Definitive Technology DI 4.5R Disappearing Series Round 4.5″ In-Wall / In-Ceiling Speaker

Definitive Technology DI 4.5R In-Wall/Ceiling Speaker

The Definitive Technology DI 4.5R is a high-performance, flush-mount 2-way speaker designed for spaces where discretion and sound quality are equally important. Its 4.5-inch Balanced Dual Surround System (BDSS) mid/bass driver delivers rich, dynamic low and midrange frequencies, while the 0.75-inch pivoting dome tweeter allows precise aiming of high frequencies toward the listening area. The flangeless, low-profile, paintable magnetic grille ensures that the speaker blends seamlessly into walls or ceilings. The PolyStone basket provides rigidity, reducing unwanted vibrations and ringing, while the compact design allows installation in tight spaces without compromising sound quality. With a frequency response of 35 Hz to 30 kHz, nominal impedance of 8 ohms, and 89 dB sensitivity, the DI 4.5R supports a range of amplifier power and provides full-range audio performance from a minimal footprint. Simple installation is achieved using the spring-loaded terminals and the included wall mounting template, making it ideal for multi-room audio or discreet home theater setups. The small diameter and hidden flange design make it virtually invisible once installed, providing high-quality audio without disrupting décor.

Features of DI 4.5R

• Flush-mount round in-wall/ceiling speaker

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

• 0.75-inch pivoting dome tweeter for precise high-frequency delivery

• Flangeless, paintable magnetic grille for near-invisibility

• Axial alignment for broad, balanced sound dispersion

• Adjustable high-definition crossover for smooth driver integration

• Spring-loaded heavy-duty speaker inputs

• Compact design for tight spaces

• Cast PolyStone basket reduces resonance and distortion

• Simple installation with included wall mounting template

Specifications of DI 4.5R