{"product_id":"bluetooth-diy-speaker-kit-3w-amplifier-led-spectrum-remote","title":"Bluetooth DIY Speaker Kit 3W+3W LED Spectrum Amplifier \u0026 Remote","description":"\n\u003ch2\u003eBuild Your Own Bluetooth Speaker – DIY Electronic Kit with LED Spectrum Display\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eLOTHYE Bluetooth Mini Speaker Making Kit\u003c\/strong\u003e is the perfect hands-on project for electronics enthusiasts, hobbyists, students, and makers. Assemble a fully functional stereo Bluetooth speaker from scratch — complete with a dual-channel 3W+3W amplifier, voice-activated LED spectrum display, USB music playback, and a remote control. The Bluetooth circuit board comes pre-soldered, so you simply wire it up and assemble the sound control board to complete the build.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠️ Please Note:\u003c\/strong\u003e This is a DIY assembly kit intended for buyers with circuit-building experience. All parts require self-installation. The seller guarantees parts are in good condition upon delivery but cannot guarantee 100% success post-assembly. Please read all instructions carefully before purchasing.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Channel Stereo Output:\u003c\/strong\u003e 3W + 3W (6W total) for clear, full-bodied sound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth Connectivity:\u003c\/strong\u003e Pair wirelessly with your smartphone — scan for \"XCO46\" and connect instantly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoice-Activated LED Spectrum:\u003c\/strong\u003e LEDs pulse and flow in sync with the music — the louder the sound, the brighter and faster the light display\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB \/ U-Disk Playback:\u003c\/strong\u003e Plug in a USB drive to play music directly; automatically switches from Bluetooth to USB when disconnected\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower-Off Memory:\u003c\/strong\u003e Remembers your last playback state after power is cut\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemote Control Included:\u003c\/strong\u003e Conveniently manage playback without touching the unit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Power Supply:\u003c\/strong\u003e Powered via USB (DC 4.2–5V); compatible with phone chargers, power banks, or a 5V computer USB port\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePre-Soldered Circuit Board:\u003c\/strong\u003e The Bluetooth board arrives ready — just connect the wires and assemble\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransparent Shell:\u003c\/strong\u003e Peel the protective film to reveal a sleek, see-through acrylic enclosure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmplifier Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e106 × 66 × 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 (Stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3W + 3W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 4.2V – 5V (do NOT exceed 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5A – 2A (2A recommended for best audio quality)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Sources\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBluetooth, USB \/ U-Disk\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB power cable, pre-soldered Bluetooth PCB, all kit components, remote control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThe voice-activated LED display circuit consists of a power supply circuit, a microphone amplifier circuit, and an LED light-emitting indicator circuit. The MIC captures the audio signal, converts it to an electrical signal, amplifies it, and drives the LEDs — creating a dynamic, music-reactive light show that pulses with every beat.\u003c\/p\u003e\n\n\u003ch3\u003eWiring Guide (Quick Reference)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhite terminal:\u003c\/strong\u003e Connect to the speaker\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRed terminal:\u003c\/strong\u003e Connect to the power supply\u003c\/li\u003e\n  \u003cli\u003eAlways follow the included product instructions strictly — incorrect wiring may prevent the amplifier from functioning correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/18-pc-basswood-carving-blocks-whittling-wood-kit\"\u003e18 Pc Basswood Carving Blocks – Whittling Wood Kit for Carvers\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the Bluetooth speaker kit come pre-assembled or does it require full DIY assembly?\u003c\/h4\u003e\n\u003cp\u003eA: The Bluetooth circuit board arrives pre-soldered for your convenience. You will need to connect the wiring and assemble the sound control board yourself. A USB power cable and all required components are included in the kit. Basic circuit-building experience is recommended before starting assembly.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What power sources are compatible with this DIY Bluetooth amplifier kit?\u003c\/h4\u003e\n\u003cp\u003eA: The kit operates on DC 4.2V–5V. It is compatible with standard 5V USB phone chargers, power banks (charging treasures), and 5V computer USB ports. For the best audio output, use a power supply rated at 2A. Do not exceed 5V, as this may damage the module.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I play music from a USB drive if my phone's Bluetooth is disconnected?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The kit supports both Bluetooth and U-Disk (USB drive) playback. When Bluetooth is disconnected, the unit automatically switches to USB playback mode. It also features power-off memory, so it recalls your last playback state when powered back on.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does the voice-activated LED spectrum display do?\u003c\/h4\u003e\n\u003cp\u003eA: The LED spectrum display reacts dynamically to sound in real time. The louder the audio, the brighter and faster the LEDs illuminate — creating a visually engaging, music-synchronized light show that makes the speaker as fun to watch as it is to listen to.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the Bluetooth speaker kit come pre-assembled or does it require full DIY assembly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Bluetooth circuit board arrives pre-soldered for your convenience. You will need to connect the wiring and assemble the sound control board yourself. 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