B2 Audio RIOT-2.5 Mini Woofer 3D-Printed Box, Amp & Enclosure DIY Project

POWERFUL MINI WOOFER PERFORMANCE: The 2.5" B2 Audio RIOT-2.5 loudspeaker delivers 20W RMS / 40W Max with clean mid-bass and crisp highs, featuring a durable aluminum basket and paper cone for pro-grade sound in a small format. BLUETOOTH 5.0 + AUX CONNECTIVITY: Stream wirelessly or connect directly—this 100W+100W 2-channel Class-D amplifier features Bluetooth 5.0 and AUX inputs with treble/bass controls for precise audio tuning. Tinkerers: Perfect for tech tinkerers and builders exploring high-performance mini audio systems. Experiment with Bluetooth amps, subwoofers, and 3D-printed enclosures to create custom sound solutions that push the limits of compact design. DIY Enthusiasts: Ideal for DIY audio enthusiasts who love hands-on projects. Build your own Bluetooth speaker or mini subwoofer setup and experience the thrill of real-world sound design with B2 Audio’s precision-engineered components. Educators: A great choice for educators and STEM programs teaching real-world sound engineering. Engage students with a practical Bluetooth amplifier and subwoofer system that combines 3D printing, electronics, and acoustics for immersive learning. B2 Audio RIOT-2.5 Mini Woofer 3D-Printed Box, Amp & Enclosure DIY Project This Listing Includes: (1) B2 Audio RIOT-2.5 Mini Woofer 2.5" 4 Ohm Loudspeakers 20W RMS Aluminum Basket (1) Single Ported 3D-Printed Subwoofer Enclosure for B2 Audio RIOT-2.5 (1) Daakro ZK-1002T Amplifier: 100W+100W 2.0 Channel Bluetooth 5.0 + AUX Input, Treble/Bass Control, DC 12–24V (1) Custom 3D-Printed B2 Audio Amp Box for ZK-1002T Amplifier Disclaimer: Does NOT come with screws or mounting hardware. This kit brings together everything you need to build a small Bluetooth-powered speaker project using the B2 Audio RIOT 2.5. The RIOT 2.5 is a 2.5" speaker with a subwoofer-inspired design, making it a popular choice for hobbyists building desktop audio systems, demo boxes, and creative DIY setups. It offers more output and presence than the smaller RC2 platform while still keeping the build compact. The included 3D printed enclosure and amplifier case provide a clean foundation for your project, while the ZK-1002T Bluetooth amplifier powers the system. Just add a compatible 12–24V DC power supply and complete the wiring. Specifications: Speaker Woofer Size: 2.5" Power Handling: 20W RMS / 40W Max Impedance: 4 Ohm Voice Coil: 0.8" 4-layer aluminum Basket: Aluminum, black powder-coated Sensitivity: 76.4 dB Resonant Frequency (Fs): 121.6 Hz Mounting Depth: 53 mm Weight: 0.73 lb woofer, approx. 1.13 lb with enclosure Woofer Enclosure Type: Single Ported, 3D-Printed Composite Dimensions: 4.25" x 3.75" x 3.25" Optimized for: B2 Audio RIOT-2.5 Design Benefits: Lightweight structure, efficient airflow, improved bass response, and modern appearance Amplifier Power Amplifier Chip: TPA3116D2 Input Voltage: DC 12V-24V Maximum Power Output: 100W+100W Channel Type: 2.0 Channel Input Methods: Bluetooth 5.0 & AUX Output Impedance: 4-8 ohms THD (Total Harmonic Distortion): 0.40% SNR (Signal-to-Noise Ratio): 75dB Compatible Speakers: Passive speakers, 20-200W, 4-8-Ohm Bluetooth Range: Up to 15m Amplifier Enclosure: 4.08" x 3.2" x 1.30"