High-performance slim floorstanding bipolar tower pair • fully balanced front-and-rear bipolar driver arrays • 1" aluminum oxide dome tweeters • 4.5" BDSS™ midrange/bass drivers with Linear Response Waveguide™ • dual rear-firing tuned bass ports • optional DM95 height module integration • certified Open Box New condition with full factory warranty
Condition: Open Box New (Pristine Cosmetic & 100% Tested Operational Condition)
The Definitive Technology DYMENSION DM40 Slim Bipolar Tower Speaker Pair (Open Box New) brings room-filling, enveloping three-dimensional soundstage depth to music and home theater systems within an elegantly compact footprint. Built around Definitive Technology's signature balanced bipolar radiation pattern, each slim enclosure incorporates identical front- and rear-firing driver complements featuring 1-inch aluminum oxide dome tweeters and 4.5-inch BDSS (Balanced Double Surround System) midrange/woofer drivers. This certified Open Box New pair offers untouched, pristine cosmetic condition, complete factory accessories, and full manufacturer warranty protection, providing expansive cinematic immersion without dominating valuable living room floor space.
Key Features & Innovations
Fully Balanced Bipolar Radiation Pattern — the Definitive Technology DYMENSION DM40 Slim Bipolar Tower Speaker Pair (Open Box New) fires acoustic energy simultaneously forward and backward, creating a realistic, envelopment-rich soundstage that mimics the natural spaciousness of live concert halls and commercial cinemas.
Proprietary 4.5-Inch BDSS™ Midrange Drivers — deploys patented Balanced Double Surround System technology on both the front and rear mid/bass drivers to maximize cone excursion without wobble or cone breakup, delivering pristine vocal clarity and tight mid-bass punch.
Precision Aluminum Oxide Dome Tweeters — equipped with 1-inch rigid aluminum oxide dome high-frequency drivers that reproduce extended, silky highs past 30 kHz with zero harshness, even during explosive Hollywood surround sound transients.
Seamless DM95 Atmos Height Integration — engineered with an integrated top connection terminal and plug-in mounting system for the optional Definitive Technology DM95 elevation module, making upward-firing Dolby Atmos and DTS:X expansion clean and wire-free.
Certified Open Box New Assurance & Full Warranty — thoroughly bench-tested, audited, and verified by certified audio technicians to guarantee uncompromised acoustic fidelity, packaged with all original factory materials and backed by full manufacturer warranty coverage.
FAQ — Definitive Technology DM40 Open Box Pair
What is the exact condition of this Definitive Technology DYMENSION DM40 Slim Bipolar Tower Speaker Pair (Open Box New)?
The Definitive Technology DYMENSION DM40 Slim Bipolar Tower Speaker Pair (Open Box New) is in pristine, mint condition; it has merely had its outer packaging opened for showroom display or customer return inspection, has passed full sweep testing, and retains full factory warranty protection.
How far from the back wall should these bipolar speakers be placed?
Because the DM40 uses a balanced bipolar array with rear-firing drivers, placing them approximately 6 to 18 inches away from the rear boundary wall allows the rear sound wave to reflect naturally and generate an expansive soundstage without muddying midrange frequencies.
Can I add Dolby Atmos upward-firing speakers to these towers?
Yes. The top panel features a removable cover plate revealing hidden terminals specifically engineered to dock the optional Definitive Technology DM95 Atmos-enabled height speaker directly onto the tower without visible jumper wires.
What amplifier power is recommended for the DM40 slim towers?
The DM40 pairs effortlessly with AV receivers and stereo integrated amplifiers delivering between 25 and 200 Watts RMS per channel into 4 to 8 ohm loads.
Why Buy From Us
Authorized Definitive Technology reference dealer providing certified Open Box inventory with full factory warranty coverage
Dedicated home cinema and two-channel audio consultants available to guide receiver pairing and Atmos module setup
Multi-point physical inspection and complete acoustic performance verification completed before shipping
Fast, fully insured priority delivery in reinforced original manufacturer packaging on every order
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Definitive Technology Dymension DM30 or DM20 dedicated center channel loudspeakers
