Denon DSW-27 Service Manual

The Denon DSW-27 is a high-performance subwoofer designed to deliver deep, powerful bass for an enhanced audio experience. It features advanced technology for optimal sound reproduction, including a built-in amplifier, adjustable crossover frequency, and phase control. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: High-performance subwoofer, built-in amplifier, adjustable crossover, phase control, RCA inputs.

Installation

Unpack and inspect contents. Place on stable surface.

1. Connect to audio source: Use RCA cables to connect to receiver or amplifier.
2. Position subwoofer: Place in a corner for optimal bass response.
3. Plug into AC power.

WARNING! Subwoofer is heavy; lift with care to avoid injury. Ensure all connections are secure.

First-Time Setup

Power on the subwoofer; adjust settings as needed.

1. Set crossover frequency: Adjust to match your main speakers.
2. Adjust phase control: Experiment for best bass integration.
3. Set volume level: Start at a moderate level and adjust to taste.

CAUTION! Ensure stable surface; use two people for handling.

Specifications

• Power Output: 150 watts RMS.
• Frequency Response: 30 Hz - 150 Hz.
• Input Impedance: 10 kΩ.
• Dimensions: 12 x 12 x 12 inches.
• Weight: 25 lbs.
• Power Source: 120V AC, 60Hz.

Controls and Settings

Access controls on the rear panel: Volume, Crossover, Phase switch.

Remote: Not applicable; manual controls only.

Adjust settings for optimal performance based on room acoustics.

Connecting Devices

RCA inputs for audio source connection.

1. Turn off all devices before connecting.
2. Match cables to ports (e.g., RCA to audio source).
3. Power on devices and adjust settings as needed.

Tip: Ensure subwoofer is off and unplugged before connecting cables.

Playing Audio Media

Supports various audio formats through connected devices.

1. Power on the subwoofer and audio source.
2. Play audio: Adjust volume and crossover settings as needed.
3. Monitor performance: Make adjustments for optimal sound.

WARNING! Do not exceed recommended volume levels to avoid damage.

Accessibility Features

No specific accessibility features; designed for general use.

Care & Cleaning

Unplug before cleaning. Use dry cloth only; no liquids or aerosols.

CAUTION! Do not spray liquids; keep away from heat and moisture.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2026 Denon; trademarks of Denon Electronics.

Troubleshooting

Reset: Unplug for 10 seconds to reset.

Service: Contact Denon support for assistance.