JB-systems B4.2 Mediamix Media Player/Mixer User Manual

1. Introdução

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. Instruções importantes de segurança

• Fonte de energia: Ensure the unit is connected to a power supply within the specified voltage range (230 Volt AC). Always use the provided power cable.
• Ventilação: Do not block any ventilation openings. Install in accordance with the manufacturer's instructions to prevent overheating.
• Água e Umidade: Do not expose this apparatus to rain or moisture. Do not use near water or in damp ambientes.
• Limpeza: Limpe apenas com um pano seco. Desligue da tomada antes de limpar.
• Manutenção: 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.
• Colocação: 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. Conteúdo da embalagem

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
• Cabo de alimentação AC
• 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. Front Panel Controls and Connections

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: Frente 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): Conecte um microfone aqui.
• Nível MIC: Ajusta o nível de entrada do microfone.
• 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.
• Mostrar: Shows current mode, track information, FM frequency, or Bluetooth status.
• Botão FONTE: Selects input source (USB, SD, FM, Bluetooth, Line 1, Line 2).
• Botão 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: Ajusta o volume da saída de fone de ouvido.
• FONES DE OUVIDO (Conector de 1/4"): Headphone output for monitoring.
• LED DE FORÇA: 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. Conexões do painel 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

• Entrada de rede CA: Power connection for the unit.
• MASTER 1/2 Outputs (Balanced XLR & Unbalanced RCA): Main audio outputs to connect to ampsalva-vidas ou alto-falantes amplificados.
• 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 microfone (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. Configuração e instalação

6.1. Montagem em 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. Conexão de energia

1. Certifique-se de que o interruptor de alimentação da unidade esteja na posição DESLIGADO.
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. Conexões de áudio

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. Conexões de 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. Instruções de operação

7.1. Ligar / desligar

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. Pressione o FONTE button until 'USB' or 'SD' is displayed.
3. A unidade começará automaticamente a reproduzir áudio compatível. files.
4. Use o SEQ buttons (Play/Pause, Next/Previous) to control playback.
5. Pressione o MODO button to cycle through playback modes (e.g., repeat one, repeat all, random).

7.3. Operação Bluetooth

1. Pressione o FONTE button until 'BT' (Bluetooth) is displayed. The unit will enter pairing mode, indicated by a flashing 'BT' on the display.
2. No seu dispositivo com Bluetooth (smartphone, tablet), procure por dispositivos Bluetooth disponíveis.
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. Rádio FM

1. Pressione o FONTE pressione o botão até que 'FM' seja exibido.
2. Use 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 microfone

1. Connect your microphone to either the front or rear MIC input.
2. Ajuste o Nível MIC knob on the front panel to achieve the desired volume.
3. Use o equalizador de microfone (High/Low) knobs to adjust the tone of the microphone.

7.6. Funções do Mixer

1. Ajuste o indivíduo NÍVEL knobs for Line 1, Line 2, and the media player to balance the input sources.
2. Use o MESTRE 1 e MASTER 2 Level knobs to control the overall output volume.
3. O EQ MESTRE (High/Low) allows for overall tone adjustment of the main mix.
4. Conecte os fones de ouvido ao TELEFONES macaco e ajuste o CUE Volume para monitoramento.

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: Play, Pause, Next Track, Previous Track.
• FM Radio Presets (1-9): Directly select saved FM stations.
• MEDIA / RADIO Buttons: Navigate between media player and radio modes.
• Botão FONTE: Percorre ciclos as fontes de entrada.
• VOLUME Up/Down: Ajusta o volume de saída principal.

8. Manutenção

• Limpeza: Regularly wipe the unit with a soft, dry cloth. Do not use abrasive cleaners, solvents, or chemical sprays.
• Ventilação: Certifique-se de que as aberturas de ventilação estejam livres de poeira e detritos para manter o fluxo de ar adequado.
• Armazenar: Se for armazenar a unidade por um período prolongado, desconecte-a da energia e guarde-a em local fresco e seco, longe da luz solar direta e de temperaturas extremas.

9. Guia de solução de problemas

• Sem energia:
  • Check if the power cable is securely connected to the unit and the power outlet.
  • Certifique-se de que a tomada elétrica esteja funcionando.
  • Verify the power switch on the front panel is in the ON position.
• Sem saída de som:
  • Check all audio cable connections to and from the unit.
  • Ensure the correct input source is selected using the FONTE botão.
  • Verifique se o Nível mestre knobs are turned up.
  • Check the volume levels on your connected ampamplificador ou alto-falantes amplificados.
  • If using a microphone, ensure its Nível O botão está girado para cima.
• Bluetooth não 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.
  • Tente desemparelhar e emparelhar o dispositivo novamente.
• USB/SD Media Not Playing:
  • Certifique-se de que a unidade USB ou o cartão SD esteja inserido corretamente.
  • Verifique se 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. Especificações técnicas

• Modelo: B4.2 Mediamix
• Marca: JBSISTEMAS
• Dimensões 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.)
• Referência do fabricante: 001BE/8400
• Fonte de energia: Elétrico com fio
• Volumetage: 230 volts
• Tecnologia de conectividade: Bluetooth
• Primeira data disponível: 15 de janeiro de 2020

11. Garantia e Suporte

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.