These add a Bluetooth module and a battery charging circuit (often with a 5V USB input) to the active design. 🛠Key Schematic Components
Represented by a coil symbol. Common types include Tweeters (highs) and Woofers (lows). shemy muzykalnyh kolonok
These include a power supply , a pre-amplifier , and a power amplifier inside the speaker. These add a Bluetooth module and a battery