Polk Audio Atrium Sub 100 Outdoor Subwoofer
The Polk Audio Atrium Sub 100 is engineered to deliver powerful, deep bass in outdoor environments without sacrificing durability or design flexibility. Built to perform in demanding weather conditions, this high-performance outdoor subwoofer brings indoor-level low-frequency impact to gardens, patios, pool areas, and transitional indoor–outdoor spaces.
Designed as the perfect low-end partner for Polk outdoor satellite speakers, including the Atrium Sat300 range, the Sub 100 completes a full-range outdoor audio system with authority and precision.
Powerful Bass That Transforms Outdoor Audio
At the core of the Atrium Sub 100 is a 200-watt downward-firing design that produces impactful, room-filling bass outdoors—where low frequencies are typically harder to reproduce. The downward orientation improves bass coupling with the ground, resulting in deeper, more immersive low-end performance.
This makes the Sub 100 ideal for outdoor music, entertainment spaces, and social gatherings where energy and impact matter.
Dynamic Balance® Driver for Clean, Distortion-Free Bass
The Sub 100 features a massive 10-inch long-throw Dynamic Balance® driver, engineered to reduce cone distortion and maintain control at higher output levels. This ensures bass remains tight, deep, and clean—even during demanding playback.
The result is a powerful yet refined low-frequency response that enhances music without overwhelming mid and high frequencies.
Dual Voice Coil Technology for Greater Output
Using dual 2-inch voice coils with Capacitive Coupling Technology, the Atrium Sub 100 reproduces bass from both stereo channels simultaneously. This design increases output efficiency in the lowest frequencies and delivers a more dynamic, impactful bass response—perfect for large outdoor spaces.
Built-in low-pass filters allow the subwoofer to be connected directly to dedicated amplifier channels, giving you independent volume control for precise system tuning.
All-Weather Construction with IPX66 Certification
Designed for year-round outdoor use, the Atrium Sub 100 is housed in a sealed, acoustically optimised resin enclosure and is marine-certified with an IPX66 weather resistance rating. This ensures reliable performance through rain, heat, humidity, and temperature changes.
Durable materials and sealed construction make it suitable for permanent outdoor installation without compromise.
Designed to Blend Seamlessly Into Outdoor Spaces
The Sub 100 is built to disappear into your landscape:
. Paintable enclosure to match surroundings
. Colour-impregnated resin that resists fading
. Neutral design that blends into seating areas, patios, or garden layouts
It can even double as a plant stand or pedestal table, making it both functional and discreet.
Built for Safety, Stability, and Easy Installation
The Atrium Sub 100 includes thoughtful features for secure and practical outdoor installation:
. IP68-rated waterproof junction box for safe speaker connections
. 1-metre CL3-rated direct burial pigtail cable with no exposed wiring
. Eye-bolt security anchor and screw-down mounting points for stability
. Aluminium grille to protect the driver in outdoor environments
These features ensure long-term reliability while maintaining a clean, clutter-free setup.
Key Specifications
General Information
. Enclosure type: Closed
. Output: Subwoofer
. Power type: Passive
. Guarantee period: 60 months
Audio Performance
. Sensitivity: 88 dB
. Nominal impedance: 8 Ω
. Recommended amplifier power: 10 – 200 W RMS
. Maximum power handling: 200 W
Driver Configuration
. Bass driver: 1
. Largest driver size: 254 mm (10")
Design & Dimensions
. Visible shape: Circular
. Overall dimensions: 279.4 × 429.3 mm
Ideal Applications
. Outdoor entertainment areas
. Gardens and landscaped spaces
. Poolside audio systems
. Patios and terraces
. Sunrooms and transitional indoor–outdoor areas
. High-performance outdoor stereo systems
Why Choose the Polk Audio Atrium Sub 100?
. Deep, powerful outdoor bass performance
. 10-inch Dynamic Balance® long-throw driver
. Dual voice coil design for enhanced low-frequency output
. IPX66-rated weatherproof construction
. Paintable enclosure for seamless integration
. Built-in crossover for flexible system wiring
. Secure, installer-friendly design
. Backed by a 5-year Polk Audio warranty
The Polk Audio Atrium Sub 100 outdoor subwoofer is the ideal solution for anyone looking to add serious bass impact to an outdoor audio system. Combining rugged durability with refined acoustic engineering, it delivers the power, depth, and reliability needed to elevate outdoor listening to a truly premium level.
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