SOTAMIA 1Pcs 2 Inch Subwoofer Passive 4 Ohm 15W Diaphragm Glass Fiber Waterproof Sound Cavity Box Speaker DIY Audio

This small speaker is a passive speaker (it does not contain a power amplifier) and is not a Bluetooth speaker. It cannot be directly connected to a power supply. It needs to be driven by an external power amplifier. There are two CD pattern diaphragm models in black and silver. The bass and vocals are better. Choose according to your own needs. This product is a 2-inch subwoofer passive small speaker, also known as a sound cavity speaker [non-sound, cannot be used directly, requires a suitable power amplifier driver to be used], the sound cavity has a built-in 2-inch 4 ohm 15W glass fiber basin high-power strong magnetic speaker unit, the sound cavity comes with a bracket that can be installed and fixed without opening holes and screws, and a passive small speaker with a diaphragm radiator at the bottom. It is recommended to use a 10-15W power amplifier to drive, with a voltage of 5-12v. If you use a high-power amplifier, such as 30W-50W, or a higher-power power amplifier, be sure to properly control the volume at about 45% to avoid overload and noise. A long time will shorten the life of the speaker, the speaker sound film is damaged, there is noise in the broken sound and even burn the speaker. If you don't understand, please shoot carefully! Packaging： 1Pcs