Definitive Technology DI 5.5S Disappearing Series Square 5.25″ In-Wall / In-Ceiling Speaker

Definitive Technology DI 5.5S In-Wall/Ceiling Speaker

The Definitive Technology DI 5.5S is a high-performance, flush-mount 2-way speaker designed for applications where space is limited but sound quality cannot be compromised. Its 5.25-inch Balanced Dual Surround System (BDSS) mid/bass driver produces rich, dynamic low and midrange frequencies, while the 1-inch pivoting pure aluminum dome tweeter allows precise aiming of high frequencies toward the listening area. The axial alignment of the drivers ensures broad, balanced sound dispersion across the room. The flangeless, micro-perforated, paintable grille makes the speaker nearly invisible when installed in walls or ceilings, blending seamlessly into any décor. The rigid PolyStone basket reduces unwanted vibrations and ringing, while energy-absorbing baffle materials minimize diffraction for cleaner, more accurate sound. With a frequency response of 28 Hz to 30 kHz, nominal impedance of 8 ohms, and a sensitivity of 89 dB, the DI 5.5S supports a wide range of amplifier power and delivers full-range audio in compact spaces. Installation is simple using the rotating clamp system, requiring no plasterwork. Fire-rated enclosures are available separately for additional safety and performance. This speaker is ideal for surround or multi-room audio systems where performance and discretion are equally important.

Features of DI 5.5S

• Flush-mount in-wall or ceiling installation

• 5.25-inch BDSS mid/bass driver for dynamic, full-range sound

• 1-inch pivoting pure aluminum dome tweeter for precise high-frequency delivery

• Flangeless, paintable micro-perf grille for near invisibility

• Axial alignment for broad and balanced dispersion

• Adjustable high-definition crossover for smooth driver integration

• Magnetic grille fasteners for secure and seamless attachment

• Rotating clamp system for simple installation without plasterwork

• Cast PolyStone basket reduces resonance and distortion

• Energy-absorbing baffle material for cleaner sound

Specifications of DI 5.5S