Monitor Audio Radius 4G Series – Compact HiFi and Home-Cinema Loudspeakers for Elegant Living-Space Integration

Monitor Audio Ltd. has renewed the Monitor Audio Radius 4G Series with a clear brief: compact loudspeakers should not have to behave like compromised lifestyle products. The new range is built for rooms in which loudspeakers must be easy to place, visually restrained and technically credible at the same time. According to Monitor Audio Ltd., the fourth generation has been developed from the ground up and is aimed equally at listeners seeking a discreet stereo system and home-cinema users who want compact loudspeakers to integrate neatly into a living space. The Monitor Audio Radius 4G Series comprises three loudspeaker models, supported by a dedicated floor stand, desktop pad and wall-mounting options, while its acoustic platform draws on technologies familiar from larger Monitor Audio Ltd. loudspeaker ranges, including C-CAM RST III and the C-CAM Gold tweeter.

Key Facts Monitor Audio Radius 4G Series

• Compact loudspeaker range for stereo, home cinema and discreet living-space integration
• Three models: Monitor Audio Radius 1 4G, Monitor Audio Radius 3 4G and Monitor Audio Radius On-Wall 4G
• C-CAM RST III bass/midrange drivers and C-CAM Gold tweeters
• UD Uniform Dispersion Waveguide on the Monitor Audio Radius 3 4G and Monitor Audio Radius On-Wall 4G
• Flexible placement on furniture, optional floor stands, desktop surfaces or walls
• Finishes in High-gloss Black and Satin White
• Prices start at € 478,- per pair for the Monitor Audio Radius 1 4G

Compact loudspeakers for rooms where technology should not dominate

The Monitor Audio Radius 4G Series is built around a simple but increasingly relevant idea: loudspeakers should deliver convincing sound without visually taking possession of the room. That places the range squarely in one of the more interesting areas of modern HiFi and home cinema. Many listeners no longer want large enclosures or an overtly technical aesthetic in shared living spaces, yet they still expect proper loudspeaker engineering rather than decorative audio.

Monitor Audio Ltd. therefore positions the new Monitor Audio Radius 4G Series not merely as a compact HiFi solution, but also as a practical option for home-cinema systems, offices, retail spaces and other interiors where equipment has to sit comfortably within the architecture. The strength of the concept lies in its flexibility. Depending on the model and the accessory used, the loudspeakers can be placed on a lowboard, sideboard or shelf, used on a dedicated floor stand, set up on a desktop or mounted directly on the wall.

Monitor Audio Radius 1 4G – the compact entry point

The smallest model in the range is the Monitor Audio Radius 1 4G. Measuring just 135 x 135 x 156 mm, it is genuinely compact and is therefore suited to situations in which conventional bookshelf loudspeakers would already appear too large. Monitor Audio Ltd. sees the Monitor Audio Radius 1 4G as a solution for minimalist stereo systems, compact home-cinema satellite duties and nearfield listening.

Technically, the Monitor Audio Radius 1 4G uses a 4 inch C-CAM RST III bass/midrange driver with a 102 mm diameter, partnered with a 19 mm C-CAM Gold tweeter. The cabinet is a sealed design, a sensible choice at this scale when control and integration are more important than attempting to extract exaggerated bass from a very small enclosure. As with most ultra-compact loudspeakers, anyone seeking deeper low-frequency weight will sensibly partner it with a subwoofer.

Technical Data Monitor Audio Radius 1 4G

Monitor Audio Radius 3 4G – more volume, more reach

The Monitor Audio Radius 3 4G is the larger compact loudspeaker in the series. At 255 x 150 x 201 mm, it remains living-room friendly, but brings additional cabinet volume and a more capable driver layout. It uses a 4,5 inch C-CAM RST III bass/midrange driver with a 115 mm diameter, combined with a 25 mm C-CAM Gold tweeter.

One of the meaningful differences over the smaller Monitor Audio Radius 1 4G is the UD Uniform Dispersion Waveguide, which is intended to improve dispersion and support a cleaner acoustic handover between the treble and midrange. The Monitor Audio Radius 3 4G is a bass-reflex design and, according to the technical data, reaches down to 44 Hz in-room. That makes it considerably more plausible as the main loudspeaker in a compact stereo system, while it can also serve as a front, rear or surround loudspeaker in home-cinema applications.

Technical Data Monitor Audio Radius 3 4G

Monitor Audio Radius On-Wall 4G – slim, flexible, wall-friendly

The third loudspeaker in the range is the Monitor Audio Radius On-Wall 4G. It has been developed specifically for wall mounting and is supplied with the required bracket. With a depth of just 78 mm, it remains notably slim and should read more as an architectural element than an object awkwardly attached to the wall.

Its driver complement is more ambitious. Two 4,5 inch C-CAM RST III bass/midrange drivers work with a 25 mm C-CAM Gold tweeter and UD Uniform Dispersion Waveguide. That makes the Monitor Audio Radius On-Wall 4G suitable not only as a wall-mounted loudspeaker for music, but also as a centre channel or LCR solution in home-cinema systems. The Monitor Audio logo can be repositioned for horizontal or vertical installation, which is a small but useful detail when integration is part of the brief.

Technical Data Monitor Audio Radius On-Wall 4G

C-CAM RST III, C-CAM Gold tweeter and HiVe II

Acoustically, Monitor Audio Ltd. has clearly not treated the Monitor Audio Radius 4G Series as a cosmetic exercise. The C-CAM RST III bass/midrange drivers use a ceramic-coated aluminium-magnesium diaphragm with third-generation Rigid Surface Technology. According to Monitor Audio Ltd., this diaphragm structure is intended to reduce distortion and resonance while supporting a stable, light and responsive presentation.

The tweeters also draw on Monitor Audio Ltd.’s C-CAM technology. The Monitor Audio Radius 1 4G uses a 19 mm version, while the Monitor Audio Radius 3 4G and Monitor Audio Radius On-Wall 4G are fitted with a 25 mm C-CAM Gold tweeter. On the two larger models, the UD Uniform Dispersion Waveguide forms part of the high-frequency system. It is designed to improve dispersion and create a more homogeneous acoustic relationship between midrange and treble.

For the bass-reflex models, Monitor Audio Ltd. also uses HiVe II port technology. This is intended to reduce turbulence in the reflex port and control airflow more effectively. In practical terms, the aim is a tighter, cleaner and more dynamic bass performance without asking too much of the compact enclosures.

A screwless design with acoustic purpose

The clean appearance of the Monitor Audio Radius 4G Series is helped by Monitor Audio Ltd.’s Through-Bolt driver fixing system. Instead of being visibly screwed from the front, the drivers are secured from the rear by threaded rods. The result is a smooth front baffle without exposed screws, but the benefit is not purely cosmetic.

This construction method has been part of many Monitor Audio Ltd. loudspeaker ranges for years. In the Monitor Audio Radius 4G Series, it is used to increase cabinet rigidity, reduce unwanted enclosure resonance and lock the drivers more precisely into the structure. The cabinets are available in High-gloss Black and Satin White.

Accessories as part of the concept

The Monitor Audio Radius 4G Series is not just a trio of loudspeakers. It also includes an accessory system that is clearly part of the overall idea. The Monitor Audio Radius Floor Stand 4G is designed for the Monitor Audio Radius 1 4G and Monitor Audio Radius 3 4G, placing the loudspeakers at a seated ear height of 780 mm. The stand column also acts as a cable channel, allowing a cleaner installation, while the three-legged construction is intended to provide stable support.

For desktop and nearfield use, Monitor Audio Ltd. offers the Monitor Audio Radius Desk Pad 4G. It is angled by 5 degrees, tilting the loudspeaker slightly towards the listener, and is made from solid rubber to protect surfaces and reduce vibration. For wall mounting the Monitor Audio Radius 1 4G and Monitor Audio Radius 3 4G, the Monitor Audio MASM and Monitor Audio FIX-M brackets are available, while the Monitor Audio Radius On-Wall 4G is supplied with an integrated wall bracket.

Technical Data Accessories

All benefits at a glance

• Very compact loudspeakers for discreet stereo and home-cinema systems
• Easy integration on furniture, floor stands, desktops or walls
• Monitor Audio Radius On-Wall 4G suitable for centre-channel or LCR use
• C-CAM RST III bass/midrange drivers for precise, dynamic reproduction
• C-CAM Gold tweeter with UD Uniform Dispersion Waveguide on the larger models
• Through-Bolt driver fixing for a cleaner appearance and increased cabinet rigidity
• HiVe II port technology on the bass-reflex models
• Matching accessories for tidy, room-friendly installation
• Finishes in High-gloss Black and Satin White

Price and Availability

The Monitor Audio Radius 4G Series is scheduled to be available from specialist retailers from early July. The Monitor Audio Radius 1 4G is listed at a recommended retail price of € 478,- per pair, while the Monitor Audio Radius 3 4G is priced at € 678,- per pair. The Monitor Audio Radius On-Wall 4G is sold individually and is priced at € 529,- per unit. The Monitor Audio Radius Floor Stand 4G is priced at € 348,- per pair, the Monitor Audio Radius Desk Pad 4G at € 29,- per pair. The Monitor Audio MASM wall bracket is listed at € 30,- per unit, while the Monitor Audio FIX-M is priced at € 49,- per unit.

Conclusion

The new Monitor Audio Radius 4G Series is not a loudspeaker range that tries to impress through size. Its appeal lies elsewhere: Monitor Audio Ltd. has combined a very compact format with genuinely serious loudspeaker engineering. C-CAM RST III, the C-CAM Gold tweeter, UD Uniform Dispersion Waveguide, HiVe II and Through-Bolt driver fixing make it clear that this is not merely a handsome living-room product. The Monitor Audio Radius 4G Series looks particularly interesting for listeners who want stereo or home-cinema systems to be discreet, flexible and properly engineered.