Monitor Audio Radius 90 Bookshelf Speakers

The Radius One incorporates a string of C-CAM drivers arranged in three sets of 100 mm (4") bass driver/ 25mm (1") tweeter pairings, each with its own dedicated reflex-ported chamber.

The innovative shallow-profile drivers introduced by the Radius series allow us to generate the triple impact of left, centre and right channels from a cabinet that's 40% smaller than its predecessor.

Technology

• 4" C-CAM bass driver - Radius features all new bass drivers with concave cone profiles, introduced by our top-of-the-range Platinum speakers and applied subsequently to Gold GX. Extensive research and FEA modelling have allowed us to perfect the relationship between the new radiating diaphragm and its motor design, introducing larger motor sizes and voice coils for increased excursion, higher power capability and reduced distortion.
• C-CAM Gold Dome tweeter - optimised to deliver the finest and widest performance within the compact Radius cabinets. It benefits from a more efficient rear-venting design, releasing air trapped and compressed at the back of the tweeter dome, and guiding it around the drive assembly to a rear-loading chamber.
• Single through-bolt driver fixing provides mechanical de-coupling and enhanced mid-band clarity and resolution. The through-bolts also act as rigid cross bracing to give a very solid non-resonant cabinet.
• Wall mounting bracket Included

Frequency Response

90 Hz — 35 kHz

Sensitivity (1W@1M)

87 dB

Nominal Impedance

6 ohms

Power Handling (RMS)

75 W

System Power Handling (RMS)

100 W

Recommended Amplifier Requirements

30 — 100 W

Maximum SPL

106 dBa

Bass Alignment

C:Bass reflex - Front ported L/R:Bass reflex - Side ported

Drive Unit Complement

3 x 4" (100 mm) C-CAM cone bass/mid driver

3 x 1" (25 mm) C-CAM Gold Dome tweeter

Cabinet Dimensions (H x W x D)

175 x 980 x 67 mm (67/8 x 389/16 x 25/8")

Cabinet Dimensions (Including Grille and Terminals (H x W x D))

175 x 980 x 79 mm (67/8 x 389/16 x 31/8")

Cabinet Dimensions (Including Grille and Bracket (H x W x D))

175 x 980 x 84 mm (67/8 x 389/16 x 35/16")

Pre-Construction Bracket

Dedicated bracket included

Weight

7.4 kg (16 lb 4 oz)

Sold As

Single Unit

For ultra-discreet sound all around the home, or partnered with the Radius 380 sub for explosive stereo, the original hi-fi mini monitor continues to evolve, incorporating a 4" C-CAM bass driver and 1" C-CAM tweeter.

Technology

• 4" C-CAM bass driver - Radius features bass drivers with concave cone profiles, introduced by our top-of-the-range Platinum speakers and applied subsequently to Gold GX. Extensive research and FEA modelling have allowed us to perfect the relationship between the radiating diaphragm and its motor design, introducing larger motor sizes and voice coils for increased excursion, higher power capability and reduced distortion.
• C-CAM Gold Dome tweeter - optimised to deliver the finest and widest performance within the compact Radius cabinets. It benefits from a more efficient rear-venting design, releasing air trapped and compressed at the back of the tweeter dome, and guiding it around the drive assembly to a rear-loading chamber.
• HiVe II port design - Straight from Platinum's design blueprint, the HiVe reflex port makes its Radius debut. It's shaped to have the same effect on airflow as a gun-barrel on a bullet. Rifled grooves inside the port help to accelerate the flow and reduce turbulence, so air moves in and out of the port more efficiently, for a faster more dynamic bass response.
• Single through-bolt driver fixing provides mechanical de-coupling and enhanced mid-band clarity and resolution. The through-bolts also act as rigid cross bracing to give a very solid non-resonant cabinet.
• Single point ¼" x 20TPI wall fixing. Use the optional Monitor Audio speaker mount or any standard wall bracket
• Optional floor-stand with internal (pre-wired) cable management system.

Frequency Response

80 Hz — 35 kHz

Sensitivity (1W@1M)

83 dB

Nominal Impedance

8 ohms

Power Handling (RMS)

75 W

System Power Handling (RMS)

100 W

Recommended Amplifier Requirements

30 — 100 W

Maximum SPL

102 dBa

Bass Alignment

Bass reflex - Rear ported

Drive Unit Complement

1 x 4" (100 mm) C-CAM cone bass/mid driver

1 x 1" (25 mm) C-CAM Gold Dome tweeter

Cabinet Dimensions (H x W x D)

198 x 125 x 140 mm (713/16 x 415/16 x 51/2")

Cabinet Dimensions (Including Grille and Terminals (H x W x D))

198 x 125 x 164 mm (713/16 x 415/16 x 67/16")

Cabinet Dimensions (Including Grille and Bracket (H x W x D))

198 x 125 x 203 mm (713/16 x 415/16 x 8")

Pre-Construction Bracket

Optional - Monitor Audio Speaker Mount (MASM)

Weight

2.1 kg (4 lb 10 oz)

Sold As

Pair

We currently do not have any accessories available for Monitor Audio Radius 90 Bookshelf Speakers.

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