DI 4.5R

Disappearing™ Series 4.5” Round In-Ceiling Loudspeaker

  • Flangeless, flush mount design and micro-perf grilles allow 5.38” of visibility to match mini recessed lighting fixtures
  • Deeper sound quality with precision BDSS™ drivers and a pivoting pure aluminum dome tweeter
  • Rigid PolyStone™ baskets eliminate unwanted vibrations to prevent ringing and minimize distortion
  • Axially aligned design provides broader sound dispersion and more natural balance
  • 219.00 Each

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  • Free ground shipping on all orders

In-Ceiling Sound that Covers More Ground

Powerful performance is practically invisible with the Definitive Technology Disappearing™ Series. Combining a 5.3” visible diameter and 4.5” mid/woofer that effortlessly outperforms larger traditional speakers, the DI 4.5R easily installs into your ceiling to envelop any space in dynamic, high definition audio. With this over-achieving, flush mount loudspeaker, you’ll hear fantastic sound in every corner of the room, but you won’t see a thing.

  • Tech Specs
  • Reviews
  • Q & A
  • Support
Tech Specs


  • Total Pieces


  • Included Accessories
    • (1) Wall Mounting Template
    • (1) Paintable Magnetic Grille


  • Cabinet Warranty
    5 years
  • Drivers Warranty
    5 years

Shipping Cartons

  • Carton 1
    6.13" (15.57 cm) h x 8.44" (21.44 cm) w x 7.56" (19.2 cm) d - 4 lbs (1.81 kg)

In-Ceiling Speaker

  • Qty Included
  • Availability
  • Driver Complement
    • (1)  0.75" (1.91 cm) d (Round) Tweeter - Pivoting Pure Aluminum Dome; Axially Aligned
    • (1)  4.5" (11.43 cm) d (Round) Midrange - BDSS Midrange Driver
    • (1)  0" (0 cm) h x 0" (0 cm) w (Oval) Tweeter/Mid Array - Direct Radiating 2 Way Coaxial
  • Weight
    2.6 lbs (1.18 kg)
  • Grille Dimensions
    5.38" (13.67 cm) diameter

In-Ceiling Mount

  • Shape
  • Dimensions
    4.5" (11.43 cm) diameter
  • Clearnace Required for Mounting Dogs
    0.88" (2.24 cm)

In-Wall Mount

  • Shape
  • Dimensions
    4.5" (11.43 cm) diameter
  • Clearnace Required for Mounting Dogs
    0.88" (2.24 cm)


  • Audio Inputs

Audio Quality

  • Total Frequency Response
    35 Hz → 30 kHz
  • Max Sensitivity (1 watt @ 1 meter)
    89 dB


  • A/V Receiver Crossover Settings
    Array: Small (100 Hz)
Q & A

Product Documentation

Key Features

Designed for Invisibility

With a minimal visible surface area, hidden flange architecture and micro-perf grille, the DI 4.5R disappears into any environment, without the need for custom sheetrock or spackle work.

Balanced Double Surround System

Proprietary BDSS™ technology delivers the wide dynamic range and deep bass output of much larger drivers in a small-sized, high-efficiency mid/woofer.

Adjustable Crossover

A sophisticated adjustable crossover network with custom, high-precision components produces superior sonic purity for crisp, clean sound.

Balanced Dispersion

BDSS™ technology, aim-ready tweeters and a specially-contoured AeroRing™ around the driver distributes natural, well-balanced sound everywhere in the room.

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