Monitor Audio Radius On-Wall (4G) Speaker

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$849.00

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Colour

High Gloss Black

Satin White

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Works well with

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A slim 2-way on-wall speaker from the Monitor Audio Radius 4G series, with two 4.5-inch C-CAM RST III bass-mid drivers and a 25 mm C-CAM Gold Dome tweeter. Sold as a single speaker in High Gloss Black or Satin White.

Monitor Audio says Radius On-Wall 4G is designed to sit around a TV screen for clearer, bigger TV and film sound. It can be mounted horizontally or vertically.

Drivers

2 x 4.5" bass-mid, 25 mm tweeter

Format

2-way, ported

Frequency response

69 Hz to 35 kHz (-6 dB, in-room)

Impedance

8 ohms nominal

Sensitivity

90 dB (2.83 V, 1 m, installed)

Size (H x W x D)

750 x 154 x 78 mm

Why you will love it

Made to sit around a screen

The slim, low-profile cabinet is 78 mm deep. Horizontal or vertical placement are both supported, and a removable MA roundel logo gives a clean finish in either orientation.

A wall bracket and fixing template are supplied.

Rear of a Monitor Audio Radius On-Wall 4G speaker showing the fixing points and terminals

Same drivers as the Radius range

Monitor Audio lists two 4.5-inch RST III bass-mid drivers and a 25 mm C-CAM Gold Dome tweeter, with a new crossover design, through-bolt driver bracing and HiVe II ports.

The crossover is at 2.3 kHz and the port is tuned to 62 Hz.

Add a subwoofer

Monitor Audio says that adding a matching subwoofer gives full-range, cinematic performance. In-room response is rated from 69 Hz.

Monitor Audio Radius On-Wall 4G speakers either side of a TV

Is it right for you?

A great fit if you…

Want slim speakers beside or around a wall-mounted TV
Need left, right or surround speakers that sit close to the wall
Plan to add a subwoofer to a TV or film system

Worth knowing

Sold as a single speaker, so order two for a stereo pair
It is a passive speaker and needs an amplifier or AV receiver
Monitor Audio recommends 50 to 100 W into 8 ohms, or 100 to 200 W into 4 ohms

Build your system

Pair On-Wall speakers with a receiver and a subwoofer for a TV and film system.

Amplification: Drive them from an AV receiver or stereo amplifier.
Bass: Add one of our subwoofers for full-range impact.
Bookshelf option: For a desk or shelf, see the Monitor Audio Radius 3 4G and Monitor Audio Radius 1 4G.
More on-wall speakers: Browse on-wall speakers.

Specifications

Audio

System format	2-way
Frequency response (in-room, -6 dB)	69 Hz to 35 kHz
Sensitivity (2.83 Vrms at 1 m, installed)	90 dB
Nominal impedance	8 ohms
Minimum impedance (20 Hz to 20 kHz)	4.4 ohms at 700 Hz
Maximum peak SPL (AES75, Z-weighted)	114 dB
Continuous power handling (CTA 426-B)	100 W
Recommended amplifier power (RMS, music signal)	100 to 200 W into 4 ohms; 50 to 100 W into 8 ohms

Design

Bass alignment	Ported
Port tuning frequency	62 Hz
Crossover frequency (LF/HF)	2.3 kHz
Drive units	2 x 4.5" RST III bass-mid driver; 1 x 25 mm C-CAM Gold Dome tweeter

Physical

Finishes	High Gloss Black, Satin White
Dimensions (H x W x D)	750 x 154 x 78 mm
Weight (each)	6.4 kg
Sold as	Single

Specifications from the Monitor Audio Radius On-Wall 4G product page (monitoraudio.com), checked November 2026.

What is in the box

Wall bracket
Fixing template

Questions people ask

Is it sold as a pair?

No. Monitor Audio lists Radius On-Wall 4G as sold as a single speaker.

Can it be mounted vertically?

Yes. Monitor Audio says horizontal or vertical placement are both supported, with a removable MA roundel logo.

Is a wall bracket supplied?

Yes. Monitor Audio says a wall bracket and fixing template are supplied.

How much amplifier power does it need?

Monitor Audio recommends 50 to 100 W RMS into 8 ohms, or 100 to 200 W into 4 ohms.