Denon PRA-1200 Service Manual

The Denon PRA-1200 is a high-performance preamplifier designed for audiophiles seeking superior sound quality and versatility. It features multiple input options, including phono, line, and digital inputs, allowing seamless integration with various audio sources. The unit is equipped with advanced circuitry to minimize noise and distortion, ensuring a clean and dynamic audio output. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operating the Preamplifier 8. Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: High-quality phono stage, multiple line inputs, remote control, tone control, and headphone output.

Feature	Description
Phono Input	For connecting turntables with MM/MC cartridges
Line Inputs	Multiple inputs for various audio sources
Remote Control	Convenient control from a distance
Tone Control	Adjust bass and treble settings
Headphone Output	For private listening
Power Supply	High-quality power supply for optimal performance

Installation

Unpack and inspect the contents. Place the preamplifier on a stable surface.

Connect audio sources: Use appropriate cables for phono and line inputs.
Connect to amplifier: Use RCA cables to connect to the power amplifier.
Plug into AC power.

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

Power on the preamplifier; follow the setup instructions.

Select input source using the remote control.
Adjust tone settings as desired.
Test with various audio sources to ensure proper functionality.

CAUTION! Ensure stable surface; avoid placing heavy objects on top.

Specifications

Frequency Response: 20 Hz - 20 kHz.
Input Impedance: 47 kΩ (phono).
Output Impedance: 600 Ω.
Signal-to-Noise Ratio: 100 dB.
Power Consumption: 30W.
Dimensions: 17.1 x 14.2 x 4.1 inches.
Weight: 10.5 lbs.

Controls and Settings

Access settings via the front panel or remote control. Key controls include input selection, volume, and tone adjustments.

Remote: Input selection, volume control, mute, and tone adjustment.

Connecting Devices

Connect various audio sources using the appropriate inputs.

Turn off all devices before connecting.
Match cables to ports (e.g., RCA to line inputs).
Select input via remote control.

Tip: Ensure all connections are secure to avoid signal loss.

Operating the Preamplifier

Use the remote control or front panel to operate the preamplifier.

Power on the unit.
Select the desired input source.
Adjust volume and tone settings as needed.

WARNING! Avoid sudden volume changes to protect speakers.

Maintenance

Regularly clean the unit with a soft, dry cloth. Avoid using liquids.

CAUTION! Do not expose the unit to moisture.

Regulatory Information

This device complies with FCC Part 15 regulations. For support, visit www.denon.com or contact customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Incorrect connections	Check all connections and settings.
Distorted sound	Overdriven input	Reduce volume and check input levels.
Remote not working	Battery issue	Replace batteries in the remote control.
Noise in audio	Grounding issue	Check grounding of all connected devices.

Service: For further assistance, contact Denon support.