Red Board Relay Board – Best 2.1 Channel 200W Amplifier

Red Board Relay Board 2.1 Channel Amplifier for DIY Audio

The red board relay board is a high-power 2.1-channel amplifier board designed for DIY audio systems, custom speaker builds and juakali amplifier projects. It provides a rated output of up to 200W and operates from a 24V DC power supply, making it suitable for building custom audio systems where a dedicated amplifier board is required.

The board uses a 2.1-channel configuration, providing left and right speaker channels together with a dedicated subwoofer channel. This arrangement makes it suitable for stereo speaker systems with additional bass output.

A built-in speaker protection relay is included on the board to help manage the connection between the amplifier output and connected speakers during operation. Speaker protection is an important consideration in amplifier design, with dedicated protection systems commonly used in audio amplifier circuits.

Key Features

2.1 Channel Audio Configuration

The red board relay board is designed for a 2.1-channel audio setup. This configuration combines two main stereo channels with a dedicated subwoofer channel.

The left and right channels can be connected to the main speakers, while the subwoofer channel is designed for the bass section of the system. This makes the board useful when building a custom speaker enclosure or upgrading a DIY audio system.

200W Rated Output

The amplifier board is specified with a rated output of up to 200W. This rating is the more useful figure to consider when assessing the board’s intended amplifier output.

The board also carries a claimed 2500W PMPO rating. PMPO is a peak-power marketing figure rather than the same type of continuous or rated output specification, so the 200W rated output should be used when comparing the practical power capability of the amplifier.

Built-In Speaker Protection Relay

One of the key features of this red board relay board is its built-in speaker protection relay.

The relay helps control when the speakers are connected to the amplifier output and is designed as part of the board’s speaker protection arrangement. Protection circuits are commonly incorporated into audio amplifier designs to help protect speakers and amplifier output stages from potentially damaging conditions.

24V DC Power Supply

The amplifier board operates from a 24V DC power input. A suitable power supply should be used according to the board’s requirements and the complete amplifier system being built.

Always check the board’s power connections and polarity before applying power.

Ideal for DIY & Juakali Amplifier Builds

The red board relay board is particularly suited to users building or repairing custom audio equipment. It can be incorporated into custom speaker cabinets, DIY amplifiers and other projects where a 2.1-channel amplifier board is required.

Common applications include:

• Juakali amplifier builds
• DIY home audio systems
• Custom speaker enclosures
• 2.1-channel speaker systems
• Audio amplifier projects
• Electronics learning projects
• Custom sound-system builds
• Speaker system upgrades

For more components and equipment for electronics projects, explore our Electronics & Accessories category.

Technical Specifications

Package Includes

Build a Custom 2.1 Channel Audio System

The red board relay board provides a practical foundation for DIY audio projects requiring a 2.1-channel amplifier configuration. With up to 200W rated output, 24V DC operation and a built-in speaker protection relay, it is suited to custom amplifier builds, speaker enclosures and juakali audio projects.

Its combination of stereo left and right channels with a dedicated subwoofer channel makes it a useful choice for builders looking to create a more complete 2.1-channel sound system.

The amplifier board is designed for custom audio applications where output power and speaker protection are important considerations. For additional technical information on audio amplifier technologies and speaker protection, see Texas Instruments’ audio amplifier resources.