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Paradigm ADP-390 v.6 Surround Speakers The ADP-390 v.6 is a dipole surround speaker with a twist -- Paradigm calls it an Adapted Dipole speaker. It essentially offers the diffuseness of a dipole speaker with the superior bass response of a bipole. On the front is a 7.5" carbon-infused polypropylene bass driver. On each of this wedge-shaped speaker’s two angled sides are a 1" H-PTD tweeter and a 4.5" M-ICP midrange driver. The rear of the ADP-390 has a single set of five-way binding posts, and brackets for wall mounting. The grille is removable -- with a lot of elbow grease. The soundfield the
This A$480 asking price for the Paradigm ADP-390 v.6 is ambitious, sitting well above the typical used market range of A$250 to A$350 for this model in excellent condition. While a pair in perfect working order with wall-mounting hardware can command higher value, the current listing exceeds the median used price by roughly A$130–A$230, making it a tough ask unless the condition is truly mint and accessories are fully included.
That said, the ADP-390 v.6 is a well-regarded dipole surround speaker praised for its 5-driver, 3-way design and smooth reverberant-field response, delivering immersive rear-channel performance in home theater setups. Its 90 dB sensitivity and 70 Hz low-frequency extension make it a capable, original-owner choice for enthusiasts seeking authentic dipole sound. If the listing includes wall-mounting hardware and shows no scratches beyond minor stand marks, it becomes a worthwhile buy for those prioritizing tonal accuracy over budget savings.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Paradigm Electronics was founded in 1982 in the suburbs of Toronto, Canada, by Scott Bagby, a pioneering loudspeaker designer, and Jerry VanderMarel, a consumer electronics veteran. With input from Jerry's brother Bill, they revolutionized speaker design by integrating scientific acoustics research from the National Research Council of Canada and rigorous listening tests. From humble beginnings, Paradigm rapidly expanded, opening its Paradigm Advanced Research Center in 1993 and earning early accolades like the 1990 Best Price/Value Award, cementing its innovative heritage.
The brand focuses primarily on high-performance loudspeakers, including iconic models like the Atom and Monitor series, alongside premium lines such as Signature. Paradigm controls its entire production process in a massive 225,000-square-foot facility outside Toronto, manufacturing drivers, cabinets, and components in-house for unmatched precision. While best known for freestanding and architectural speakers, it has ventured into electronics through sister brands like Anthem, emphasizing value-driven hi-fi without straying into turntables, DACs, headphones, or cables.
Paradigm holds a strong mid-to-high-end position in the global market, renowned for delivering audiophile-grade sound at accessible prices. A bestseller across six continents, it commands significant shares in freestanding (No. 6) and architectural speakers among top integrators. Repurchased by founder Scott Bagby in 2019, Paradigm upholds its commitment to the "Paradigm Sound"—transparent, dynamic audio that punches above its weight, appealing to discerning buyers seeking Canadian craftsmanship over boutique exclusivity.
See all Paradigm listings on RADAR.
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