Welcome to our in-depth Dymension BL-550 Review. The Definitive Technology Dymension BL-550 Outdoor Bollard Speaker represents the pinnacle of compact, high-performance outdoor audio. Designed to deliver studio-grade clarity while braving rain, sun and dirt with its IP56-rated enclosure, this speaker is the ultimate choice for discerning audiophiles looking to elevate garden, patio or light commercial installations.
Design & Build Quality
The BL-550’s rigid, mineral-filled enclosure not only provides acoustic inertness for distortion-free playback, but also ensures long-term durability in all weather conditions. At just 17.1 inches tall with a slender 10.6-inch footprint, it effortlessly integrates into your landscape. Whether anchored with the included ground spikes or secured via deck screws and concrete anchors, installation is a breeze.
Acoustic Performance
Aluminium Oxide Dome Tweeter: The 1” dome tweeter yields crisp, extended highs up to 24 kHz (-3dB), revealing nuanced cymbals and vocal air.
Mineral-Filled 5.5” Woofer: Our high-rigidity woofer delivers clear midrange detail, perfect for vocals and acoustic instruments.
Passive Bass Radiator: The 5” x 8” radiator enhances low-end extension down to 55 Hz (-10dB), producing powerful yet controlled bass without distortion.
Sensitivity & Power Handling: With an 86 dB sensitivity (2.83 V/1 m) and recommended amplifier power between 20–120 W, the BL-550 scales effortlessly from evening background ambience to high-SPL garden parties.
Whether you’re streaming jazz, rock or classical, the BL-550’s balanced tonal signature and wide dispersion ensure consistent coverage across your outdoor space.
Installation Flexibility
Definitive Technology understands that every installation is unique. That’s why the BL-550 offers 8 Ω, 70 V and 100 V multitap settings—ideal for distributed systems in residential or light commercial venues. Simply select your tap setting and run a single jacketed cable for fast, tidy wiring.
Who Should Consider the BL-550?
If you’re an audiophile seeking reference-level sound in a compact footprint, the BL-550 is your match. Garden entertainers, hospitality venues and luxury residential projects will appreciate its combination of elegant design, robust weather resistance and exceptional fidelity. And for those already invested in the Dymension ecosystem, timbre-matched performance ensures a seamless sonic journey from indoors to outdoors.
Pros & Cons
Pros
Reference-grade clarity with aluminium oxide tweeter
Rich mids and extended lows via mineral-filled woofer & passive radiator
IP56-rated for all-weather durability
8 Ω/70 V/100 V multitap for installation versatility
Timbre-matched with indoor Dymension models
5-year manufacturer warranty
Cons
Modest low-frequency extension compared to larger bollards (but exceptional for its size)
Limited colour options (currently Brown only)
Elevate Your Outdoor Audio Experience
Ready to transform your outdoor space into an acoustic oasis? Discover the Definitive Technology Dymension BL-550 Outdoor Bollard Speaker today. For personalised advice tailored to your setup, speak with our expert team at The Audio Tailor on 1300 308 711 or email sales@theaudiotailor.com.au. Let us help you craft the perfect outdoor soundscape, no matter the elements.
