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Radius 90 Bookshelf Speakers

Radius 90 Bookshelf Speakers

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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. Free shipping to the continental US only !

New 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 modeling 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.

New C-CAM Gold Dome tweeter - optimized 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 20 TPI 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 — 35k Hz

Sensitivity ( 1 Watt @ 1 Meter ): 83 dB

Nominal Impedance: 8 ohms

Power Handling ( RMS ): 75 Watt

System Power Handling ( RMS ): 100 Watt

Recommended Amplifier Requirements: 30 - 100 Watt

Maximum SPL: 102 dBa

Bass Alignment: Bass reflex - Rear ported

Drive Unit Complement: 1 x 4" C-CAM cone bass / mid driver;  1 x 1" C-CAM Gold Dome tweeter

Cabinet Dimensions: ( H x W x D ) 13/16" x 4 15/16" x 5 1/2"

Pre-Construction Bracket: Optional - Monitor Audio Speaker Mount ( MASM )

Weight: 4 lbs 10 oz