The CT14 Micro 4.2 Stereo Bluetooth Amplifier Module is the go-to solution for "upcycling" old speakers. At Electrapac, we recommend this module for users who want to turn their idle wired speakers into high-performance wireless sound systems with zero hassle.

Product Overview

The CT14 is a highly efficient, dual-channel Bluetooth 4.2 power amplifier. It is specifically designed for DIY enthusiasts who want to "refit" or "breathe new life" into old sound boxes. It features an integrated Micro-USB charging port, allowing you to charge an attached lithium battery while the speaker is in use or idle.

Key Features for Electrapac Customers

• Integrated Charging Circuit: Features a built-in charging management system. You can connect a 3.7V Lithium battery directly to the board and charge it via the Micro-USB port—no separate charging module needed!

• Lossless Stereo Sound: Equipped with high-quality Bluetooth chips that ensure a clean, hiss-free audio signal with a wireless range of up to 15 meters.

• Ultra-Compact Design: Its tiny footprint allows it to be tucked inside even the smallest speaker enclosures or plastic housings.

• Low Heat Class D Amp: Uses Class D digital amplification technology, which stays cool even at high volume, extending the life of your battery and components.

• Automatic Re-connection: Once paired, the CT14 will automatically find and connect to your last-used device as soon as it is powered on.

Refitting & Wiring Guide

Transforming your "idle sound box" is easy with components from www.electrapac.com:

1. Speaker Setup: Solder your Left and Right speakers to the L+/L- and R+/R- pads. For the best sound quality, use 4-ohm 5W speakers.

2. Battery Power: Connect a 3.7V Li-ion battery (like an 18650) to the VBAT pads. The board is designed to handle the charging and discharging of the battery safely.

3. USB Power: You can also run the board directly from a 5V USB power bank or phone charger if no battery is attached.

4. Pairing: Turn on your phone's Bluetooth and look for "CT14". Once connected, your old speaker is now a modern wireless sound system!

Ideal For:

• Refitting Idle Speakers: Convert those old computer speakers or bookshelf speakers into a Bluetooth unit.

• Portable Boomboxes: Perfect for building a custom, battery-powered outdoor speaker.

• Desktop Audio: Create a sleek, wireless audio setup for your workspace.

• Unique DIY Gifts: Build a Bluetooth speaker inside a vintage box or a 3D-printed case.

Why Shop at Electrapac?

We source the CT14 with high-grade copper soldering pads and verified Bluetooth 4.2 chips for the most reliable connection. Visit www.electrapac.com to find this module, matching speakers, and high-capacity 18650 batteries.