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Home ApplicationsRestaurants & Bars CMA2120 CMA2240 Dual-Channel Matrix Mixer Amplifier Solution for Restaurants
Overview Key Highlights Related Product List More Commercial Solutions

CMA2120 CMA2240 Dual-Channel Matrix Mixer Amplifier Solution for Restaurants


I. Solution Overview



Designed for small and medium-sized restaurants of approximately 200–400 m², this solution meets the needs of background music playback and daily paging. Centered on the DSPPA CMA2120 CMA2240 matrix mixer amplifier and complemented by DSPPA audio source player, paging microphones, and ceiling speakers, it provides a complete sound reinforcement system with independent zone control, configurable priority settings, and easy operation.



Lobby Background Music: Provide even sound coverage across approximately 200 m² of open seating, with audio quality suited to background music.

Independent Zone Control: Allow the volume of the approximately 100 m² private dining area to be adjusted independently of the lobby, with local volume control near the entrance.

Front Desk Paging: Enable one-touch paging for order calls and announcements in the lobby, with background music automatically attenuated during paging.

Expandable Paging Stations: Support up to four paging microphones to enable paging from multiple locations, such as the front desk and food preparation area.


II. Common Audio Challenges in Small and Medium-Sized Restaurants


Three Typical Challenges in Restaurant Sound Reinforcement (200–400 m²)


Competing Audio Sources


Background music, order calls, and promotional announcements compete for the same speakers, interrupting one another and affecting the dining experience.


Uneven Sound Coverage


The dining hall, private dining rooms, and corridors have different volume and audio content requirements. Sound may be difficult to hear in distant areas while being too loud nearby, making uniform coverage challenging.


Complex Operation


Restaurant staff and managers are not audio professionals, so complex equipment can be difficult to operate. Paging, zone selection, and volume adjustment may require technical assistance.


Design Goal: One integrated system that delivers three key benefits: independent zone control, configurable audio priorities, and simple operation.


III. Key Advantages of the CM2120 / CMA2240 for Restaurant Applications


Matrix Mixing


Input signals can be freely routed to different output channels, allowing background music in the main dining area, TV audio or music in private dining rooms, and paging from the front desk without interfering with one another.


Reliable Power Output: 2×120W /2×240W


With dual-channel independent outputs, the amplifier supports switchable constant-voltage and constant-impedance outputs, making it suitable for small and medium-sized restaurant systems with 8–16 ceiling speakers.


Priority Control and Remote Paging


MIC1 can be configured with the highest priority, automatically attenuating background music during announcements. A remote volume control interface also allows convenient volume adjustment from a wall-mounted controller.


CMA2120/CMA2240 Key Specifications


Item

Specification

Rated Output Power

2×120W / 2X240W (RMS)

Input Interfaces

5 MIC/LINE + 3 AUX + 1 TEL/EMG

Output Modes

Switchable 100V / 70V / 4Ω

Frequency Response

85Hz–18kHz (100V)

Chassis

1U rack-mount design


IV. CMA2240 Matrix Amplifier Restaurant Solution




No.

Model

Product Name

Quantity

1

CMA2240

Two-Channel Matrix Mixer Amplifier

1 PC

2

CMA20

Remote Paging Station

1 PC

3

CMA01V

Wall Panel with Volume Control

1 PC

4

MAG2107C

1U CD player with USB/FM/Bluetooth

1 PC

5

DSP7052

5" 20W Coaxial Ceiling Speaker

8 PCS

6

DSP6020B

20W Commercial Wall Mount Speaker

8 PCS



Note: This solution is for reference only. Please contact us for specific requirements.


Solution Description:


This system is built around the CMA2240 dual-channel matrix routing amplifier, paired with the MAG2107C digital player for background music and the CMA20 gooseneck paging station for announcements. The lobby and private dining area are driven by two independent output channels, allowing the entire system to work in coordination with the restaurant’s daily operations.

Daily Operation — Automatic Background Music Playback:

The MAG2107C player delivers background music via CD, USB, or Bluetooth. The CMA2240 matrix amplifier routes and mixes the audio, distributing it to both output channels simultaneously. The volume of each zone can be adjusted independently on the amplifier without affecting the other zone.

Private Dining Room Control — Wall-Mounted Panels:

One CMA01V wall-mounted control panel is installed at the entrance to the lobby and another at the entrance to the private dining area. Connected to the amplifier via network cables, the panels allow guests or staff to adjust the local volume and turn background music on or off using a simple rotary control.

Front Desk Paging — One-Touch Announcements with Automatic Music Attenuation:

When staff speak into the front desk CMA20 gooseneck paging microphone, the amplifier’s paging priority function automatically attenuates the background music. Order calls, collection reminders, and waiting notifications can then be heard clearly throughout the relevant areas.

Future Expansion — Flexible Paging and Zone Control:

The CMA2240’s RJ45 bus supports up to four CMA20 paging stations and multiple wall-mounted control panels. Additional paging points can be added by connecting them to the existing bus, reducing the need for new cabling.


V. Core Equipment – CMA2120 Dual-Channel Matrix Mixer Amplifier




CMA2120


The CMA2120/CMA2240 is an all-in-one audio solution that integrates an efficient Class D amplifier and an intelligent matrix mixer in a compact 1U chassis. It supports dual-channel output at 2 × 120W or 2 × 240W, with selectable constant-voltage or constant-impedance operation and a wide range of input interfaces. Its built-in matrix 

mixing function enables flexible audio source routing, independent or combined playback across different zones, and integrated remote paging and volume control. Designed for background music, public address, and multimedia applications, it delivers precise audio management and reliable performance in diverse environments.


Item

Specifications

Output Power

2×120W (independent dual-channel output)

Output Modes

Switchable 100V / 70V constant-voltage and 4Ω constant-impedance

Input Channels

5× balanced MIC/LINE + 3× AUX (RCA) + 1× TEL/EMG

Mixing Architecture

Built-in matrix mixer with flexible input routing to CH1 / CH2

Remote Interfaces

RJ45 bus supporting up to 4 paging stations and multiple wall-mounted control panels

Power Supply

100–240V wide-range input; Class D amplification

Chassis

1U rack-mount chassis; 44 × 430 × 315 mm; net weight: 4.9 kg



VI. Core Equipment – CMA20 Paging Station and CMA01V Wall-Mounted Control Panel



CMA20 Remote Paging Station




CMA01V Wall Panel


CMA20 Paging Station (Supports Up to 4 Units)


RJ45 Bus Connection: Connects to the amplifier via an RJ45 bus for seamless integration with compatible DSPPA equipment.

Multi-Point Paging: One unit can be installed at the front desk and another in the food preparation area. This solution includes two paging stations.

One-Touch Paging: Background music is automatically attenuated during announcements for clear voice transmission.

Flexible Expansion: The system can be expanded to support up to four paging stations as needed.


CMA01V Wall-Mounted Control Panel


Daisy-Chain Connectivity: Supports daisy-chain connections for multiple wall-mounted control panels.

Independent Zone Control: Allows guests or staff to adjust the volume and turn background music on or off in each area independently.

Simple Installation: Connects to the amplifier via an RJ45 bus, simplifying system cabling.


VII. Product Introduction – DSP7052 20W Celling Speaker


Main Dining Area



Discreet Design, Seamless Integration

Appearance: Features a clean, white circular design that blends seamlessly with both modern and classic ceiling styles.

Installation: Flush ceiling-mounted design saves valuable space while maintaining a neat and attractive restaurant interior.


Wide Coverage, Event Sound Distribution

130° Wide Coverage Angle: Each speaker covers a broad area, helping deliver clear, consistent background music throughout the dining space.

Excellent Sound Quality: Equipped with dual tweeters and a 5-inch woofer to reproduce musical details accurately and deliver rich, layered sound.


Reliable Performance for Commercial Applications

100V Constant-Voltage Operation: Supports multiple speakers connected in parallel, making it easy to provide consistent sound reinforcement across large areas and multiple zones.

Durable Construction: Designed for commercial environments, with a robust structure that allows easy installation and maintenance for reliable long-term operation.


VIII. Product Introduction – DSP6020 Wall-Mounted Speaker


Private Dining Room



System Configuration

Professional Audio: The DSP6020 wall-mounted speaker delivers clear sound while blending discreetly into the interior.

Independent Control: A dedicated wall-mounted control panel allows users to adjust the volume or mute the audio with a single touch.


Immersive Audio Experience

Featuring advanced passive radiator technology and carefully matched woofer and tweeter drivers, the DSP6020 delivers high-fidelity sound with rich detail and a well-balanced audio profile.



IX. Application Scenarios



List of Products Related to the Above Projects

200W / 6-Zone

200W 6-Zone Mixer Amplifier, USB & Bluetooth

MA6200U

350W / 6-Zone

350W 6-Zone Mixer Amplifier, USB & Bluetooth

MA6350U

450W / 6-Zone

450W 6-Zone Mixer Amplifier, USB & Bluetooth

MA6450U

Latest Commercial Solutions

CMA2120 CMA2240 Dual-Channel Matrix Mixer Amplifier Solution for Restaurants

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