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Monitor Audio Radius 90 Bookshelf Speaker - Gloss Black

The original hi-fi mini monitor, and respected by all. The new Radius 90 continues to evolve, delivering a greater size-defying performance than ever before.
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Monitor Audio

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Product Description



We couldn't believe our eyes when we first unpacked the Monitor Audio Radius R90 bookshelf speakers. They were downright beautiful and almost impossibly small. But the real surprise came when we got our first listen. Despite their compact size, the sound they delivered was open, room-filling, and spacious, with true-to-life imaging and a big soundstage. We've heard our share of compact monitors here at Crutchfield, but it's not every day that we come across such impressive performers in such a tiny package. Use a pair of R90s to create a compact music system in your home office or living room, or mount four or more around your home theater room for a surround sound system with superb detail and clear dialogue.


The Radius R90 benefits from many of the technical advances, materials, and construction techniques found in Monitor's renowned, top-of-the-line Platinum series speakers. Both its 4" woofer cone and 1" dome tweeter are made of a high-tech ceramic-coated aluminum/magnesium alloy. This exceptionally stiff, lightweight material allows the drivers to respond swiftly and precisely to the audio signal for greater accuracy. The tweeter also gets an anodized coating of gold that helps ensure smooth, extended highs.

Instead of using conventional screws, Monitor mounts each driver firmly into the cabinet using a single bolt that threads into its back plate, then attaches to the back of the enclosure. This mechanically decouples the driver and front baffle to enhance clarity and resolution, while acting as rigid cross bracing for a more solid, non-resonant cabinet. The lack of visible mounting hardware also adds to the R90's overall look of elegance.


Monitor Audio speakers have long been known for their sturdy, vault-like cabinet construction. The R90's enclosure feels solid and substantial, with an exterior clad in a beautifully finished high-gloss black, white, or real walnut wood veneer.

Additional Information

Additional Information

Frequency Response80Hz - 35KHz
Speaker Drivers1 x 4” (100mm) C-CAM® cone bass/mid driver / 1 x 1” (25mm) C-CAM gold dome tweeter
Speaker Impedance (Ohm)8
Recommended Amplifier (Watts)75
Sensitivity83 dB
Speaker StyleWall Mount (Fitting Not Included) / Book Shelf
Dimensions (W x H x D)198 x 125 x 164mm

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