Atrium8 SDI

High Performance All Weather Outdoor Loudspeaker with Dual Tweeters and PowerPort Bass Venting

  • Engineered with a dual voice coil, Dynamic Balance® aerated polypropylene cone with rubber surround for greater power handling and better efficiency
  • All-weather certified and water-resistant to withstand the worst elements
  • Patented water-resistant PowerPort bass venting efficiently adds 3dB of big, realistic, musical bass output
  • Single/dual input switch

Flagship All Weather Loudspeaker

Single/Dual input switch and dual tweeter array that lets you work the speaker as a single high/performance stereo loudspeaker, or L/R speaker in a high performance stereo pair. It's time to get that indoor sound you love - all from an outdoor loudspeaker you can put anywhere around your home.

  • Dynamic Balance Technology

    This patented technology analyses the speaker's entire electro-acoustic and mechanical system for improved material selection and more efficient geometry.

  • All-Weather Certified and Water-Resistant

    Built to withstand the worst elements—salt-fog, UV, extreme temps or heavy rains, you name it.

  • Durable Construction

    Aluminium grilles and bracket, with stainless steel and brass hardware means no rust-ever.

  • Tech Specs
  • Support
Tech Specs


  • Total pieces


  • Cabinet Warranty
    5 years
  • Drivers Warranty
    5 years
  • Original Purchaser Only

Despatch Cartons

  • Carton 1
    13.5 lbs (6.12 kg)

All Weather Outdoor Loudspeaker

  • Qty Included
  • Availability
  • Orientation
  • Height
    12.875" (32.7 cm)
  • Width
    8.5" (21.59 cm)
  • Depth
    9.188" (23.34 cm)
  • Weight
    9.7 lbs (4.4 kg)
  • Front Array Driver Enclosure Type
    Durable, mineral-filled polypropylene cabinet design
  • Front Array Driver Complement
    (1)  6.5" (16.51 cm) d (Round) Dual voice coil driver with Dynamic Balance aerated polypropylene cone with rubber surround - Mid/Woofer
    (2)  1" (2.54 cm) d (Round) Anodised aluminium dome with neodymium motor structure - Tweeter

Audio Quality

  • Total Frequency Response
    45 Hz → 27 Hz
  • Nominal Impedance
    8 ohms
  • Sensitivity (1 watt @ 1 metre)
    91 dB

Swivel Wall/Ceiling Mount Mount

  • Mounting Type
    180° Speed-Lock mounting system
  • Available Orientations


  • Audio Inputs
  • Speaker Inputs
    (2) Pair of Switchable single / dual 5-way Binding Posts - Gold-Plated

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