- Speaker Type: 2-Way Passive Bookshelf / Stand-Mount Speaker (Bass-Reflex)
- Mid/Bass Driver: 4" (100 mm) C-CAM cone driver with a conical profile
- Tweeter: 1" (25 mm) C-CAM Gold Dome Tweeter
- Power (RMS / Peak): 75W / 100W
- Recommended Amplifier Power: 30 – 100W
- Frequency Response (-6dB): 80Hz – 35kHz
- Sensitivity: 83 dB (1W / 1m)
- Maximum SPL: 102 dBA (per pair)
- Nominal Impedance: 8 Ohms
- Enclosure Type: Bass-Reflex with rear-firing HiVe II (High Velocity Port) tuning port
- Mounting Points: 1/4" x 20 UNC socket for wall bracket (Monitor Audio MASM)
- Connection Terminals: Gold-plated single binding posts
- Color / Finish: High Gloss Black (glossy piano lacquer)
- Dimensions (H x W x D): 198 x 125 x 140 mm (164 mm deep including grille and terminals)
- Weight (per speaker): 2.1 kg
The Monitor Audio Radius 90 are passive 2-way bookshelf and stand-mount speakers, designed for high-fidelity Hi-Fi stereo systems, discreet home theater installations, or multi-room audio applications. They feature a 4-inch (100 mm) C-CAM® (Ceramic-Coated Aluminium/Magnesium) bass and midrange driver with a concave profile, delivering high rigidity and low distortion. For high frequencies, they feature a 1-inch (25 mm) Gold Dome C-CAM® tweeter for detailed, extended response. The cabinet is made from solid MDF and features a bass-reflex design, a rear-facing HiVe® II tuned port, and a Single Through-Bolt driver-retention system to enhance structural rigidity.
Basic Features
- Speaker Type: 2-Way Passive Bookshelf / Stand-Mount Speaker (Bass-Reflex)
- Mid/Bass Driver: 4" (100 mm) C-CAM cone driver with a conical profile
- Tweeter: 1" (25 mm) C-CAM Gold Dome Tweeter
- Power (RMS / Peak): 75W / 100W
- Recommended Amplifier Power: 30 – 100W
- Frequency Response (-6dB): 80Hz – 35kHz
- Sensitivity: 83 dB (1W / 1m)
- Maximum SPL: 102 dBA (per pair)
- Nominal Impedance: 8 Ohms
- Enclosure Type: Bass-Reflex with rear-firing HiVe II (High Velocity Port) tuning port
- Mounting Points: 1/4" x 20 UNC socket for wall bracket (Monitor Audio MASM)
- Connection Terminals: Gold-plated single binding posts
- Color / Finish: High Gloss Black (glossy piano lacquer)
- Dimensions (H x W x D): 198 x 125 x 140 mm (164 mm deep including grille and terminals)
- Weight (per speaker): 2.1 kg
C-CAM Technology Drivers & Acoustic Design
The Monitor Audio Radius 90 features a 4-inch (100 mm) low- and mid-frequency driver made from C-CAM (Ceramic-Coated Aluminium/Magnesium) composite material. This material offers a higher stiffness-to-weight ratio, ensuring a fast response and low distortion. For high-frequency reproduction up to 35 kHz, it uses a 1-inch (25 mm) C-CAM Gold Dome tweeter with a rear chamber to reduce pressure and improve high-frequency clarity.
HiVe II Port Technology & Single Bolt-Through Fixing System
The cabinet incorporates the HiVe II (High Velocity, Low Noise Port System) bass-reflex port design. The port features aerodynamic straight ridges that accelerate airflow and reduce turbulence, delivering faster, cleaner low-frequency response. In addition, the drivers are secured to the cabinet using Single Through-Bolt technology, in which a through-bolt fastens each driver from the rear of the cabinet, increasing overall structural rigidity and damping unwanted vibrations.
Cabinet Construction, High-Gloss Finish & Placement Options
The compact cabinet of the Radius 90 is made from high-density MDF and finished in multiple layers of High Gloss Black lacquer. The rear features gold-plated connection terminals and an integrated 1/4" x 20 UNC thread, allowing easy mounting on wall brackets (such as the Monitor Audio MASM) or dedicated floor stands.
- Power
- 75 W
- Freequency Range
- 80 - 35000 Hz
- Nominal Impendance
- 8 ohm
- Sensitivity
- 83 dB
- Driver Configuration
- 2 No of Drivers
- Placing
- Bookself
- Bass Driver
- 4 "
- Dolby Atmos
- No
- Quantity
- Pair
- Colour
- Black
- Height
- 19.8 cm
- Width
- 12.5 cm
- Length
- 14 cm
Important information
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.