Monitor Audio Radius On-Wall 4G Speaker

The Monitor Audio Radius On-Wall 4G is a slim 2-way wall-mounted loudspeaker engineered for television, film, and home cinema audio, integrating directly around or beside a screen with minimal visual intrusion. Two 4.5-inch C-CAM RST III bass-mid drivers and a 25mm C-CAM Gold Dome tweeter deliver a rated installed sensitivity of 90dB and maximum peak SPL of 114dB within a cabinet just 78mm deep and 750mm long. The Monitor Audio Radius On-Wall 4G is available at Trutone Electronics in Mississauga, Ontario.

Yes — the Monitor Audio Radius On-Wall 4G is designed for both horizontal and vertical installation with equal performance in both orientations. Horizontal placement below or above a TV screen suits centre-channel-style dialogue and film audio; vertical placement either side of the screen works for front left and right or surround channel duties. The MA roundel logo is removable so the cosmetics remain clean in either orientation.

Yes — the Monitor Audio Radius On-Wall 4G includes a wall bracket and fixing template in the box, so no additional bracket purchase is required for standard wall installation. The included template makes it straightforward to position the speaker accurately before drilling.

The Monitor Audio Radius On-Wall 4G is sold as a single speaker. This allows buyers to purchase exactly the quantity needed — one unit as a centre channel, two for a stereo front pair, or multiple units for a full discrete surround configuration.

The Monitor Audio Radius On-Wall 4G is rated at 90dB installed sensitivity, the highest of any Radius 4G model. This figure reflects the boundary gain effect of wall mounting and is not directly comparable to the free-field 82dB of the Radius 1 4G or 84dB of the Radius 3 4G. In practical use it is the most efficient and dynamically capable model in the range, with a maximum peak SPL of 114dB.

The Monitor Audio Radius On-Wall 4G extends to 69 Hz in-room at -6dB, providing more bass than the sealed Radius 1 4G but less depth than the ported Radius 3 4G at 44 Hz. For home cinema applications involving a full 5.1 or Atmos system, a dedicated subwoofer handling the LFE channel is strongly recommended. In small rooms used as a stereo front pair, a subwoofer is still advisable for full-range music performance.

The Monitor Audio Radius On-Wall 4G uses two 4.5-inch C-CAM RST III bass-mid drivers and a single 25mm C-CAM Gold Dome tweeter, all featuring C-CAM cone material and RST III surface geometry for reduced resonance. The dual bass-mid driver configuration contributes directly to the speaker's 90dB installed sensitivity and 114dB peak SPL. The crossover hands over to the tweeter at 2.3 kHz, slightly lower than the 2.7 kHz on the Radius 3 4G.

The Monitor Audio Radius On-Wall 4G is well suited for surround and rear channel duties in a home cinema system, taking advantage of its wall-mount design to position speakers at optimal height and lateral angles without floor stands. Its 78mm profile integrates with the room without visual obstruction, and support for both horizontal and vertical placement gives system designers flexibility when positioning surround channels.

The Monitor Audio Radius On-Wall 4G is a passive loudspeaker requiring an AV receiver or amplifier, making it a component in a wider system rather than an all-in-one solution. Used as a pair connected to an AV receiver, discrete speakers like the Radius On-Wall 4G typically deliver significantly more accurate stereo imaging and surround channel separation than a soundbar of equivalent price. A soundbar concentrates all channels in a single horizontal enclosure; a component system with discrete speakers places each channel in its own optimised position for genuine soundfield recreation.