A Distributed Audio System is a widely used solution for buildings, auditoriums, offices, restaurants, and hospitals, any environment that requires clear, consistent, and even sound coverage across a large area.
In this guide, Hoàng Bảo Khoa walks you through the essential principles of distributed audio design, including ceiling-speaker placement, speaker density, SPL management, coverage optimization, and techniques for reducing unwanted reflections to achieve a clean and intelligible sound field.
1. Understanding Distributed Audio
Distributed Audio refers to the use of multiple small speakers installed evenly throughout a space, instead of relying on a few large high-power units. This approach ensures consistent sound levels across the area, minimizing “hotspots” (overly loud zones) and “dead zones” (areas lacking coverage).
Common speaker types: ceiling speakers, wall-mounted speakers, or compact cabinet speakers depending on the application.
2. Principles of Distributed Speaker Layout
- Speaker density: spacing between speakers should ensure uniform coverage, typically 2–5 m for ceilings 2.5–3 m high.
- Ceiling height: affects required SPL and determines speaker power and coverage angle.
- Speaker placement: avoid positioning speakers too close to walls or reflective surfaces to reduce echo and early reflections.
- Ensure proper impedance and power configuration (70V / 100V line for professional distributed systems).
3. Key Technical Specifications
- SPL (Sound Pressure Level): defines the average volume at the listening position; select speakers with suitable power to cover the area evenly.
- Coverage Angle: determines how wide the sound spreads and directly affects the number of speakers required.
- Impedance / Line Voltage: 8& OMEGA;, 70V, or 100V depending on the system; line-voltage systems are ideal for large installations, allowing multiple speakers with minimal signal loss.
- Frequency Response: indicates tonal accuracy; distributed systems benefit from flat or near-flat frequency response for clear and natural sound.
4. How to Choose Distributed Speakers
- Define your audio objectives: auditoriums, buildings, offices, restaurants, and more.
- Select power output, SPL, and coverage based on room size and ceiling height.
- Choose high-quality ceiling speakers or wall-mounted speakers that are durable and easy to maintain.
- Prioritize speakers with tap settings to easily balance volume across different zones.
5. Technical Recommendations
- Test speaker placement using simulation tools or coverage measurement software to optimize the number and locations of speakers.
- Match speakers with amplifiers, mixers, and DSP units using correct impedance to prevent overload or signal loss.
- Avoid placing speakers near obstructions, close to ceilings, or in strongly reflective areas to minimize unwanted reverberation.
6. Buy Genuine Distributed Speakers at Hoàng Bảo Khoa
Hoàng Bảo Khoa supplies genuine distributed audio solutions (ceiling speakers, wall-mount speakers) with full technical support, certified warranty, and optimized system design consultation. All products are 100% authentic, include CO/CQ documentation, and are eligible for 48-hour replacement for manufacturer defects, with nationwide delivery.