Manuale utente del mixer stereo microfono/linea XLR a 4 canali Rolls MX401

1. Introduzione

The Rolls MX401 is a compact and versatile 4-channel XLR Mic/Line Stereo Mixer designed for robust live and studio mixing applications. This manual provides detailed instructions to ensure proper setup, operation, and maintenance of your MX401 unit, allowing you to achieve optimal audio performance.

2. Prodotto finitoview

The MX401 features four independent XLR inputs, each with dedicated controls for level, pan, and mic/line-level switching. It also includes individual phantom power for condenser microphones. The unit offers balanced XLR outputs and a 3.5mm stereo output for flexible connectivity. A convenient clip indicator light assists in setting appropriate input levels.

Caratteristiche principali:

• 4 Balanced XLR Inputs
• Individual Level Control per Channel
• Individual Pan Control per Channel
• Mic/Line Level Switching per Channel
• Individual Phantom Power per Channel
• Master Output Level Control
• Indicatore luminoso della clip
• 2 Balanced XLR Outputs
• 1 x 3.5mm Stereo Output
• DC Power Supply or 9V Battery Operation

Figura 1: Dall'alto verso il basso view of the Rolls MX401 mixer, showing input and output labels.

Figure 2: Front panel of the Rolls MX401 mixer, displaying channel controls, output level, and power switch.

3. Impostazione

3.1 Alimentazione dell'unità

The MX401 can be powered using the included DC power supply or two 9V batteries. Ensure the unit is switched OFF before connecting power.

• Potenza CC: Connect the included DC power supply to the 'VDC' input jack on the front panel. Plug the power supply into an appropriate AC outlet.
• Potenza della batteria: Open the battery compartment on the side of the unit and insert two fresh 9V batteries, observing correct polarity. Close the compartment securely.

3.2 Collegamento di microfoni e ingressi di linea

The MX401 features four XLR inputs, each capable of accepting either microphone or line-level signals.

1. Connect your microphones or line-level devices to the XLR INPUTs (CH 1-4) on the rear panel.
2. For each channel, use the MICROFONO/LINEA switch to select the appropriate input level:
• Impostato su Microfono for microphones.
• Impostato su LINEA for line-level devices (e.g., keyboards, CD players).
3. If using condenser microphones, activate POTENZA FANTASMA for the respective channel by pressing the PHANTOM POWER button. The LED will illuminate when active.

3.3 Collegamento delle uscite

The MX401 provides balanced XLR outputs and a 3.5mm stereo output.

• Connect your main audio system (e.g., power amplifier, recording device) to the balanced XLR OUTPUTS (LEFT, RIGHT) sul pannello posteriore.
• For connecting to consumer-grade audio equipment or headphones, use the 3.5mm STEREO OUTPUT jack sul pannello frontale.

4. Istruzioni per l'uso

4.1 Accensione/spegnimento

Dopo aver effettuato tutti i collegamenti, commutare il ACCENSIONE-SPEGNIMENTO toggle on the front panel to the ON position. The 'pwr' LED will illuminate.

4.2 Controlli dei canali

Each of the four input channels (CH 1-4) has independent controls:

• LIVELLO: Adjusts the input gain for the respective channel. Start with this knob fully counter-clockwise and slowly increase it until the desired volume is achieved without clipping.
• PADELLA: Controls the stereo positioning of the channel's signal between the Left and Right outputs. Turn clockwise for more Right signal, counter-clockwise for more Left signal, and center for an even spread.
• Interruttore MIC/LINE: Selects between microphone-level and line-level input sensitivity.
• PHANTOM POWER Button: Activates +48V phantom power for condenser microphones connected to that channel.

4.3 Output Level Control

The master output level is controlled by the LIVELLO DI USCITA knob on the front panel. Adjust this to set the overall volume of the mixed signal sent to the outputs.

4.4 Clip Indicator

IL CLIP LED on the front panel illuminates when the input or output signal is too high, indicating potential distortion. If the CLIP LED lights up, reduce the corresponding channel LEVEL or the master OUTPUT LEVEL until the LED no longer illuminates during peak signal levels.

5. Manutenzione

To ensure the longevity and optimal performance of your Rolls MX401, follow these maintenance guidelines:

• Pulizia: Utilizzare un panno morbido e asciutto per pulire l'esterno dell'unità. Evitare l'uso di detergenti abrasivi, solventi o cere, poiché potrebbero danneggiare la finitura.
• Magazzinaggio: Quando non viene utilizzato per lunghi periodi, conservare il mixer in un luogo fresco e asciutto, lontano dalla luce solare diretta e da temperature estreme.
• Sostituzione della batteria: If using battery power, replace batteries when the 'pwr' LED dims or the unit ceases to function. Remove batteries if the unit will not be used for a long time to prevent leakage.
• Ventilazione: Assicurare una ventilazione adeguata attorno all'unità per evitare il surriscaldamento. Non ostruire le aperture di ventilazione.

6. Risoluzione Dei Problemi

If you encounter issues with your MX401, refer to the following common troubleshooting steps:

• Nessun potere:
  • Check if the DC power supply is securely connected and plugged into a working outlet.
  • If using batteries, ensure they are fresh and inserted with correct polarity.
  • Verify the POWER ON-OFF switch is in the ON position.
• Nessun suono:
  • Confirm all input and output cables are securely connected.
  • Check that the input device is powered on and sending a signal.
  • Ensure channel LEVEL knobs and the master OUTPUT LEVEL knob are turned up.
  • Verify the MIC/LINE switches are set correctly for your input devices.
  • If using condenser microphones, ensure PHANTOM POWER is activated for the respective channels.
  • Check the volume and input selection on your connected audio system.
• Suono distorto/clipping:
  • If the CLIP LED illuminates, reduce the corresponding channel LEVEL or the master OUTPUT LEVEL until it no longer lights up.
  • Ensure the MIC/LINE switches are correctly set. Using MIC setting for a line-level device can cause distortion.
• Ronzio o rumore:
  • Assicurarsi che tutti i cavi siano in buone condizioni e adeguatamente schermati.
  • Try using balanced XLR cables for inputs and outputs to minimize noise.
  • Avoid running audio cables parallel to power cables.

7. Specifiche

8. Garanzia e supporto

For warranty information, technical support, or service inquiries regarding your Rolls MX401 mixer, please refer to the documentation included with your purchase or visit the official Rolls website. Contacting the manufacturer directly will provide the most accurate and up-to-date assistance.