{"product_id":"3w-8-ohm-speaker-compact-audio-output-for-diy-electronics","title":"3W 8 Ohm Speaker – Compact Audio Output for DIY Electronics","description":"\u003ch1\u003e3W 8 Ohm Speaker – Compact Audio Output for DIY Electronics\u003c\/h1\u003e\u003cp\u003eThe 3W 8 Ohm speaker is a small, versatile audio transducer designed for hobbyist electronics, prototyping, and embedded sound projects. It delivers clear audio output at moderate volumes, making it suitable for alerts, music playback, and voice prompts in microcontroller-based builds. Its standard 8 Ohm impedance ensures broad compatibility with common audio amplifiers.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Rating\u003c\/td\u003e\n\u003ctd\u003e3 Watts (RMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpedance\u003c\/td\u003e\n\u003ctd\u003e8 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e50 mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e100 Hz – 15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnet Type\u003c\/td\u003e\n\u003ctd\u003eNeodymium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoice Coil\u003c\/td\u003e\n\u003ctd\u003e13 mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePortable Bluetooth speaker using an amplifier module\u003c\/li\u003e\n\u003cli\u003eArduino-based MP3 player with DFPlayer or similar\u003c\/li\u003e\n\u003cli\u003eCustom doorbell or alarm system with recorded audio\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-pi-5-voice-assistant-kit\"\u003eEmbedded voice assistant with Raspberry Pi and TTS\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eWorks with any microcontroller board that can drive audio through an external amplifier, such as Arduino Uno, ESP32, Raspberry Pi, or dedicated audio modules like DFPlayer Mini. Direct connection to GPIO pins is possible for simple tones, but an amplifier or transistor driver is recommended for full power and quality.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect the speaker terminals to the output of a 3W or lower amplifier module (e.g., PAM8403). If driving from a microcontroller pin, use a 100 µF electrolytic capacitor in series to block DC and protect the coil. Keep wire runs short to minimize interference.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, when used with an external amplifier or a transistor driver. Direct GPIO output may produce weak sound and risk damage.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat voltage is required?\u003c\/summary\u003e\u003cp\u003eThe speaker itself does not have a voltage rating; it's driven by an audio signal. The accompanying amplifier typically needs 3.3V to 5V DC.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use this for a loud alarm?\u003c\/summary\u003e\u003cp\u003eAt 3W, it produces moderate volume suitable for indoor alerts. For louder applications, consider a higher‑power speaker.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445052891501,"sku":"CDN-0871","price":95.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_4f2c52dd-50a3-4d23-b404-f53edf4c7c58.jpg?v=1781513079","url":"https:\/\/compoden.com\/products\/3w-8-ohm-speaker-compact-audio-output-for-diy-electronics","provider":"Compoden","version":"1.0","type":"link"}