1. Introduction
This manual provides essential instructions for the safe and efficient operation of your Marantz AMP 20 16-Channel Power Amplifier and Marantz AV 20 AV Preamplifier. Please read this manual thoroughly before using the system and retain it for future reference. The Marantz AMP 20 delivers up to 200W per channel with high-efficiency Class D amplification, while the AV 20 serves as a sophisticated AV preamplifier, forming a high-performance home theater system.
2. Safety Instructions
- Power Source: Connect the unit only to an AC outlet of the voltage specified on the rear panel.
- Ventilation: Ensure adequate ventilation. Do not block ventilation openings. Maintain a minimum distance of 10 cm (4 inches) from walls or other objects.
- Water and Moisture: Do not expose the unit to rain or moisture. Do not place objects filled with liquids, such as vases, on the unit.
- Heat: Avoid placing the unit near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Cleaning: Unplug the unit from the wall outlet before cleaning. Use a dry cloth only.
- Servicing: Do not attempt to service the unit yourself. Refer all servicing to qualified service personnel.
- Cables: Protect power cords from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
3. Package Contents
Verify that all items listed below are included in your package:
- Marantz AMP 20 16-Channel Power Amplifier
- Marantz AV 20 AV Preamplifier
- Power Cords (x2)
- Remote Control (for AV 20)
- Batteries for Remote Control
- Quick Start Guide
- Safety Instructions
4. Setup
4.1 Physical Placement
Place the AMP 20 and AV 20 on a stable, level surface with adequate space for ventilation. Avoid direct sunlight, heat sources, and areas with high humidity. For optimal performance and aesthetics, the units can be stacked, with the AV 20 typically placed above the AMP 20.
Figure 4.1: The Marantz AMP 20 power amplifier and AV 20 preamplifier stacked vertically, showcasing their elegant black finish and integrated design.
Figure 4.2: The Marantz AMP 20 and AV 20 units neatly placed on a wooden shelf, demonstrating a typical home theater installation setup.
4.2 Connecting Speakers (AMP 20)
The AMP 20 is a 16-channel power amplifier. Connect your speakers to the appropriate speaker terminals on the rear panel of the AMP 20. Ensure correct polarity (+ to + and - to -) for each speaker. The AMP 20 supports various configurations, including bi-amp and bridged modes for maximum power and customization. Refer to the detailed wiring diagrams in the full technical manual for specific advanced configurations.
Figure 4.3: An internal view of the Marantz AMP 20 power amplifier, showing the intricate circuitry and multiple amplifier modules designed for high-fidelity audio output.
4.3 Connecting Sources (AV 20)
Connect your audio and video sources (e.g., Blu-ray player, streaming device, game console) to the input terminals on the rear panel of the AV 20 preamplifier. Use high-quality HDMI cables for video and digital audio, and RCA or XLR cables for analog audio connections. Connect the AV 20's pre-out channels to the corresponding input channels on the AMP 20.
Figure 4.4: An internal view of the Marantz AV 20 AV preamplifier, revealing its sophisticated digital and analog processing components for superior audio and video signal handling.
4.4 Power Connection
Once all audio and video connections are made, connect the supplied power cords to the AMP 20 and AV 20, and then plug them into a suitable AC wall outlet. It is recommended to use a surge protector for both units.
4.5 Initial Power-On
Press the power button on the front panel of both the AV 20 and AMP 20 to turn them on. Follow the on-screen setup wizard on your display connected to the AV 20 for initial configuration, including network setup, speaker calibration, and input assignments.
5. Operating Instructions
5.1 Front Panel Controls (AV 20)
Figure 5.1: The front panel of the Marantz AV 20 AV preamplifier, featuring input and volume control knobs, a central display, and the power button.
- Power Button: Turns the unit on or off.
- Input Selector: Rotates to select the desired audio/video input source.
- Volume Control: Adjusts the master volume level.
- Display: Shows current input, volume level, and other operational information.
- Headphone Jack: For connecting headphones.
5.2 Front Panel Controls (AMP 20)
Figure 5.2: The front panel of the Marantz AMP 20 power amplifier, featuring a central analog meter, power button, and controls for meter display and sidelight dimming.
- Power Button: Turns the unit on or off.
- Meter On/Off: Toggles the central analog power meter display.
- Dimmer: Adjusts the brightness of the sidelights and meter illumination.
5.3 Remote Control Operation
The supplied remote control for the AV 20 allows for convenient operation of all preamplifier functions, including input selection, volume adjustment, sound mode changes, and menu navigation. Refer to the remote control section of the full user manual for a detailed explanation of each button.
6. Maintenance
- Cleaning: Wipe the unit's exterior with a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents.
- Ventilation: Regularly check that the ventilation openings are not obstructed by dust or debris.
- Power Cord: Periodically inspect the power cord for any damage. If damaged, replace it immediately with an authorized Marantz replacement cord.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected securely; power outlet malfunction. | Ensure power cords are firmly plugged into both units and the wall outlet. Test the outlet with another device. |
| No sound | Incorrect input selected; speaker cables loose; volume too low; mute function active. | Select the correct input on the AV 20. Check all speaker and interconnect cables. Increase volume. Deactivate mute. |
| Distorted sound | Speaker impedance mismatch; damaged cables; source audio quality issues. | Verify speaker impedance matches AMP 20 specifications. Inspect cables for damage. Test with a different audio source. |
| Remote control not working | Batteries depleted; obstruction between remote and unit; incorrect remote mode. | Replace batteries. Remove any obstructions. Ensure remote is in the correct operating mode for the AV 20. |
If the problem persists after attempting these solutions, please contact Marantz customer support or an authorized service center.
8. Specifications
- Model: Marantz AMP 20 (Power Amplifier) and Marantz AV 20 (AV Preamplifier)
- Amplification (AMP 20): 16 Channels
- Power Output (AMP 20): Up to 200W per channel (400W at 4 ohms)
- Amplifier Type (AMP 20): High-efficiency, low-distortion Class D amplification
- Audio Processing (AV 20): Advanced AV Preamplifier with custom Class D and HDAM-SA2
- Construction: Steel and aluminum chassis with elegant finish
- Customization: Configurable channels, bi-amp and bridged modes supported
- Dimensions (Approximate): Refer to the full technical manual for detailed dimensions of each unit.
- Weight (Approximate): Refer to the full technical manual for detailed weight of each unit.
9. Warranty and Support
Marantz products are designed and manufactured to the highest quality standards. This product is covered by a limited warranty. Please refer to the warranty card included in your package or visit the official Marantz website for detailed warranty terms and conditions specific to your region.
For technical support, troubleshooting assistance, or service inquiries, please contact Marantz customer support through their official website or the contact information provided in your product documentation. Ensure you have your model number (AMP20+AV20) and serial number ready when contacting support.
Marantz Official Website: www.marantz.com
