Definitive Technology DI 4.5R Disappearing Series 4.5″ Round In-Ceiling Speaker (single)

$349.00 inc GST

In-Wall 4-1/2 speakers from the Definitive’s Disappearing (TM) In-Wall series.

Pivoting Pure Aluminum dome tweeters, Adjustable high-definition crossover

Sold as a Single Speaker


Disappearing™ Series Round 4.5” In-Wall / In-Ceiling Loudspeaker

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.

  • 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


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.




Included Accessories

(1) Wall Mounting Template

(1) Paintable Magnetic Grille


Cabinet Warranty – 5 years

Drivers Warranty – 5 years


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)


Qty Included x 1

Driver Complement
(1)  0.75″ (1.91 cm) d (Round) Pivoting Dome Tweeter – Tweeter

(1)  4.5″ (11.43 cm) d (Round) BDSS Bass/Mid – Mid/Woofer

Depth – 3.38″ (8.59 cm)

Weight – 2.6 lbs (1.18 kg)

Grille Dimensions – 5.38″ (13.67 cm) diameter


Shape – Round

Dimensions – 4.5″ (11.43 cm) diameter

Clearance Required for Mounting Dogs (add to each side of cutout) – 0.88″ (2.24 cm)


Shape – Round

Dimensions – 4.5″ (11.43 cm) diameter

Clearance Required for Mounting Dogs (add to each side of cutout) – 0.88″ (2.24 cm)


Audio Inputs

Speaker Inputs – (1) Pair of Heavy Duty, Spring Loaded – na


Total Frequency Response – 35 Hz → 30 Hz

Nominal Impedance – 8 ohms

Max Sensitivity (1 watt @ 1 meter) – 89 dB

CROSSOVER – A/V Receiver Crossover Settings – Small (100 Hz)

Additional information

Weight 1 kg

Definitive Technology

You may also like…