Monitor Audio Radius 45HD, 225HD, 270, R360 Subwoofer

Monitor Audio Radius  

Radius 270 Front Speaker

Floor-standing design featuring full-range of ‘hi-fi’ performance sound. Bespoke drivers (custom designed for the R270). Integrated plinth provides stability and better bass control. 2 x 4" MMP®II bass driver array provides excellent power handling and high-efficiency. New cast bass chassis made from high-tech glass loaded engineering polymer. Provides better damping properties than metal and increased overall strength. 1” Gold C-CAM® tweeter. Magnetically shielded drivers for safe use near sensitive microprocessor equipment or video displays. Rigid MDF construction throughout. 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. Additional grid cross bracing in critical areas to stop cabinet resonance. Front-ported bass reflex design. Smooth radius edges reduce diffraction effects and give better imagine properties. Round perforated grilles supplied in black and silver.* Can be customised to suit individual décor and taste. Crossover uses high-grade metalised Polypropylene capacitors throughout for increased clarity. High-grade air core and laminated iron core inductors provide lowest possible distortion and low insertion losses. Specially developed high-grade PCOFC internal cable used throughout for maximum signal transfer at all frequencies and low signal resistance. Terminal positioning allows neat and easy access to connections and gets rid of unsightly excess cable. 

Frequency Response 50Hz - 35KHz

Sensitivity 87dB 

Nominal  Impedance 6 ohms 

Power Handling Single (RMS) 100 watts 

System Power Handling (RMS) 150 watts 

Recommended Amplifier Requirements 40-150 watts 

Maximum SPL (dBA) 107 

Bass Alignment Bass reflex - front and rear ported 

Driver complement 2 x 4” (100mm) C-CAM® cone bass/mid driver
1 x 1” (25mm) C-CAM gold dome tweeter 

Cabinet Dimensions (H x W x D) 1000 x 177 x 208mm

(Inc Grille & Terminals) 1025 x 177 x 208mm

 Inc Plinth, With Spikes

Weight 9.9kg 

Radius 225HD Center Speaker

Frequency Response 80Hz - 35KHz 

Sensitivity 87dB 

Nominal  Impedance 6 ohms 

Power Handling Single (RMS) 100 watts 

System Power Handling (RMS) 150 watts 

Recommended Amplifier Requirements 40-150 watts Maximum SPL (dBA) 107 

Bass Alignment Bass reflex - front ported 

Driver complement 2 x 4” (100mm) C-CAM® cone bass/mid driver
1 x 1” (25mm) C-CAM gold dome tweeter 

Cabinet Dimensions (H x W x D) 610 x 140 x 67mm

(Inc Grille & Terminals) 610 x 140 x 77mm

(Inc Grille & Bracket) 610 x 140 x 84mm 

Dedicated bracket included Weight 4.2kg (9lb 4oz) 

Radius 45HD Rear Speaker

Frequency Response 120Hz - 20KHz 

Sensitivity 87dB 

Nominal  Impedance 8 ohms 

Power Handling Single (RMS) 25 watts 

System Power Handling (RMS) 50 watts 

Recommended Amplifier Requirements 15-50 watts 

Maximum SPL (dBA) 101 

Bass Alignment Sealed Cabinet 

Driver complement 1 x 3" (75mm) MMP2® cone bass/mid-range Driver
1 x 3/4" (20mm) C-CAM® gold dome tweeter  

Cabinet Dimensions (H x W x D) 100 x 100 x 100mm

(Inc Grille & Terminals) 100 x 100 x 124mm

(Inc Grille & Bracket) 100 x 100 x 162mm

Bracket Optional - Monitor Audio Speaker Mount (MASM) Weight 1kg (2lb 4oz) 

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Radius 360 Active Sub Woofer

By any standards, the Radius 360 is a remarkable product. This super-compact subwoofer has the speed, subtlety and pitch accuracy to enhance the highest quality music reproduction but it can also deliver the power and slam demanded by movie soundtracks by virtue of its downward-firing 8-inch driver, controlled by a powerful built-in 100 watt amplifier. 

The Radius 360’s weight and solidity belie its svelte dimensions, which are so vanishingly compact that the R360 can remain unobtrusive wherever you place it. 

8" ultra long throw driver with hand treated rigid paper cone. 

Downward firing driver and sealed enclosure reduce room interaction. 

Built-in 100 watt (RMS) MOSFET class A-B amplifier. 

Solid 4mm thick milled aluminium amplifier heat plate. 

Rigid 19mm MDF construction. 

Solid metal machined feet. Non-slip rubber floor pads. 

Front mounted Blue LED status indicator. 

Auto-on-off switching. Variable volume/ bass gain control. 

Variable crossover/ frequency control: 40 Hz-180 Hz. Switchable phase control: 0-180 deg. 

Switchable mode selector: Music/Movies. 

Speaker level inputs. 

Speaker level outputs. 

RCA phono inputs / LFE channel input. 

Specially designed high quality gold plated speaker and RCA terminals. 

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