Manual do usuario do reprodutor/mesturador multimedia JB-systems B4.2 Mediamix

1. Introdución

The JB-systems B4.2 Mediamix is a versatile media player and mixer designed for professional audio applications. It integrates a media player capable of reading USB drives and SD cards, an FM radio tuner, and a Bluetooth receiver, all within a compact 1U rack-mountable chassis. This manual provides detailed instructions for the safe and efficient operation of your B4.2 Mediamix unit.

2. Instrucións de seguridade importantes

• Fonte de alimentación: Asegúrese de que a unidade estea conectada a unha fonte de alimentación dentro do voltaxe especificadotage range (230 Volt AC). Always use the provided power cable.
• Ventilación: Do not block any ventilation openings. Install in accordance with the manufacturer's instructions to prevent overheating.
• Auga e humidade: Do not expose this apparatus to rain or moisture. Do not use near water or in damp ambientes.
• Limpeza: Clean only with a dry cloth. Disconnect from power before cleaning.
• Servizo: Do not attempt to service this unit yourself. Refer all servicing to qualified service personnel. Opening the unit may expose you to dangerous voltages ou outros perigos.
• Colocación: Place the unit on a stable, level surface or mount it securely in a 19-inch rack. Avoid placing it near heat sources or in direct sunlight.

3. Contido do paquete

Carefully unpack your B4.2 Mediamix and check that all items listed below are present and in good condition. If any items are missing or damaged, contact your dealer immediately.

• JB-systems B4.2 Mediamix unit
• Cable de alimentación de CA.
• Antena FM
• Antena Bluetooth
• Remote Control (IRC-A)
• Terminal Blocks (for Emergency Input and External Mute)

Figura 3.1: Included accessories for the B4.2 Mediamix. This image displays the FM antenna, Bluetooth antenna, various terminal blocks, and a coaxial cable, which are typically supplied with the unit.

4. Controis e conexións do panel frontal

The front panel provides access to all primary controls and inputs for the B4.2 Mediamix. Familiarize yourself with these components for effective operation.

Figura 4.1: Fronte view of the B4.2 Mediamix. This image shows the entire front panel, including microphone inputs, EQ controls, media player section, display, master output controls, and headphone jack.

4.1. Detailed Controls

• MIC Input (1/4" Jack): Connect a microphone here.
• Nivel MIC: Adjusts the input level of the microphone.
• MIC EQ (High/Low): Tone controls for the microphone input.
• AUX LINE Input (1/8" Jack): Auxiliary stereo input for external devices.
• LINE 1/2 Level: Adjusts the input level for Line 1 and Line 2.
• USB/SD Player: Slot for USB drives and SD cards.
• Visualización: Shows current mode, track information, FM frequency, or Bluetooth status.
• Botón SOURCE: Selects input source (USB, SD, FM, Bluetooth, Line 1, Line 2).
• Botón MODE: Changes playback mode (e.g., repeat, random).
• SEQ Buttons: Navigation and playback controls for media player (Play/Pause, Next/Previous).
• MASTER 1/2 Level: Controls the overall output level for Master 1 and Master 2.
• MASTER EQ (High/Low): Tone controls for the master output.
• CUE Volume: Axusta o volume da saída de auriculares.
• PHONES (1/4" Jack): Headphone output for monitoring.
• LED POWER: Indicates the unit's power status.
• LEVEL Meters: Visual indication of output signal levels.

Figura 4.2: Left side of the front panel. This close-up highlights the microphone input, its level control, and the high/low EQ knobs.

Figura 4.3: Center section of the front panel. This image details the USB and SD card slots, the digital display, and the media player control buttons including Source, Mode, and navigation.

Figura 4.4: Right side of the front panel. This close-up shows the Master 1 and Master 2 level controls, master EQ, cue volume, headphone output, and the power level meters.

5. Conexións do panel traseiro

The rear panel houses all the input and output connections for integrating the B4.2 Mediamix into your audio system.

Figura 5.1: Traseira view of the B4.2 Mediamix. This image displays the AC mains input, Master 1 and Master 2 outputs (both balanced and unbalanced), REC output, Line 1 and Line 2 inputs, a dedicated microphone input, emergency input, external mute terminals, and antenna connections for FM and Bluetooth.

5.1. Detailed Connections

• AC MAINS Input: Conexión de alimentación para a unidade.
• MASTER 1/2 Outputs (Balanced XLR & Unbalanced RCA): Main audio outputs to connect to amplevantadores ou altofalantes alimentados.
• REC Output (RCA): Stereo output for connecting to a recording device.
• LINE 1/2 Inputs (RCA): Stereo inputs for connecting external audio sources like CD players or other mixers.
• Entrada de micrófono (XLR): Balanced microphone input.
• EMERGENCY INPUT (Terminal Block): For integration with emergency announcement systems.
• EXTERNAL MUTE (Terminal Block): For remote muting of the unit.
• FM ANTENNA Connector: For connecting the supplied FM antenna.
• BLUETOOTH ANTENNA Connector: For connecting the supplied Bluetooth antenna.

6. Configuración e instalación

6.1. Montaxe en rack

The B4.2 Mediamix is designed for standard 19-inch rack mounting. Secure the unit using appropriate rack screws through the mounting ears on both sides of the front panel. Ensure adequate ventilation around the unit.

6.2. Conexión de alimentación

1. Asegúrese de que o interruptor de alimentación da unidade estea na posición de APAGADO.
2. Connect the supplied AC power cable to the AC MAINS input on the rear panel.
3. Plug the other end of the power cable into a suitable 230 Volt AC power outlet.

6.3. Conexións de audio

1. Fontes de entrada: Connect your external audio sources (e.g., CD players, laptops) to the LINE 1 or LINE 2 RCA inputs on the rear panel. For microphones, use either the front panel 1/4" jack or the rear panel XLR input.
2. Saídas: Connect the MASTER 1 and/or MASTER 2 outputs (XLR for balanced, RCA for unbalanced) to your amplifier, powered speakers, or main sound system. Use the REC output for connecting to a recording device.

6.4. Conexións da antena

1. Screw the supplied FM antenna to the FM ANTENNA connector on the rear panel. Extend the antenna for optimal reception.
2. Screw the supplied Bluetooth antenna to the BLUETOOTH ANTENNA connector on the rear panel.

7. Instrucións de funcionamento

7.1. Acendido/apagado

Press the power button on the front panel to turn the unit ON or OFF. The POWER LED will illuminate when the unit is on.

7.2. Media Player (USB/SD)

1. Insert a USB drive into the USB slot or an SD card into the SD card slot on the front panel.
2. Preme o FONTE button until 'USB' or 'SD' is displayed.
3. A unidade comezará a reproducir automaticamente audio compatible files.
4. Usa o SEQ buttons (Play/Pause, Next/Previous) to control playback.
5. Preme o MODO button to cycle through playback modes (e.g., repeat one, repeat all, random).

7.3. Funcionamento Bluetooth

1. Preme o FONTE button until 'BT' (Bluetooth) is displayed. The unit will enter pairing mode, indicated by a flashing 'BT' on the display.
2. On your Bluetooth-enabled device (smartphone, tablet), search for available Bluetooth devices.
3. Select 'B4.2 Mediamix' from the list to pair. Once paired, the 'BT' indicator will become solid.
4. You can now play audio from your device through the B4.2 Mediamix.

7.4. Radio FM

1. Preme o FONTE botón ata que se mostre "FM".
2. Usa o SEQ buttons to manually tune to a station or press and hold to auto-scan for stations.
3. Stations can be saved as presets using the remote control.

7.5. Entrada de micrófono

1. Connect your microphone to either the front or rear MIC input.
2. Axustar o Nivel MIC knob on the front panel to achieve the desired volume.
3. Usa o MIC EQ (High/Low) knobs to adjust the tone of the microphone.

7.6. Mixer Functions

1. Adjust the individual NIVEL knobs for Line 1, Line 2, and the media player to balance the input sources.
2. Usa o MASTER 1 e MASTER 2 Level knobs to control the overall output volume.
3. O EQ MASTER (High/Low) allows for overall tone adjustment of the main mix.
4. Conecta os auriculares ao TELÉFONOS jack and adjust the CUE Volume para o seguimento.

7.7. Remote Control (IRC-A)

The included remote control provides convenient access to media player and FM radio functions.

Figura 7.1: IRC-A Remote Control. This image displays the remote control unit with buttons for media player transport (play, pause, skip), FM radio presets (1-9), source selection, and volume adjustment.

• Media Player Transport Control: Reproducir, Pausa, Pista seguinte, Pista anterior.
• FM Radio Presets (1-9): Directly select saved FM stations.
• MEDIA / RADIO Buttons: Navigate between media player and radio modes.
• Botón SOURCE: Percorre ciclicamente as fontes de entrada.
• VOLUME Up/Down: Axusta o volume de saída principal.

8. Mantemento

• Limpeza: Regularly wipe the unit with a soft, dry cloth. Do not use abrasive cleaners, solvents, or chemical sprays.
• Ventilación: Ensure that the ventilation openings are free from dust and debris to maintain proper airflow.
• Almacenamento: Se garda a unidade durante un período prolongado, desconéctea da corrente e gárdea nun lugar fresco e seco, lonxe da luz solar directa e de temperaturas extremas.

9. Guía de solución de problemas

• Sen enerxía:
  • Check if the power cable is securely connected to the unit and the power outlet.
  • Asegúrese de que a toma de corrente funcione.
  • Verify the power switch on the front panel is in the ON position.
• Sen saída de son:
  • Check all audio cable connections to and from the unit.
  • Ensure the correct input source is selected using the FONTE botón.
  • Verifique que o Nivel MASTER knobs are turned up.
  • Check the volume levels on your connected amplifier ou altofalantes alimentados.
  • If using a microphone, ensure its Nivel o botón está xirado cara arriba.
• Bluetooth non se conecta:
  • Ensure the B4.2 Mediamix is in Bluetooth mode ('BT' flashing on display).
  • Make sure Bluetooth is enabled on your transmitting device.
  • Move your device closer to the B4.2 Mediamix.
  • Tenta desvincular e volver vincular o dispositivo.
• USB/SD Media Not Playing:
  • Ensure the USB drive or SD card is inserted correctly.
  • Verifique que o files are in a supported audio format (e.g., MP3, WAV).
  • Check if the media is corrupted or empty.
  • Ensure 'USB' or 'SD' is selected as the source.

10. Especificacións técnicas

• Modelo: B4.2 Mediamix
• Marca: JBSYSTEMS
• Dimensións do produto: 5199.99 x 2500 x 950 cm (Note: These dimensions appear unusually large and may represent packaging or an error in source data. Refer to product packaging for accurate dimensions.)
• Referencia do fabricante: 001BE/8400
• Fonte de enerxía: Eléctrico con cable
• Voltage: 230 voltios
• Tecnoloxía de conectividade: Bluetooth
• Primeira data dispoñible: 15 de xaneiro de 2020

11. Garantía e soporte

This product is covered by a manufacturer's warranty. Please refer to the warranty card included with your product or contact your local dealer for specific warranty terms and conditions. For technical support or service inquiries, please contact your authorized JBSYSTEMS dealer or distributor.