B2 Audio RIOT 2.5 Mini Woofer 2.5" 4 Ohm Loudspeaker 20W RMS Aluminum Basket

• Compact Yet Powerful – Delivers 20W RMS and 40W max in a 2.5" frame, ideal for tight installs and custom audio projects.
• Durable Aluminum Basket – Lightweight black powder-coated basket provides structural integrity and heat resistance.
• Precision Sound – Paper cone with ROAM surround and 4-layer aluminum voice coil for crisp, responsive mids.
• Strong Magnet Structure – Dual 3oz ferrite magnets (50x26x6mm) ensure controlled motor force and reliability.
• Easy Fit & Clean Design – 53mm mounting depth, 70mm OD, giftbox packaging, and pro-level performance for DIY or custom installs.

B2 Audio RIOT 2.5 Mini Woofer 2.5" 4 Ohm Loudspeaker 20W RMS Aluminum Basket

• (1) B2 Audio RIOT 2.5 Mini Woofer 2.5" 4 Ohm Loudspeaker 20W RMS Aluminum Basket

The RIOT 2.5 Mini Woofer is a compact, high-performance 2.5-inch loudspeaker engineered for clean, punchy sound in tight spaces. It features a black powder-coated aluminum basket and a responsive paper cone for excellent tonal clarity and midrange focus.

Built with a 4-layer aluminum bobbin voice coil and 10mm winding width, this woofer handles 20 watts RMS and peaks at 40 watts max. The ROAM surround and precision 3oz dual ferrite magnet motor deliver controlled movement and stable output, while the lightweight PP dust cap enhances accuracy.

With a sensitivity of 76.4 dB and a resonance frequency (Fs) of 121.6 Hz, the RIOT 2.5 is tuned for articulate performance in both sealed and vented enclosures. Its shallow 53mm mounting depth and 70mm OD make it ideal for stealth installs, motorcycles, custom panels, and compact audio systems.

Whether you're crafting a custom Bluetooth speaker, upgrading a small soundbar, or assembling your own mini desktop system, the B2 Audio RIOT 2.5 Mini Woofer delivers big sound in a small package. Its compact design and precision-engineered components make it the ultimate choice for hobbyists, makers, and audio enthusiasts who want professional-grade performance in their creative builds.

Key Specs:

• 2.5" Paper Cone, 4 Ohm Impedance


• 20W RMS / 40W Max Power


• Aluminum Basket, Dual Ferrite Magnets


• 0.8" Voice Coil, 4-layer Design


• Sensitivity: 76.4 dB, Fs: 121.6 Hz


• Mount Depth: 53mm

Dimensions:

• Length: 2.5"


• Width:   2.5"


• Height:  2.5"


• Weight: 0.73 lb

Take your DIY experience to the next level with the RIOT-2.5 mini woofer!

It’s not just an accessory it’s an audio upgrade that lives up to the B2 Audio spirit in every way.