Definitive Technology DI5.5LCR Inwall Home Theater Speaker

Easy-to-install. Built-in configurations. Feature near-invisibility. Small area. Hidden flange design. Low profile micro-perf grilles. 3 Way Switch Control. Audio/Speaker Inputs. Sensitivity 89dB. Paintable Magnetic Grille. Single. MFG P/N: UFAA

Definitive Technology



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Powerful audio performance disappears into your walls with the DI 5.5LCR. Optimized for left/center/right front-stage configurations. Fine-tuned for seamless mixing and matching with all other DI Series speakers. Meticulously designed to be barely noticed, yet impossible to ignore.


  • Optimized for Left-, Center-, or Right-channel (LCR) Audio
    • The DI 5.5LCR features a sophisticated adjustable crossover network with custom, high-precision components for superior sonic purity.
    • Surrounding the BDSS drivers are a specially-contoured AeroRing that precisely distributes natural, well-balanced sound by minimizing diffraction.
  • Exclusive BDSS midrange/bass woofers
    • For more bass in less space while keeping midrange detailed and responsive, the DI 5.5LCR's two 5.25 mid/bass woofers leverage our 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 5.5LCR's rigid PolyStone basket provides a sturdy launching pad for the powerful excursion.
    • With BDSS drivers, you'll enjoy superior midrange and midbass dynamics and detail in packages sized for stealth.
  • Environmental EQ & Pivotable Tweeter
    • The ultralight, rigid construction of DI Series aluminum dome tweeters enables them to play significantly higher frequencies than we can hear, enabling optimum linearity within the range of human hearing. The DI 5.5LCR features a pivotable tweeter for clean, sparkling, distortion-free highs, with dispersion customizable to your space.
  • Disappearing Design
    • Whether new or existing construction, walls or ceilings, residential or commercial, DI Series speakers offer simple, stealthy installations. Our engineers have extensive custom installation experience, and have felt your pain when working with hastily-engineered products. From pivoting lock arms to paintable grilles and frames to sure-grip magnetic grille fasteners, DI Series speakers are installer-friendly to the extreme.
Total Pieces0
Included Accessories(1)Wall Mounting Template
(1)Paintable Magnetic Grille
Cabinet Warranty5 years
Drivers Warranty5 years
Shipping Cartons: 
Carton 16.63 In(16.84cm)hx17.38 In(44.15cm)wx9.63 In(24.46cm)d-10lbs(4.54kg)
Qty Included1
Driver Complement(1) 1 In (2.54cm) d (Round) Tweeter-Pivoting Pure Aluminum Dome
(2) 5.25 In (13.34cm) d (Round) Mid/Woofer-BDSS Midrange Driver
Grille Dimensions15.31 In (38.89cm) h x 7.38 In (18.75cm) w
In-Wall Mount: 
Dimensions6.44 In (16.36cm) h x 14.38 In (36.53cm) w
Clearnace Required for Mounting Dogs (add to each side of cut out)1 In(2.54cm)
Environmental EQ (User Selectable)3 Way Switch
Audio Inputs 
Speaker Inputs(1.0000) Pair of Heavy Duty, Spring Loaded-na
Audio Quality: 
Total Frequency Response28Hz→30kHz
Max Sensitivity([email protected])89dB
Cross over: 
TypeA/V Receiver Cross over Setting
A/V Receiver Cross over SettingsSmall(80HzHz)

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