1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Ashly Protea 4.8SP Loudspeaker System Processor. The Protea 4.8SP is a professional-grade digital signal processor designed for live sound environments and fixed installations, offering advanced audio processing capabilities for loudspeaker management.
2. Consignes de sécurité
Please read and understand all safety instructions before operating this device. Failure to do so may result in injury or damage to the equipment.
- Source d'alimentation : Connect the unit only to the specified AC power source (100-240VAC, 50-60Hz).
- Ventilation: Assurez une ventilation adéquate. Ne bloquez pas les ouvertures de ventilation.
- Humidité: N'exposez pas l'appareil à la pluie ou à l'humidité.
- Entretien: Confiez toute intervention d'entretien à un personnel qualifié.
- Mise à la terre : Always ensure proper grounding to prevent electric shock.
3. Contenu du colis
Vérifiez que tous les éléments sont présents dans le colis :
- Ashly Protea 4.8SP Loudspeaker System Processor
- Cordon d'alimentation
- Câble USB
- Manuel de l'utilisateur (ce document)
4. Produit terminéview
4.1 Panneau avant
The front panel provides access to all essential controls and indicators for real-time monitoring and adjustments.

Figure 1 : Devant view of the Ashly Protea 4.8SP, showing the LCD display, input/output meters, navigation buttons, and USB port.
- Écran LCD : Displays current settings, menus, and parameters.
- Input/Output Meters: Voyants LED pour les niveaux de signal.
- Boutons de navigation: For menu navigation and parameter adjustment (Esc, Enter, Gain, EQ, Delay, Xover, Mute, Link).
- Port USB : For connecting to a computer for software control.
- Input/Output Select Buttons: To select specific channels for adjustment.
4.2 Panneau arrière
The rear panel houses all audio input and output connectors, as well as power and communication ports.

Figure 2 : Arrière view of the Ashly Protea 4.8SP, showing balanced XLR inputs (A, B, C, D), balanced XLR outputs (1-8), USB port, RS-232 port, and AC power inlet.
- Inputs (A, B, C, D): Four balanced XLR input connectors.
- Sorties (1-8) : Eight balanced XLR output connectors.
- Port USB : For connecting to a computer for software control.
- Port RS-232 : For serial communication and control.
- Prise d'alimentation CA : Pour brancher le cordon d'alimentation.
5. Installation
5.1 Installation physique
The Protea 4.8SP is designed for standard 19-inch rack mounting. Ensure sufficient space for ventilation around the unit.
- Mount the unit securely in a standard equipment rack using appropriate rack screws.
- Allow at least 1U of space above and below the unit for proper airflow, especially in enclosed racks.
5.2 Connexions audio
Use high-quality balanced XLR cables for all audio connections.
- Connect your audio source(s) (e.g., mixing console) to the INPUTS (A, B, C, D) sur le panneau arrière.
- Connectez le OUTPUTS (1-8) on the rear panel to your power amplifiers or other audio destinations.
5.3 Connexion d'alimentation
- Assurez-vous que l'interrupteur d'alimentation de l'appareil est en position OFF.
- Branchez le cordon d'alimentation fourni à la Prise d'alimentation CA on the rear panel and then to a grounded AC outlet.
5.4 Installation du logiciel (facultatif)
For advanced control and programming, install the Ashly Protea software on your computer.
- Download the latest Protea software from the official Ashly website: ashly.com/software-downloads/
- Installez le logiciel en suivant les instructions à l'écran.
- Connect your computer to the Protea 4.8SP using the supplied USB cable (either front or rear panel USB port).
- Launch the Protea software to establish communication with the device.
6. Mode d'emploi
6.1 Mise sous/hors tension
- To power on, flip the power switch on the rear panel to the ON position.
- Pour éteindre l'appareil, basculez l'interrupteur d'alimentation sur la position OFF.
6.2 Commandes du panneau avant
The LCD screen and navigation buttons allow direct control over all processing parameters.
- Utilisez le Sélection d'entrée buttons (A, B, C, D) to choose the input channel you wish to configure.
- Utilisez le Sélection de sortie buttons (1-8) to choose the output channel.
- Press the dedicated function buttons (Gain, EQ, Delay, Xover, Mute, Link) to access specific processing blocks.
- Use the rotary encoder and Enter/Esc buttons to navigate menus and adjust parameter values displayed on the LCD.
- Le Rappel button allows loading saved presets, and Sauvegarder allows storing current settings.
6.3 Software Control (Protea Software)
The Protea software offers a graphical user interface for intuitive and detailed control of all system parameters.
- Once connected via USB, the software will detect the 4.8SP.
- The software provides visual representations of crossovers, EQs, compressors, and delays, making configuration easier.
- You can create, save, and recall complex system configurations.
- Protection par mot de passe : The software allows you to set a password to protect your settings from unauthorized tamper.
6.4 Key Processing Features
- Croisement : Configure frequency division for multi-way loudspeaker systems.
- Égalisation (EQ) : Parametric and graphic EQ options for precise tonal shaping.
- Compression/Limiting: Dynamic range control to protect loudspeakers and maintain consistent levels.
- Retard: Time alignment for loudspeakers, crucial for phase coherence in complex systems.
7. Entretien
- Nettoyage: Utilisez un chiffon doux et sec pour nettoyer l'extérieur de l'appareil. N'utilisez pas de nettoyants liquides ni de solvants.
- Ventilation: Periodically check that ventilation openings are clear of dust and debris.
- Connexions de câble : Ensure all audio and power cables are securely connected and free from damage.
8. Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| Pas de courant | Power cord disconnected; Power switch off; Blown fuse. | Check power cord connection; Ensure power switch is ON; Consult qualified technician for fuse replacement. |
| Pas de sortie audio | Incorrect input/output routing; Mute engaged; Gain set too low; Faulty cables. | Verify routing in software or front panel; Check mute status; Increase gain; Test/replace cables. |
| Problème de connexion du logiciel | USB cable issue; Driver not installed; Software version mismatch. | Try a different USB port/cable; Reinstall Protea software and drivers; Ensure software is up-to-date. |
| Audio déformé | Input/output levels too high (clipping); Incorrect processing settings. | Reduce input/output gain to prevent clipping (monitor meters); Review EQ, compression, and crossover settings. |
9. Spécifications
- Nom du modèle : 4.8SP
- Type de haut-parleur : Processeur
- Dimensions du produit : 8.5"P x 19"L x 3.5"H
- Poids de l'article : 9.39 livres
- Technologie de connectivité: USB
- Mode de sortie audio : Stéréo symétrique
- Type de montage : Rack Mount
- Source d'alimentation : Électrique avec fil
- Latence audio : 682 millisecondes
- Nombre de processeurs : 1
- Fabricant: Ashly
10. Garantie et assistance
The Ashly Protea 4.8SP comes with a Limited Warranty. For detailed warranty information, please refer to the warranty card included with your product or visit the official Ashly website.
For technical support, service, or further inquiries, please contact Ashly Audio directly:
- Ashly Audio Website: ashly.com/support/
- Se référer à la website for contact information and the latest support resources.