Monitor Audio Radius 380 Active Subwoofer

Radius 380
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Monitor Audio Radius 380 Active Subwoofer

Monitor Audio engineers have invested a huge amount of research and development into the challenge of subwoofer design. It’s relatively easy to produce large bass in a large box, but finding the optimum mix of parameters required to generate genuinely deep dynamic bass from a more compact cabinet requires a vastly more innovative approach.

With the ultra-compact Radius 380 Monitor Audio will elevate your expectations of what’s possible in a small enclosure. Within the Radius 380’s diminutive cube, twin side-firing 8” C-CAM drivers - one active and one passive ABR - work in tandem with a powerful 200w cool-running Class D amplifier (double the power of its predecessor) to deliver a seismic bass foundation for films and music, distinguished by an intoxicating blend of depth and speed.

Tuned for an utterly dynamic result with Radius satellites in film and music systems, the Radius 380 also offers Impact, Movie and Music pre-sets for easy EQ operation. The drivers have no grilles but are colour-coded to coordinate with cabinet finish. A 12V trigger syncs the 380 with other AV components when the system is activated

· 18mm MDF cabinet construction with internal bracing

· Cool-running 200W Class D amplifier with switch mode power supply (SMPSU)

· Twin side-firing 8” C-CAM® drivers - one active and one passive ABR

· Low pass filter switch – for LFE or Stereo input selection

· Power switch with ON – Auto- Off/ trigger settings

· Stereo/ LFE RCA inputs

· 3 x Pre-set EQ settings – Music/Movie/Impact - See more at:

System Format

Active sub-woofer system – Auxiliary (ABR) loading. 18mm MDF cabinet

Low Frequency Limit

30Hz (- 6dB)

Upper Frequency Limit

Variable 40 – 120 Hz @ 24dB/Octave

Amplifier Power Output

200 Watts @ 1% THD+N

Amplifier Classification

Class D amplifier with Switch mode power supply (SMPSU)

Bass EQ Switch

Music/ Movie/ Impact

Phase Control

0 & 180 degrees

Auto Sensing

Line Level >3.5mV

Input Level Requirements

Standby after approximately 15 minutes if no signal sensed

Driver Compliment

1 x 8” (200mm) C-CAM® long throw driver 1 x 8” (200mm) Auxiliary bass radiator

Input Impedance

> 20K Ohms

Mains Input Voltage

AC 110 - 120 V ~ 50/60Hz; AC 220 - 240 V ~ 50/60Hz (Factory Region Preset)

Dimensions including amp & feet
(H x W x D)

308 x 290 x 305mm
(121/8 x 117/16 x 12 Inches)


Stereo RCA in, LFE in, 12v Trigger in (3.5mm mono mini-jack)

12v Trigger Input

5 - 12v via 3.5mm mono mini-jack socket

Power Consumption

200 Watts / 0.5 Watts in Standby (ErP approved)

Weight (Unpacked)

10.16Kg (22lb 6oz)

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