The Marantz DP870 is a professional-grade digital audio processor designed for high-end audio applications, featuring advanced digital signal processing, multiple input/output configurations, and comprehensive control options. Below are key sections covering features, installation, operation, specifications, and technical details.
Key components: Digital audio processor, remote control capability, multiple digital/analog inputs, balanced outputs, DSP processing, and network connectivity options.
| Feature | Description |
|---|---|
| Digital Inputs | AES/EBU, S/PDIF, Toslink optical |
| Analog Inputs | XLR balanced, RCA unbalanced |
| Outputs | XLR balanced analog, digital outputs |
| Processing | 24-bit/192kHz DAC, DSP algorithms |
| Control | RS-232, Ethernet, IR remote |
| Power Supply | Internal switching power supply |
| Display | LED status indicators |
| Sample Rates | 32kHz to 192kHz supported |
| Filters | Selectable digital filters |
| Setup Memory | Multiple configuration presets |
Unpack and inspect all components. Place unit in well-ventilated area.
WARNING! Ensure proper ventilation; do not block cooling vents. Use certified cables for optimal performance.
Power on unit; configure basic settings via front panel or remote.
CAUTION! Allow unit to reach room temperature before operation. Handle with care during setup.
Front panel: Power switch, input selection, menu navigation, display. Remote control: All front panel functions plus additional presets.
Menu System: Input configuration, output settings, DSP parameters, system setup. Navigation via rotary encoder and function buttons.
Input Settings: Source selection, format detection, sample rate display. Output Settings: Level adjustment, polarity, mute functions. System: Firmware version, factory reset, network configuration.
Digital sources: Connect via AES/EBU, S/PDIF, or Toslink. Analog sources: Use XLR or RCA inputs. Outputs: Connect to amplifiers or recorders.
Tip: Use balanced connections for long cable runs to minimize noise.
Supports various operational configurations for different applications.
WARNING! Do not operate with covers removed. Allow proper warm-up time for optimal performance.
Digital filter selection: Choose from multiple filter types for different sonic characteristics. Level calibration: Fine-tune output levels for system matching. Delay settings: Apply digital delays for time alignment.
Keep unit clean and dust-free. Use soft, dry cloth for exterior cleaning. Ensure adequate ventilation around unit.
CAUTION! No user-serviceable parts inside. Refer servicing to qualified personnel only.
CE compliant: Meets European safety and EMC standards. FCC Part 15: Class A digital device. RoHS compliant: Free of hazardous substances. For technical support, contact Marantz professional audio division or visit www.marantzpro.com.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No audio output | Input selection/muting | Check input source; verify mute status; inspect cables |
| Digital lock issues | Sample rate mismatch | Verify source sample rate; check cable quality |
| Noise in output | Ground loops/cables | Use balanced connections; check grounding |
| Remote control not working | Batteries/obstructions | Replace batteries; ensure line of sight to IR sensor |
| Unit not powering on | Power supply/issues | Check power cable; verify outlet function |
Reset Procedure: Hold setup button during power-on for factory reset.
Service Information: Contact authorized Marantz service center for repairs.