Polk Audio Atrium 8 SDI High-Performance Outdoor Speaker
The Polk Audio Atrium 8 SDI is a flagship outdoor loudspeaker engineered to deliver powerful, detailed sound in all weather conditions. Designed for listeners who want true hi-fi performance beyond the walls of their home, the Atrium 8 SDI brings the clarity, dynamics, and depth of indoor audio to patios, gardens, terraces, and outdoor entertainment areas.
With its advanced dual-tweeter configuration and flexible input design, this speaker adapts effortlessly to a wide range of outdoor audio systems.
Single or Dual Input Flexibility
A key feature of the Atrium 8 SDI is its switchable single/dual input mode, allowing it to function as:
. A high-performance single stereo speaker, delivering left and right channels from one cabinet
. A dedicated left or right speaker when used as part of a stereo pair
This flexibility makes the Atrium 8 SDI ideal for both compact outdoor spaces and larger installations where balanced stereo imaging is essential.
Dual Tweeter Array for Expansive Sound
Equipped with two high-frequency tweeters, the Atrium 8 SDI produces a wide, immersive soundstage with excellent clarity and dispersion. High frequencies remain crisp and well-defined, even in open outdoor environments where sound naturally dissipates.
This design ensures music and vocals remain clear, detailed, and engaging across a broad listening area.
Powerful Bass with PowerPort® Venting
The Atrium 8 SDI features PowerPort® bass venting technology, which enhances low-frequency output while reducing distortion. This allows the speaker to deliver deeper, more impactful bass than traditional outdoor speakers of similar size—without sacrificing clarity or balance.
The result is a full-range sound signature that feels rich, controlled, and dynamic.
Built for All-Weather Performance
Engineered for year-round outdoor use, the Atrium 8 SDI uses a sealed enclosure and durable construction materials designed to withstand moisture, heat, cold, and UV exposure. Whether installed under eaves, on exterior walls, or in open outdoor areas, it maintains consistent performance in challenging conditions.
Ideal Applications
The Polk Audio Atrium 8 SDI is perfectly suited for:
. Gardens and landscaped areas
. Patios and terraces
. Poolside entertainment spaces
. Outdoor kitchens and dining areas
. High-performance outdoor stereo systems
Key Specifications
General Information
. Enclosure type: Closed
. Output: Single stereo
. Power type: Passive
. Guarantee period: 60 months
Audio Performance
. Frequency response: 45 – 27,000 Hz
. Sensitivity: 91 dB
. Nominal impedance: 8 Ω
. Recommended amplifier power: 10 – 125 W RMS
. Maximum power handling: 125 W
Driver Configuration
. Bass driver: 1
. Largest driver size: 165 mm
. Tweeters: 2
Design & Dimensions
. Visible shape: Rectangular
. Overall dimensions: 327 × 215.9 mm
Why Choose the Polk Audio Atrium 8 SDI?
. Flagship outdoor speaker with high-fidelity sound
. Dual tweeter array for wide, detailed audio coverage
. Switchable single or dual input for flexible system design
. PowerPort® technology for deeper, cleaner bass
. Weather-resistant sealed enclosure
. High sensitivity for efficient amplifier performance
. Backed by a 5-year Polk Audio warranty
The Polk Audio Atrium 8 SDI outdoor speaker is the ideal choice for anyone seeking uncompromising sound quality in an outdoor setting. Combining flexibility, durability, and powerful acoustic performance, it delivers an immersive listening experience that rivals indoor hi-fi systems—anywhere around your home.
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