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https://www.ecoustics.com/products/monitor-audio-radius-4g/

Monitor Audio Launches Compact Speaker 'Radius Series 4G' Designed for Modern Residential and Commercial Spaces

Compact hi-fi speakers starting at $525 per pair, featuring on-wall models and flexible installation options.

Monitor Audio has introduced the Radius Series 4G, a newly designed line of compact speakers targeting listeners and installation professionals who need serious sound without large cabinets taking up space.

The new lineup consists of the Radius 1, Radius 3, and Radius On-Wall, with matching floor stands, desk pads, and wall bracket options. This demonstrates that the Radius Series 4G goes far beyond a simple refresh of a typical compact speaker. The series offers configuration possibilities ranging from stereo listening, desktop audio, multiroom systems, and home theater to commercial installation spaces where flexibility in space, appearance, and installation is as important as sound quality.

Monitor Audio positions the Radius Series 4G around its 'Transparent Design Philosophy,' but the greater emphasis is on practicality. It is a compact speaker designed to blend seamlessly with finishes in modern residential and commercial spaces while remaining flexible enough to serve stereo, surround, and nearfield listening applications. Compact speakers are often treated as compromise products. However, the Radius 4G appears to be the result of Monitor Audio's effort to make this category useful again.

Compact Speakers, Smarter Engineering

The Radius Series 4G remains a compact speaker lineup, but rather than simply updating the cabinet, Monitor Audio has invested meaningful engineering technology in this generation.

The core driver technology maintains Monitor Audio's C-CAM cone material, which uses a ceramic-coated aluminum/magnesium structure designed to be lightweight and rigid while resisting unwanted flexing. For the Radius 4G, the RST III cone geometry has been newly integrated into that driver platform. This is a surface pattern developed to reduce split vibrations and resonance across the entire frequency spectrum. This is critically important in compact speakers. Because available cabinet volume is limited, driver control ability carries much greater weight in the performance equation.

The tweeter has also been redesigned. The Radius Series 4G uses a new C-CAM gold dome tweeter with an external magnet motor system, conceptually moving closer to a full drive unit rather than relying on a more traditional internal puck magnet design. Monitor Audio states that the goal is superior control and cleaner high-frequency performance, allowing Radius models to deliver a more open sound without harshness or thinness.

The crossover network has also been reworked through new measurements, listening, and component selection. This may not be the most glamorous part of the story, but it's a critical factor in determining whether compact speakers cohere or fall apart. Even with good drivers, they must be properly integrated, especially when speakers are used for desktop listening, wall-mounted applications, or home cinema channels.

Attention was also given to cabinet structure. Monitor Audio uses Through-Bolt Driver Bracing to secure the drive unit to the cabinet rear with specific torque, improving rigidity while reducing unwanted chassis resonance. Each model also includes Monitor Audio's HiVe II port design, engineered to improve air flow and bass control. For the new Radius 3, the port is 50% larger than the previous generation, which should help deliver more low-frequency output while still maintaining a compact enclosure.

The accessory lineup is also an important element. The Radius 4G floor stand uses wooden tripod legs with internal cable routing, giving the speaker a presence that blends better with furniture. The desk pad is made of vibration-isolating rubber and tilts the speaker slightly upward for nearfield listening. Add the wall bracket option, and the Radius 4G begins to look less like a single-purpose compact speaker and more like a flexible system for stereo, desktop, surround, multiroom, and commercial installation environments.

Monitor Audio Radius Series 4G Product Lineup

Monitor Audio Radius 1 4G

The Radius 1 4G is the smallest model in the new Radius Series 4G lineup, designed for inconspicuous AV, surround, multiroom, desktop, and compact stereo applications. It features a sealed 2-way cabinet with a 4-inch RST III bass/mid driver with Monitor Audio's C-CAM cone technology and a 19 mm C-CAM gold dome tweeter.

Key Specifications and Options:

• Price: $525 per pair

• System: 2-way compact speaker

• Drivers: 4-inch RST III bass/mid driver, 19 mm C-CAM gold dome tweeter

• Frequency Response: 100 Hz – 35 kHz (in-room, -6 dB)

• Sensitivity: 82 dB

• Nominal Impedance: 8 ohms

• Minimum Impedance: 3.8 ohms at 950 Hz

• Power Handling: 50 watts

• Recommended Amplifier Power: 25 – 50 watts at 8 ohms, 50 – 100 watts at 4 ohms

• Bass Alignment: Sealed

• Crossover Frequency: 3.2 kHz

• Dimensions: 5 5/16 x 5 5/16 x 6 1/8 inches

• Weight: 3 lb 15 oz each

• Finish: High Gloss Black, Satin White

• Sales Unit: Pair

• Compatible Mounts: MASM, FIX-M

Monitor Audio Radius 3 4G

The Radius 3 4G is the larger mini-monitor in the lineup and the most versatile choice for stereo, TV, gaming, desktop, multiroom, and small commercial installations. It's upgraded with a 4.5-inch RST III bass/mid driver and a 25 mm C-CAM gold dome tweeter, and adopts a ported cabinet for deeper bass extension compared to the Radius 1 4G.

Key Specifications and Options:

• Price: $725 per pair

• System: 2-way compact mini-monitor

• Drivers: 4.5-inch RST III bass/mid driver, 25 mm C-CAM gold dome tweeter

• Frequency Response: 44 Hz – 35 kHz (in-room, -6 dB)

• Sensitivity: 84 dB

• Nominal Impedance: 8 ohms

• Minimum Impedance: 4 ohms at 250 Hz

• Power Handling: 75 watts

• Recommended Amplifier Power: 40 – 75 watts at 8 ohms, 75 – 150 watts at 4 ohms

• Bass Alignment: Ported

• Port Tuning Frequency: 53 Hz

• Crossover Frequency: 2.7 kHz

• Dimensions: 10 1/16 x 5 7/8 x 7 15/16 inches

• Weight: 8 lb 3 oz each

• Finish: High Gloss Black, Satin White

• Sales Unit: Pair

• Compatible Mounts: FIX-M

• Placement Options: Desktop, floor stand, or wall mount

Monitor Audio Radius On-Wall 4G

The Radius On-Wall 4G is the TV and home cinema model of the Radius 4G lineup. Designed for horizontal or vertical wall placement around the screen, it uses two 4.5-inch RST III bass/mid drivers and one 25 mm C-CAM gold dome tweeter in a slim ported cabinet. Wall brackets and installation templates are included as standard.

Key Specifications and Options:

• Price: $575 each

• System: 2-way on-wall speaker

• Drivers: Two 4.5-inch RST III bass/mid drivers, 25 mm C-CAM gold dome tweeter

• Frequency Response: 69 Hz – 35 kHz (in-room, -6 dB)

• Sensitivity: 90 dB at installation

• Nominal Impedance: 8 ohms

• Minimum Impedance: 4.4 ohms at 700 Hz

• Power Handling: 100 watts

• Recommended Amplifier Power: 50 – 100 watts at 8 ohms, 100 – 200 watts at 4 ohms

• Bass Alignment: Ported

• Port Tuning Frequency: 62 Hz

• Crossover Frequency: 2.3 kHz

• Dimensions: 29 1/2 x 6 1/16 x 3 1/16 inches

• Weight: 14 lb 2 oz each

• Finish: High Gloss Black, Satin White

• Sales Unit: Single

• Installation: Horizontal or vertical wall mount, brackets and installation template included

Monitor Audio Radius Floor Stand 4G

The Radius Floor Stand 4G is designed for the Radius 1 4G and Radius 3 4G. The stand uses wooden tripod legs, a single-bolt speaker attachment method, and integrated cable routing that allows speaker cables to exit neatly through the base.

Key Specifications and Options:

• Price: $395 per pair

• Compatibility: Radius 1 4G and Radius 3 4G

• Design: Wooden tripod legs

• Cable Management: Internal cable routing through stand

• Speaker Attachment: Single-bolt mounting method

• Dimensions: 30 11/16 x 20 1/16 x 17 7/16 inches

• Weight: 3 lb 5 oz

• Finish: Black, White

• Sales Unit: Pair

Monitor Audio Radius Desk Pad 4G

The Radius Desk Pad 4G is made for desktop placement of the Radius 1 4G and Radius 3 4G. It uses rubber of a specific durometer for vibration isolation and tilts the speaker slightly upward to better aim it in nearfield settings.

Key Specifications and Options:

• Price: $40 per pair

• Compatibility: Radius 1 4G and Radius 3 4G

• Material: Rubber

• Purpose: Desktop stability, vibration isolation, and speaker tilt upward

• Dimensions: 15/16 x 4 1/2 x 5 7/16 inches

• Weight: 14 oz

• Finish: Black

• Sales Unit: Pair

Monitor Audio FIX-M Speaker Mount

The FIX-M is a wider-range wall mount option for the Radius 1 4G and Radius 3 4G. It allows angle settings of 0, 15, or 30 degrees from center, with a rotating front section enabling a total of 14 possible positioning options.

Key Specifications and Options:

• Price: $55 each

• Compatibility: Radius 1 4G, Radius 3 4G, Bronze 50 6G

• Angle Settings: 0, 15, or 30 degrees from center

• Positioning: 14 possible positions

• Finish: Black, White

Monitor Audio MASM Mount

The MASM mount is a smaller wall or ceiling mount option for users who want to separate compact speakers from desks or furniture. It uses a ball-joint connection for positioning and is specified as compatible with the Radius 1 4G.

Key Specifications and Options:

• Price: $35 each

• Compatibility: Radius 1 4G, Bronze 1, MASS Satellite, Radius 45 3G, Radius 90 3G

• Installation: Wall or ceiling

• Adjustment: Ball-joint positioning

• Finish: Black, White, Silver

The Monitor Audio Radius Series 4G is not trying to replace full-size hi-fi speaker systems, and that's the point. The appeal of this series lies in the combination of a compact cabinet, genuine Monitor Audio driver technology, flexible mounting options, and clean design language that works well in spaces where traditional speakers are either too large or too visually dominant.

What differentiates the Radius 4G is the range of applications. The Radius 1 4G can perform inconspicuous surround, desktop, and multiroom duties; the Radius 3 4G becomes a more capable compact stereo, TV, gaming, and nearfield option; and the Radius On-Wall 4G offers installation professionals and home theater users a slim horizontal or vertical speaker for screen-based systems. Add dedicated floor stands, desk pads, and wall brackets, and this looks less like a compact speaker refresh and more like a flexible compact audio system.

This product is for apartment dwellers, design-conscious listeners, desktop users, custom installation professionals, and anyone building living room, media room, retail, public space, or office systems where sound quality matters but large boxy speakers aren't even in the cards. Those obsessed with bass and listeners in large rooms will still want a subwoofer, but for modern spaces demanding serious hi-fi credentials in compact speakers, the Radius 4G is a very sensible choice.

• More Information: https://www.monitoraudio.com