Monitor Audio Radius 3 4G Mini Monitor Speakers

Radius 3 is a high-performance mini-monitor delivering precise, high-fidelity sound for TV, film, music, gaming and multi-room applications, including discreet commercial installations. Featuring a 4.5-inch C-CAM driver with RST III geometry and a 25mm C-CAM Gold Dome tweeter, each powered by its own optimised motor system, it combines impressive sonic performance with exceptional versatility, supporting desktop, floor-stand or wall-mount installation.

Key Features

• 2-Way design
• Recommended power amp between 40 & 75 Watts
• Ported Bass Design
• Gold Dome C-Cam tweeter
• Finishes available: Satin White, Gloss Black
• Optional Wall mount and floor stands are available

Design-led Compact Performance.

A focussed three-product, compact, design-focused speaker range engineered to blend seamlessly into contemporary interiors while maintaining high-performance audio.

Big Sound, Minimal Footprint

Utilises advanced driver technology to deliver clear, detailed sound with surprising scale from ultra-small enclosures, building on the series’ legacy of high-fidelity performance.

Scalable for Any Space

Highly versatile system architecture, enabling everything from discreet stereo setups to full multi-channel home cinema configurations with matching subwoofers.

C-CAM Gold Dome Tweeter

Complementing the all-new C-CAM RST III Bass/Mid driver, Radius 4G features Monitor Audio’s refined, fully vented C-CAM Gold Dome Tweeter with an optimised UD Waveguide. Now engineered with an external magnet system and a vented former, the design achieves true full venting, eliminating resonance paths from both the dome and surround.

The Tweeter, formed from a single piece of Ceramic-Coated Aluminium/Magnesium, delivers exceptional rigidity, low distortion, and a fast, precise high-frequency response with outstanding clarity and openness. The UD Waveguide ensures smooth, extended highs, controlled dispersion, and seamless integration with the RST III driver, resulting in remarkable clarity, punch, and immersive high-fidelity performance in a compact form, while the gold dome remains a hallmark of Monitor Audio’s metal- driver expertise.

HiVe II Port Technology

The refined HiVe II ports on Radius 4G are engineered to deliver cleaner, faster airflow, reducing turbulence and minimising unwanted chuffing. On the all-new Radius 3 models, the ports have been enlarged by 50% compared to the previous generation, further enhancing smooth airflow and delivering tighter, more controlled bass performance.

RST III driver & Motor System

The all-new RST III C-CAM cone and motor system in the Radius 4G represents a significant evolution in Monitor Audio’s metal cone and driver technology. The bass/mid drivers have undergone full FEA optimisation, improving driver surround, spider and chassis design to reduce breakup and reduce resonances.
Larger magnets, improved voice coil, and enhanced venting, it delivers greater control, reduced distortion and improved dynamic range. Complementing this is the new C-CAM Gold Dome Tweeter with an optimised UD Waveguide, ensuring smooth, extended high frequencies, precise dispersion, and seamless integration with the RST
III driver. The result is a speaker that offers remarkable clarity, punch, and immersive high-fidelity performance in a compact, versatile form.