Marantz MM7055 5-kanals strømforsyning Amplivligere

1. Introduktion

The Marantz MM7055 is a high-performance 5-channel power amplifier designed to enhance your home theater audio experience. It delivers 140 watts of high-current output per channel, making it suitable for driving demanding speakers in a 5.1 home theater system. This amplifier supports both balanced (XLR) and single-ended (RCA) inputs, offering flexible connectivity options. Its robust construction and advanced circuitry ensure stable and accurate audio reproduction.

Nøglefunktioner omfatter:

• 140W (8 ohms, 20Hz-20kHz) x5 Power Amplivligere
• Current feedback power amplifier with Marantz HDAM circuit
• XLR & RCA inputs for all 5 channels
• Aftagelig strømledning
• New stylish front design

Figur 1: Forside view of the Marantz MM7055 5-Channel Power Ampløfter, showcasing its sleek black finish and central illuminated porthole display.

2. Hvad er der i æsken

Når du åbner pakken, skal du kontrollere, at alle følgende varer er inkluderet:

• Marantz MM7055 5-kanals strømforsyning Amplivligere
• Aftagelig strømledning
• Brugermanual (dette dokument)
• Other accessories as specified by the manufacturer (e.g., remote control, batteries if applicable, though not explicitly listed for this amplivligere)

3. Opsætning og forbindelser

Før tilslutning af amplifier, ensure all components are powered off and unplugged from the wall outlet. Refer to the rear panel diagram for connection points.

Figur 2: Bagside view of the Marantz MM7055, displaying the balanced (XLR) and single-ended (RCA) inputs for each of the five channels, along with the gold-plated speaker terminals and remote control connections.

3.1. Lydindgangsforbindelser

The MM7055 offers both balanced (XLR) and single-ended (RCA) inputs for each channel. Choose the input type that matches your pre-amplifier or AV receiver's outputs for optimal signal integrity.

• XLR (Balanced) Inputs: For professional-grade connections, connect XLR cables from your pre-amplifier's balanced outputs to the corresponding XLR inputs on the MM7055.
• RCA (Single-Ended) Inputs: For standard connections, connect RCA cables from your pre-amplifier's RCA outputs to the corresponding RCA inputs on the MM7055.
• Ensure that the input selector switch (if present, or automatically detected) for each channel is set correctly for the type of cable used.

3.2. Højttalerforbindelser

The MM7055 features gold-plated, four-way binding post speaker terminals. Use high-quality speaker wire for the best performance.

• Identify the positive (+) and negative (-) terminals on both your speakers and the amplivligere.
• Tilslut den positive (+) terminal på hver højttaler til den tilsvarende positive (+) terminal på amplivligere.
• Tilslut den negative (-) terminal på hver højttaler til den tilsvarende negative (-) terminal på amplivligere.
• Ensure all connections are tight and secure to prevent signal loss or short circuits.
• The MM7055 is capable of long-term power delivery into low-impedance speakers.

3.3. Strømtilslutning

Connect the detachable power cord to the AC inlet on the rear of the amplifier, then plug the other end into a suitable wall outlet.

4. Betjeningsvejledning

4.1. Tænd/sluk

• For at tænde for amplifier, press the "POWER ON/STANDBY" button located on the front panel. The illuminated porthole display will light up.
• For at sætte amplifier into standby mode, press the "POWER ON/STANDBY" button again.
• For total remote control convenience, the MM7055 includes input and output jacks for DC trigger pulses as well as RC-5 jacks, allowing integration with compatible control systems.

4.2. Afspilning af lyd

Once connected to a pre-amplifier or AV receiver, the MM7055 will amplify the audio signals received from your source components. Adjust the volume and select audio modes via your pre-amplivligere eller AV -modtager.

The MM7055 is ideal for a 5.1 home theater system, providing powerful and clear audio for movie soundtracks and music. For more complex home theater systems, the MM7055 can be paired with one or several MM7025s (sold separately) to create an immersive 7.1 or 9.1 audio experience.

5. Vedligeholdelse

5.1. Rensning

To maintain the appearance of your amplifier, wipe the exterior surfaces with a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents, as these may damage the finish. Ensure the unit is powered off and unplugged before cleaning.

5.2. Ventilation

The MM7055 employs an extruded aluminum thermal tunnel with temperature-sensing forced air cooling for efficient heat dissipation. Ensure adequate ventilation around the amplifier to prevent overheating. Do not block any ventilation openings. This configuration assures cool operating temperatures for long-term reliability, even under substantial output.

6. Fejlfinding

If you experience issues with your Marantz MM7055, please consult the following common troubleshooting steps before seeking professional service.

• Ingen strøm:
  • Ensure the power cord is securely connected to both the ampstrømforsyning og en fungerende stikkontakt.
  • Verify the wall outlet is supplying power (test with another device).
  • Check if the "POWER ON/STANDBY" button has been pressed.
• Ingen lyd:
  • Confirm that all audio input cables (XLR or RCA) are securely connected between the pre-amplifier/receiver and the MM7055.
  • Kontroller alle højttalerledningsforbindelser på begge amplifier and the speakers, ensuring correct polarity (+ to + and - to -).
  • Verify that your pre-amplifier/receiver is powered on, has a source selected, and its volume is turned up.
  • Ensure the correct input type (XLR/RCA) is selected on the amplifier if there is a manual switch (though typically auto-sensing).
• Forvrænget lyd:
  • Kontrollér alle kabelforbindelser for løse eller beskadigede.
  • Sørg for, at højttalerledningerne ikke er flossede eller kortslutter.
  • Reduce the volume level from your pre-amplifier/receiver to see if distortion persists, indicating potential clipping.
  • Verify that the impedance of your speakers is compatible with the amplivligere.
• Overophedning:
  • Sørg for amplifier has adequate ventilation and is not placed in an enclosed space without airflow.
  • Remove any objects blocking the ventilation openings.
  • Allow the unit to cool down if it has been operating at high volumes for extended periods.

The chassis of the MM7055 is heavy gauge steel, designed to provide maximum isolation from external vibration and minimize electromagnetic and radio frequency interference, contributing to clear, uninterrupted sound.

7. Specifikationer

8. Garanti og support

Marantz products are designed for reliability and performance. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Marantz website. Warranty coverage typically includes defects in materials and workmanship for a specified period from the date of purchase.

For technical support, service, or inquiries regarding your MM7055 amplifier, please contact Marantz customer support or an authorized service center. Contact information can usually be found on the Marantz webwebstedet eller i den dokumentation, der følger med dit produkt.

Note: Protection plans offered by third parties (e.g., Amazon Protection Plans) are separate from the manufacturer's warranty and have their own terms and conditions.