Professional Illustrated Tutorial: DIY Ferrofluid Speaker Made with PVC Pipe

This DIY project is reproduced based on the shared content from Douyin. We use standard 12 cm PVC pipe as the main enclosure to build a dual-channel portable speaker that combines audio playback and dynamic ferrofluid visual effects.

This device integrates multiple functions: Bluetooth audio streaming, independent adjustment for volume, treble and bass, separate on/off control for the ferrofluid system, and DC charging. It adopts a pair of 3-inch full-range drivers paired with passive radiators to enhance low-frequency performance. PVC partition boards are installed inside to physically isolate the left and right channels and reduce crosstalk.

The ferrofluid unit and LED strips are powered by an independent 12V circuit with a step-down module. A reflector is used to amplify the visual effect. The entire PVC enclosure is painted and coated for better appearance and durability.

The speaker features two separate internal chambers. An audio filter component is placed inside the left chamber, while the 12V step-down module is installed in the right chamber. A built-in carry handle makes the speaker portable. This design balances sound quality, practicality and creative visual experience.

Target Users: DIY audio enthusiasts, creative electronics makers and ferrofluid device hobbyists. Key Features: Low-cost PVC enclosure, dual-chamber acoustic isolation, dual independent power supplies for audio and visual systems, integrated control panel, and passive radiators for boosted bass.

Below are video tutorials and graphic tutorials. Please watch them carefully

more………………………………