JB-systems B4.2 Mediamix -mediasoittimen/mikserin käyttöohje

1. Johdanto

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. Tärkeitä turvallisuusohjeita

• Virtalähde: Ensure the unit is connected to a power supply within the specified voltage range (230 Volt AC). Always use the provided power cable.
• Ilmanvaihto: Do not block any ventilation openings. Install in accordance with the manufacturer's instructions to prevent overheating.
• Vesi ja kosteus: Do not expose this apparatus to rain or moisture. Do not use near water or in damp ympäristöissä.
• Puhdistus: Puhdista vain kuivalla liinalla. Irrota pistoke pistorasiasta ennen puhdistamista.
• Huolto: Do not attempt to service this unit yourself. Refer all servicing to qualified service personnel. Opening the unit may expose you to dangerous voltages tai muita vaaroja.
• Sijoitus: 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. Pakkauksen sisältö

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
• Vaihtovirtajohto
• FM antenni
• Bluetooth antenni
• Remote Control (IRC-A)
• Terminal Blocks (for Emergency Input and External Mute)

Kuva 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. Etupaneelin säätimet ja liitännät

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

Kuva 4.1: Edessä 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): Liitä mikrofoni tähän.
• MIC-taso: Säätää mikrofonin tulotasoa.
• 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.
• Näyttö: Shows current mode, track information, FM frequency, or Bluetooth status.
• SOURCE-painike: Selects input source (USB, SD, FM, Bluetooth, Line 1, Line 2).
• MODE-painike: 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: Säätää kuulokeliitännän äänenvoimakkuutta.
• PHONES (1/4" Jack): Kuulokeliitäntä monitorointia varten.
• VIRTA LED: Indicates the unit's power status.
• TASO-mittarit: Visual indication of output signal levels.

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

Kuva 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.

Kuva 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. Takapaneelin liitännät

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

Kuva 5.1: Takaosa 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

• Verkkovirran tulo: Power connection for the unit.
• MASTER 1/2 Outputs (Balanced XLR & Unbalanced RCA): Main audio outputs to connect to amppelastuslaitteita tai kaiuttimia.
• REC-lähtö (RCA): Stereolähtö tallennuslaitteeseen kytkemistä varten.
• LINE 1/2 Inputs (RCA): Stereo inputs for connecting external audio sources like CD players or other mixers.
• Mikrofonitulo (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: Mukana toimitetun FM-antennin kytkemistä varten.
• BLUETOOTH ANTENNA Connector: For connecting the supplied Bluetooth antenna.

6. Asennus ja asennus

6.1. Telineen asennus

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. Virtaliitäntä

1. Varmista, että laitteen virtakytkin on OFF-asennossa.
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. Ääniliitännät

1. Syöttölähteet: 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. Lähdöt: 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. Antenniliitännät

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. Käyttöohjeet

7.1. Virta päälle / pois

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. Paina LÄHDE button until 'USB' or 'SD' is displayed.
3. Laite alkaa automaattisesti toistaa yhteensopivia äänitiedostoja files.
4. Käytä SEQ buttons (Play/Pause, Next/Previous) to control playback.
5. Paina MODE button to cycle through playback modes (e.g., repeat one, repeat all, random).

7.3. Bluetooth-käyttö

1. Paina LÄHDE 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. FM-radio

1. Paina LÄHDE -painiketta, kunnes näytössä näkyy 'FM'.
2. Käytä 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. Mikrofonitulo

1. Connect your microphone to either the front or rear MIC input.
2. Säädä MIC-taso knob on the front panel to achieve the desired volume.
3. Käytä MIC EQ (High/Low) knobs to adjust the tone of the microphone.

7.6. Mixer Functions

1. Säädä yksilöllisesti TASO knobs for Line 1, Line 2, and the media player to balance the input sources.
2. Käytä MASTER 1 ja MASTER 2 Level knobs to control the overall output volume.
3. The MASTER EQ (High/Low) allows for overall tone adjustment of the main mix.
4. Liitä kuulokkeet liittimeen PUHELIMET jack and adjust the CUE Volume seurantaa varten.

7.7. Remote Control (IRC-A)

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

Kuva 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.
• SOURCE-painike: Selaa tulolähteitä.
• VOLUME Up/Down: Säätää pääkaiuttimen lähtöäänenvoimakkuutta.

8. Huolto

• Puhdistus: Regularly wipe the unit with a soft, dry cloth. Do not use abrasive cleaners, solvents, or chemical sprays.
• Ilmanvaihto: Ensure that the ventilation openings are free from dust and debris to maintain proper airflow.
• Varastointi: Jos laitetta säilytetään pitkään, irrota se virtalähteestä ja säilytä sitä viileässä, kuivassa paikassa, poissa suorasta auringonvalosta ja äärimmäisistä lämpötiloista.

9. Vianetsintäopas

• Ei virtaa:
  • Check if the power cable is securely connected to the unit and the power outlet.
  • Varmista, että pistorasia on toimiva.
  • Verify the power switch on the front panel is in the ON position.
• Ei äänilähtöä:
  • Check all audio cable connections to and from the unit.
  • Ensure the correct input source is selected using the LÄHDE -painiketta.
  • Varmista, että MASTER-taso knobs are turned up.
  • Check the volume levels on your connected ampnostin tai teholliset kaiuttimet.
  • If using a microphone, ensure its Taso nuppi on käännetty ylös.
• Bluetooth ei muodosta yhteyttä:
  • 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.
  • Kokeile laitteen pariliitoksen purkamista ja pariliitoksen muodostamista uudelleen.
• USB/SD Media Not Playing:
  • Varmista, että USB-muistitikku tai SD-kortti on asetettu oikein.
  • Varmista, että 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. Tekniset tiedot

• Malli: B4.2 Mediamix
• Merkki: JBSYSTEMS
• Tuotteen mitat: 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.)
• Valmistajan viite: 001BE/8400
• Virtalähde: Johdollinen sähkö
• Voitage: 230 volttia
• Yhteystekniikka: Bluetooth
• Ensimmäinen saatavilla oleva päivämäärä: 15. tammikuuta 2020

11. Takuu ja tuki

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.