Monitor Audio Radius 3 (4G) Bookshelf Speakers

The Monitor Audio Radius 3 (4G) represents a refined evolution in compact speaker design, delivering sophisticated audio performance for discerning listeners.

These bookshelf speakers combine elegant aesthetics with acoustic engineering, making them ideal for music enthusiasts seeking quality sound in smaller spaces. Engineered with Monitor Audio's proven driver technology, the Radius 3 (4G) produces balanced, detailed sound across a wide frequency range. The compact form factor fits seamlessly into living rooms, studies, or bedrooms without compromising sonic integrity. Whether you're enjoying vinyl, streaming, or home cinema, these speakers provide the clarity and warmth that characterises quality audio reproduction.

Perfect for those who refuse to compromise on sound quality despite space constraints, the Monitor Audio Radius 3 (4G) bookshelf speakers offer genuine hi-fi performance in a beautifully proportioned package.

The Radius 3 4G mini-monitor delivers precise hi-fi sound for TV, music and gaming with flexible wall or stand mounting.

Radius 3 4G 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 25 mm 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.

Design-Led Compact Performance

A high-performance mini-monitor of remarkable versatility, the Radius 3 4G delivers precise, high-fidelity sound across TV, film, music, gaming and multi-room applications, equally at home in discreet residential or commercial installations.

Its 4.5-inch C-CAM RST III bass/mid driver, paired with a 25 mm C-CAM Gold Dome Tweeter, each powered by its own optimised motor system, produces expansive, detailed sound far beyond what its compact dimensions suggest. Through-bolt driver bracing, HiVe II port technology and a precision-engineered crossover work in unison to deliver tight bass, controlled dispersion and exceptional clarity throughout the frequency range.

Flexible mounting options – a wall, desktop or floor stand- make integration effortless in any environment. Pair with a Monitor Audio subwoofer to unlock truly full-range performance.

Tuned for True High-Fidelity

Radius Series 4G delivers genuine hi-fi and cinematic AV performance, beautifully engineered for modern installation and contemporary living spaces. Radius Series 4G combines advanced acoustic engineering, premium materials and discreet industrial design to create scalable stereo and immersive AV systems without compromise.

Big Sound, Minimal Footprint

Designed to integrate effortlessly into contemporary living or commercial spaces, Radius 4G offers a level of flexibility rarely found in high-fidelity loudspeaker systems. Whether configured as a compact stereo pair, a discreet home cinema installation, a desktop listening solution or part of a wider multi-room environment, Radius 4G delivers immersive, room-filling sound with remarkable clarity and precision.

Radius Has Never Been More Adaptable.

Radius Series 4G is engineered to perform beautifully across an exceptional range of applications. Whether you want to upgrade your stereo system for your living space, create a surround-sound cinema system, or find a refined alternative to a soundbar for your TV, Radius 4G will deliver a wide soundstage and lifelike dialogue clarity in every environment.

Designed for Flexible Installation

Whether placed on a desktop, mounted discreetly on a wall or integrated into a full stereo or AV system, each accessory has been carefully developed to complement the Radius range both visually and functionally.

Features at a glance:

• 1 x 4.5-inch C-CAM Driver
• RST II Cone
• RST III Bass Driver
• 25 mm C-CAM Gold Dome Tweeter
• New Crossover Design
• Through-bolt Driver Bracing
• HiVe II Ports
• Finishes in Satin White & High Gloss Black

Optional Add On:

Monitor Audio Radius Floor Stand (4G) Speaker Stands

The Radius Floor Stand 4G combines style with stability. Its wooden tripod legs provide a modern, contemporary aesthetic while offering a secure and sturdy base. The Radius 1 4G or Radius 3 4G attaches easily with a single bolt, and speaker cables can be neatly routed from the terminals down through the stand, exiting at the base for a clean, uncluttered appearance.

Monitor Audio Radius Desk Pad (4G) Isolation Platforms

The Radius Desk Pad 4G, designed for the Radius 1 4G and Radius 3 4G, provides a stable, secure platform for desktop placement of either speaker. Crafted from precision-engineered rubber with specific hardness for effective vibration isolation, it minimises unwanted resonance while enhancing clarity. The Desk Pad also offers a subtle upward tilt, angling the speakers for optimal sonic performance in desktop environments.

Specifications

• System Format: 2-Way
• Frequency Response, In-Room (-6dB): 44 Hz — 35 kHz
• Sensitivity (2.83 Vrms @ 1m, Free-Field): 84 dB
• Nominal Impedance: 8 Ohms
• Minimum Impedance (20 Hz to 20 kHz): 4 Ohms @ 250 Hz
• Maximum Peak SPL (AES75, Z-weighted): 107 dB
• Continuous Power Handling (CTA 426-B): 75 W
• Recommended Amplifier Power (RMS, Music Signal): 75 - 150 W into 4 Ohms, 40 - 75 W into 8 Ohms
• Bass Alignment: Ported
• Port Tuning Frequency: 53 Hz
• Crossover Frequency: LF/HF: 2.7 kHz
• Drive Unit Complement: 1x 4.5" RST III bass-mid driver, 1x 25 mm C-CAM Gold Dome tweeter
• Finishes: High Gloss Black, Satin White
• External Dimensions with all accessories fitted (H x W x D): 255 x 150 x 201 mm (101/16 x 57/8 x 715/16")
• Weight (each): 3.7 kg (8 lb 3 oz)
• Sold As: Pair
• Warranty: 5 years
• Compatible MAG Brackets: FIX-M