Definitive Technology DI-4.5R Round 4.5 in-wall in-ceiling speaker

With patented technology backing the midrange/woofer, the DI 4.5R is meticulously engineered to outperform larger traditional speakers. This overachieving, flush-mount loudspeaker fills every corner of the room with dynamic, high-performance audio. But you’ll hardly see a thing.

The DI Series Loudspeakers deliver sensational sound quality while virtually disappearing into walls and ceilings with hidden flange design. Treat yourself to dynamic bass, smooth midrange, and sparkling treble with little impact on your decor.

The ultralight, rigid construction of DI Series aluminum dome tweeters enables them to play significantly higher frequencies than can hear, enabling optimum linearity within the range of human hearing. The DI 4.5R features a pivotable tweeter for clean, sparkling, distortion-free highs, with dispersion customizable to your space.

For more bass in less space while keeping midrange detailed and responsive, the DI 4.5R’s mid/bass woofer leverages exclusive Balanced Double Surround System (BDSS). The double butyl rubber surrounds produce a much greater cone excursion than other comparably sized drivers. And the DI 4.5R’s rigid PolyStone basket provides a sturdy launching pad for the powerful excursion.

With BDSS drivers, you’ll enjoy superior midrange/bass dynamics and detail in packages sized for stealth.

The DI 4.5R features a sophisticated adjustable crossover network with custom, high-precision components for superior sonic purity.

Surrounding the BDSS driver is a specially-contoured AeroRing that precisely distributes natural, well-balanced sound by minimizing diffraction.

The Axially-Aligned configuration of the tweeter with the midrange/woofer provides broader sound dispersion and more natural balance.

Whether new or existing construction, walls or ceilings, residential or commercial, DI Series speakers offer simple, stealthy installations.
Hidden flange architecture is fantastic for décor, because the nearly border-free design virtually disappears into walls and ceilings. What isn’t fantastic is the typical installation complexity. However, DI Series hidden flange designs are as easy to install as traditional flanged flush-mount speakers, and don’t require custom Sheetrock or spackle skills to install the practically invisible look.

All DI Series speaker grilles and grille frames are paintable, with easy step-by-step instructions. Once you have your perfect look, powerful neodymium magnets attach the grilles to the speakers for a secure, tool-free finish.