Monitor Audio Radius 390 Subwoofer

Code: RADIUS390
  • £695.00
  • (FREE UK Delivery)
  |   Usually dispatched within 24 hours

The Radius 390 comprises of colour-coded 10" C-CAM active/ABR drivers, powered by a 200 W Class D amplifier. Enjoy rapid EQ optimisation from Impact, Music and Movie settings, and system automation via the 12 V trigger.


  • 18 mm MDF cabinet construction with internal bracing
  • Cool-running 200 W Class D amplifier with switch mode power supply (SMPSU)
  • Twin side-firing 10" 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

Technical Specification:

  • System Format: Active sub-woofer system – Auxiliary (ABR) loading. 18 mm MDF cabinet
  • Lower Frequency Limit: 30 Hz (- 6 dB)
  • Upper Frequency Limit: Variable 40 – 120 Hz @ 24 dB/Octave
  • Amplifier Output: 200 Watts @ 1% THD+N
  • Amplifier Classification: Class D amplifier with Switch mode power supply (SMPSU)
  • Bass EQ Profiles: 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
  • Drive Unit Complement: 1 x 10" (250 mm) C-CAM long throw driver 1 x 10" (250 mm) ABR
  • Input Impedance: > 20 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)): 348 x 330 x 345 mm (1311/16 x 13 x 129/16")
  • Connection: Stereo RCA in, LFE in, 12v Trigger in (3.5 mm mono mini-jack)
  • Trigger Input: 5 - 12v via 3.5mm mono mini-jack socket
  • Power Consumption: 200 Watts / 0.5 Watts in Standby (ErP approved)
  • Weight (unpacked): 13.76 kg (30 lb 4 oz)

We endeavour to despatch same day for orders placed up to 12 noon on available stock items (items with stock message "Usually dispatched within 24 hours"). Please remember to check with us first for a physical stock check if next day delivery is important to you. Any items with stock message "Usually dispatched within 72 hours" are items that we do not hold in stock but order in from the importer or manufacturer as soon as a customer order is recieved. Occasionally these may be delayed beyond 72 hours due to importer/manufacturer stock levels but we will inform you as soon as we can if this is the case.

UK ORDERS:  We despatch the bulk of our UK mainland items on a 24 hour service – Free of Charge.  Non Mainland locations - Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland may take a day or so longer and are not Free of Charge. Smaller items are delivered using Royal Mail recorded delivery or special delivery. Larger items are delivered using a courier service such as Interlink Express, DPD, UPS or DHL. 

INTERNATIONAL ORDERS: We offer competitive rates which can be confirmed by email. Please just ask – we will need a full delivery address and telephone number. Smaller items are delivered using Royal Mail Small Packets Airmail with International Tracked and/or Signed depending on value of item and availability of the service. Larger International shipments are sent by insured and tracked services using DPD, DHL or UPS. If there are any delays due to specific customs regulations, etc, you will be contacted by Turntableworld or by the courier with a request for any further information required. Customs duties do not apply for shipments into any EU country (for a full list please refer to the EU Country List). Customs duties can apply for countries outside of the EU. Customers in these countries are responsible for all taxes and duties incurred when the items enter their country.

COLLECT IN STORE OR HOME INSTALL:At the request of the manufacturer some items cannot be supplied by mail order but you can click and buy them and then elect to collect them from our store or arrange a home install (if applicable). Applicable items clearly state that they are Collect in store or home install. Once ordered you will receive a message prompting you to contact us by phone or email to arrange for us to deliver and install or to reserve and collect from our store at your convenience, you will also be advised of the delivery time / stock availability as not all Home install / collect in store items are held in stock. 

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