DSP avançat: Integrated Digital Signal Processing for cluster and HF projection correction, including special presets for indoor and high curving applications.
- Configurable Mechanics: Angles between cabinets are selectable with 2-degree resolution, allowing for true J-shaped or spiral array configurations.
- Armari resistent: Molded from a special polypropylene composite material designed to dampen vibrations, ensuring reliability and strength for intensive use.
- SPL alt: Stable power output at very high sound pressure levels.
5. Configuració
Una configuració adequada és crucial per a un rendiment i una seguretat òptims.
5.1 Physical Placement and Rigging
The HDL-20A is designed for line array configurations. Consult a qualified rigging professional for safe suspension. Ensure all rigging points and hardware are rated for the combined weight of the modules.

Figura 5.1: Frontal view of the RCF HDL-20A module, showing the protective grille and RCF logo.

Figura 5.2: Front inclinat view of the RCF HDL-20A module, highlighting its compact design.

Figure 5.3: Detail of the robust integrated handle for easy transport and positioning.
5.2 Ajust d'angle
The HDL-20A features a precise angle adjustment system. Use the provided pins to set the desired splay angle between modules in 2-degree increments. This allows for creating various array curvatures, including J-shaped or spiral arrays, to optimize sound coverage for the venue.

Figura 5.4: Detallada view of the angle adjustment mechanism, showing pin positions for various splay angles (0°, 2°, 4°, 6°, 8°, 10°, 12°, 15°).

Figura 5.5: Panell posterior view, illustrating the angle adjustment mechanism on the left side and power input/link on the right.
5.3 Connexions
Connect audio and power cables as follows:
- Entrada equilibrada: Use an XLR cable to connect your audio source (mixer, processor) to the "BALANCED INPUT" connector.
- Balanced Link: Use an XLR cable to link the audio signal to additional HDL-20A modules or other audio equipment.
- Alimentació: Connect the main power cable to the "POWER IN" connector.
- Enllaç d'alimentació: Use a power link cable to daisy-chain power to other HDL-20A modules. Ensure the total current draw does not exceed the circuit breaker limits.

Figura 5.6: Detallada view of the rear control panel, showing Balanced Input, Balanced Link, Volume control, DSP presets, Power In, and Power Link connectors.

Figura 5.7: Part posterior completa view of the RCF HDL-20A, showing the integrated handles, heat sinks, and the control/connection panel.
6. Funcionament
Once connected, follow these steps for operation:
- Encès: Ensure all connections are secure, then switch the "POWER ON" button to the ON position. The "POWER" LED indicator will illuminate.
- Ajust de volum: Use the "VOLUME" knob on the rear panel to set the output level. Start with a low volume and gradually increase it.
- Presets DSP: The HDL-20A features DSP presets for various applications.
- CLUSTER: Adjusts for different array sizes and configurations.
- HF PROJECTION: Optimizes high-frequency dispersion.
- INDOOR/HIGH CURVING: Specific presets for indoor environments or highly curved array setups. Refer to the indicators on the rear panel to select the appropriate setting.
- Monitorització del senyal: Observe the "SIGNAL" and "LIMITER" LEDs. The "SIGNAL" LED indicates audio presence. The "LIMITER" LED illuminates when the internal limiter is active, preventing distortion. If the limiter is constantly active, reduce the input volume.
7. Manteniment
Regular maintenance ensures the longevity and performance of your HDL-20A module.
- Neteja: Feu servir un drap suau i sec per netejar l'exterior. No utilitzeu productes de neteja abrasius ni dissolvents.
- Inspecció: Periodically check all cables and connectors for wear or damage. Ensure all rigging hardware is secure.
- Emmagatzematge: When not in use, store the module in a dry, dust-free environment, ideally in a protective case.
8. Solució De Problemes
Si teniu problemes, consulteu la taula següent:
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Power cable disconnected; Power switch off; Blown fuse; No power from outlet. | Check power cable connection; Ensure power switch is ON; Check fuse (refer to qualified technician); Test outlet with another device. |
| Sense sortida de so | Input cable disconnected/faulty; Volume too low; Source device not sending signal; DSP preset incorrect. | Check XLR input cable; Increase volume; Verify audio source is active; Check DSP preset settings. |
| So distorsionat | Input signal too high (clipping); Volume too high; Faulty cable. | Reduce input level from source; Lower the module's volume; Check/replace audio cables. Observe "LIMITER" LED. |
| Sobreescalfament | Blocked ventilation; Prolonged operation at high levels in hot environment. | Ensure clear airflow around heat sinks; Reduce operating level; Allow unit to cool down. |
Si el problema persisteix després d'intentar aquestes solucions, poseu-vos en contacte amb el servei d'atenció al client de RCF o amb un tècnic de servei qualificat.
9. Especificacions
Key technical specifications for the RCF HDL-20A Active Line Array Module:
| Característica | Detall |
|---|---|
| Model | HDL-20A |
| Tipus d'altaveu | Active Line Array Module (Woofer) |
| AmpPoder més viu | 600 Watts RMS (1200 Watts Peak) |
| Diàmetre del woofer | Two 10 Inches (2.5" voice coil) |
| Controlador de compressió | 3 Inches (2" voice coil, RCF CD850) |
| Mode de sortida d'àudio | estèreo |
| Tecnologia de connectivitat | Wired (XLR, PowerCON) |
| Característica especial | Bass Boost, DSP Processing |
| Usos recomanats | Indoor Sound Reinforcement |
| Mètode de control | Manual (Volume, DSP Presets) |
| Dimensions del producte | 31.1 x 19.69 x 14.76 polzades |
| Fabricant | RCF |
| Primer disponible | 21 de novembre de 2012 |
10. Garantia i Suport
For warranty information, please refer to the official RCF website or the warranty card included with your product. For technical support, service, or spare parts, please contact RCF customer service directly or your authorized RCF dealer.
RCF SpA
VIA RAFFAELLO SANZIO, 13
42124 REGGIO EMILIA - ITALY





