CT14 Bluetooth 4.2 Mini Stereo Audio Power Amplifier Board Module
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৳ 160.00৳ 200.00 (-20%)
This CT14 Bluetooth 4.2 mini stereo power amplifier board is a high-performance, ultra-compact audio module designed for DIY wireless speaker projects. It features an integrated Bluetooth receiver alongside an onboard dual-channel amplifier delivering 5W+5W stereo output, making it ideal for driving small 2Ω–8Ω speakers. The board is powered conveniently via a 5V Micro-USB port or a 3.7V lithium battery connection. With its built-in PCB trace antenna for stable wireless transmission and pre-configured SMD components, this lightweight module offers a plug-and-play solution for modifying old speakers, building portable sound systems, and creating custom wireless audio applications.
CT14 Bluetooth 4.2 Mini Stereo Audio Power Amplifier Board Module
Product Overview
The CT14 (DW-CT14+) Bluetooth Mini Stereo Amplifier Board is an ultra-compact, high-performance wireless audio module engineered specifically for DIY speaker conversions, portable sound systems, and custom audio installations. This all-in-one circuit board integrates a Bluetooth 4.2 audio receiver, a dual-channel digital power amplifier, and a lithium battery charging circuit onto a single miniature red PCB footprint. It provides a simple plug-and-play solution to turn any standard wired speaker pair into a modern wireless sound system.
Key Features
- Bluetooth 4.2 Wireless Audio: Features an integrated JL (Jieli) AS20BP03307 main control chip alongside a 24.000 MHz crystal oscillator to deliver clear audio decoding and stable wireless streaming with zero signal dropouts.
- Dual-Channel Stereo Output: Embedded dual SMD audio amplifier chips deliver 5W + 5W continuous stereo power output, providing rich audio dynamics for compact setups.
- Onboard Trace Antenna: Features a built-in meandering PCB copper trace antenna on a dedicated yellow isolation zone, eliminating the need for bulky external antennas.
- Flexible Power Inputs: Can be powered via the onboard Micro-USB 5V input port or directly wired to a 3.7V Lithium-ion/Li-Po battery pack.
- Speaker Compatibility: Broad output matching allows the module to safely drive small, high-efficiency 2Ω to 8Ω full-range desktop or portable speakers.
- Premium SMT Construction: Fully machine-assembled with high-speed surface mount technology (SMT), featuring onboard SS24 Schottky rectifier diodes and micro smoothing capacitors for ultra-low noise interference.
Technical Specifications
- Model Number: CT14 / DW-CT14+
- Bluetooth Version: Bluetooth 4.2 (Backwards compatible with older versions)
- Output Power: 5W + 5W (Dual Channel Stereo)
- Working Input Voltage: DC 3.7V – 5.0V
- Power Interface: Micro-USB Female Socket or Solder Pads
- Recommended Speaker Impedance: 2-Ohm, 4-Ohm, or 8-Ohm
- Transmission Range: Up to 15 meters (Open space)
Ideal Applications
- Upgrading legacy wired computer speakers or bookshelf speakers to Bluetooth.
- Building custom DIY portable boomboxes and wireless Bluetooth speaker tubes.
- Integrating wireless audio receivers into motorcycle helmets, smart mirrors, or electronic toys.
- Engineering prototyping, lab testing, and custom acoustic speaker design projects.
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