Monitor Audio Radius 1 (4G) Bookshelf Speakers

The Monitor Audio Radius 1 (4G) represents a refined approach to compact speaker design, delivering balanced sound across a compact footprint. 

Built with Monitor Audio's signature engineering, these bookshelf speakers combine a carefully tuned cabinet with quality drivers to produce clear midrange and controlled bass response suitable for smaller to medium-sized rooms. The fourth-generation design reflects decades of acoustic expertise, offering versatility for both music and home theatre applications. Their neutral tonal balance makes them equally at home with classical recordings, contemporary music, or film soundtracks. The compact dimensions allow flexible placement on shelves, stands, or wall mounting without dominating your space.

Ideal for listeners seeking quality audio without excessive size or complexity, the Radius 1 (4G) delivers the Monitor Audio standard of performance in an accessible package.

The Radius 1 4G delivers ultra-compact hi-fi sound for AV, surround and multi-room systems with versatile mounting.

Radius 1 4G is ideal for discreet AV, surround or multi-room sound systems. With versatile mounting options, a wall, desktop or floor stand and the option of adding a subwoofer, Radius 1 4G can deliver full-range, high-fidelity sound from an ultra-compact form. The newly designed 4-inch C-CAM driver with RST III geometry, partnered with a 19 mm C-CAM Gold Dome tweeter, delivers precise, lifelike sound from this cleverly engineered micro-speaker.

Big Sound, Minimal Footprint

Compact yet remarkably capable, the Radius 1 4G delivers genuine hi-fi performance from an ultra-small form factor.

At its heart, a newly designed 4-inch C-CAM RST III bass/mid driver pairs with a fully vented 19 mm C-CAM Gold Dome Tweeter to produce precise, lifelike sound with exceptional clarity, controlled dispersion and low distortion – hallmarks of Monitor Audio's metal-driver expertise.

Engineered for versatility, Radius 1 4G suits discreet AV, surround and multi-room installations equally, with mounting options for wall, desktop, or floor stands via compatible accessories. Add a Monitor Audio subwoofer for truly full-range performance. Whether enhancing a design-led home, boutique commercial space or immersive home cinema, Radius 1 4G achieves the ideal balance of acoustic transparency and understated elegance.

Features at a glance:

• 1 x 4-inch C-CAM Driver
• RST II Cone
• RST III Bass Driver
• 19 mm C-CAM Gold Dome Tweeter
• New Crossover Design
• Through-bolt Driver Bracing
• HiVe II Ports
• Finishes in Satin White & High Gloss Black

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.

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): 100 Hz — 35 kHz
• Sensitivity (2.83 Vrms @ 1m, Free-Field): 82 dB
• Nominal Impedance: 8 Ohms
• Minimum Impedance (20 Hz to 20 kHz): 3.8 Ohms @ 950 Hz
• Maximum Peak SPL (AES75, Z-weighted): 104 dB
• Continuous Power Handling (CTA 426-B): 50 W
• Recommended Amplifier Power (RMS, Music Signal): 50 - 100 W into 4 Ohms, 25 - 50 W into 8 Ohms
• Bass Alignment: Sealed
• Crossover Frequency: LF/HF: 3.2 kHz
• Drive Unit Complement: 1x 4" RST III bass-mid driver, 1x 19 mm C-CAM Gold Dome tweeter
• Finishes: High Gloss Black, Satin White
• External Dimensions with all accessories fitted (H x W x D): 135 x 135 x 156 mm (55/16 x 55/16 x 61/8")
• Weight (each): 1.8 kg (3 lb 15 oz)
• Sold As: Pair
• Warranty: 5 years
• Compatible MAG Brackets: MASM, FIX-M