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Monitor Audio Radius 45 Black Gloss Speaker Pair

Model #: R45BL
Monitor Audio
At a Glance
For ultra-discreet sound all around the home, or partnered with the Radius 380 sub for explosive stereo, the miraculously small Radius 45 houses a 3" MMP II mid-bass driver and rear-firing 3/4" C-CAM tweeter, and has no right to sound as good as it does.
Available in Store Only
$415.00Save $NaN

Get to know this product.


  • 3" MMP II Driver. All drivers are dedicated and model specific, with each model in the Radius series being designed and voiced individually.
  • 3/4" Gold C-CAM tweeter, rear-firing to enhance sound dispersion characteristics
  • Single through-bolt driver fixing. Provides mechanical de-coupling properties resulting in enhanced mid-band clarity and resolution. 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
  • This product is now available to use with home theatre design software, The CEDIA Designer.

Additional Specifications

Frequency Response120 Hz — 20 kHz
Sensitivity (1W@1M)87 dB
Nominal Impedance8 ohms
Power Handling (RMS)25 W
System Power Handling (RMS)50 W
Recommended Amplifier Requirements15 — 50 W
Maximum SPL101 dBa
Bass AlignmentSealed Cabinet
Drive Unit Complement1 x 3" (75 mm) MMP II cone bass/mid-range Driver, 1 x 3/4" (20 mm) C-CAM Gold Dome tweeter
Cabinet Dimensions (H x W x D)100 x 100 x 100 mm (3 15/16 x 3 15/16 x 3 15/16")
Cabinet Dimensions (Including Grille and Terminals (H x W x D))100 x 100 x 124 mm (3 15/16 x 3 15/16 x 4 7/8")
Cabinet Dimensions (Including Grille and Bracket (H x W x D))100 x 100 x 162 mm (3 15/16 x 3 15/16 x 6 3/8")
Pre-Construction BracketOptional - Monitor Audio Speaker Mount (MASM)
Weight1 kg (2 lb 4 oz)

Misc. Specs

Product Weight (lbs.)2.25
Color Finish NameBlack Gloss
Manufacturer Warranty5 Year
RMS Power Handling (Watts)50
Impedance8 ohms
Maximum Power Handling (Watts)50
Number of Speakers2
WarningProposition 65 Warning for California Residents