ARCAM Radia R25B 10-inch Active Subwoofer (Single)

A powered 10-inch subwoofer designed to give Radia music and home-cinema systems controlled low-frequency extension. ARCAM currently marks this model as coming soon.

Why choose the ARCAM Radia R25B?

For cinema LFE effects or supporting compact stereo speakers with low-bass weight. As the manufacturer marks this model as coming soon, please ask Kronos AV to confirm delivery timing.

Key specifications

• 250mm (10-inch) coated fibre-composite driver in aluminium cast frame
• 750W RMS / 1500W peak Class D amplification
• 26Hz–150Hz frequency response (±6dB)
• Variable crossover (50–150Hz), level and phase controls
• RCA LFE/line input and 3.5mm 12V trigger
• Rear-ported bass-reflex cabinet in Black Natural Walnut finish

Technical Specifications – ARCAM R25B

Specification details from the ARCAM Radia October 2026 dealer price list. Some advanced electrical measurements are not provided in that document; consult the latest ARCAM product sheet before installation.

What can an active subwoofer add?

The R25B combines a 250mm coated fibre-composite bass driver with a 750W built-in digital amplifier. It is intended to reproduce low frequencies that smaller main speakers may not cover and to support cinema low-frequency effects.

ARCAM R25B – Frequently Asked Questions

How should I integrate it?

Subwoofer performance depends strongly on the room, crossover selection, level and phase. Start with the amplifier or AV processor's recommended bass-management settings, then refine them after positioning and listening.

Do I need an extra power amplifier?

No. The R25B includes its own amplification but requires an appropriate audio signal and mains power.

Our Advice at Kronos AV

Our advice

Speak to our team for help with room placement, system compatibility and the right equipment for your listening priorities.