Definitive Technology UFEA User Manual

DI 4.5R In-Ceiling Loudspeaker

Cutout

Dimension

115 mm

[4.5”]

86 mm

[3.3750”]

Overall Dimension

With Grille

135.5 mm
[5.3750”]

Overall Dimension

Without Grille

132 mm

[5.25”]

C

Dim

11

[4

86 mm

[3.3750”]

Disappearing™In-Wall Series

Extraordinary High-Performance Speakers that Virtually Disappear in Your Room

The DI 4.5R Disappearing™ In-Wall speaker features near-invisibility
thanks to its small diameter, hidden flange design, and low-prof ile
micro-perf grille. The DI 4.5

R is a mere 5

the same size as the mini recessed lighting fixtures that are all the rage in
lighting design today. It is as easy to install as traditional flanged flush­mount speakers, and doesn’t require custom sheetrock/spackle skills to
install yet it is practically invisible when installed in a ceiling.

3

⁄8" (13.55 cm) in diameter, about

The DI 4.5

R features Def initive’s most advanced technologies such as an

advanced BDSS driver and pivoting Pure Aluminum Dome Tweeter for
spectacular audio performance far beyond traditional flush-mount speakers.

Definitive’s exclusive Balanced Double Surround System (BDSS) driver
technology permits the DI 4.5
dynamic range than larger competitive 5

R to deliver more bass output and

1

⁄4" speakers.

With a pivoting 20mm Pure Aluminum Dome Tweeter, featuring a specially
shaped Waveguide housing that avoids the diffraction distortions of
bridge-mounted tweeters, and a sophisticated adjustable crossover
network, the DI 4.5

R Disappearing In-Wall delivers the kind of lifelike

sonic performance and broad, even dispersion that have made Definitive
Technology the leader in high-performance loudspeakers.

• Simple conventional installation — no spackle

work required

• Latest generation BDSS Drivers for superior bass

and dynamic range

• Pivoting Pure Aluminum Dome Tweeters ensure

exceptional detail

• Axially aligned design ensures broad, balanced

coverage area

• AeroRing™damps resonance and improves off-axis

sound quality

Download the manual: www.definitivetech.com/Learning/manuals.aspx

Overall
Dimension
772 mm
[30.3750“]

Cutout
Diameter
125 mm
[4.9375“]

Frame
Width
150 mm
[5.8750“]

DI 4.5R In-Ceiling Loudspeaker

460 mm
[18.11”]

166 mm

[6.54”]

202 mm

[7.95”]

116.5 mm
[4.5938”]

136 mm

[

5.35”]

9

9 mm

[3.88”]

Disappearing™In-Wall Series

Superior technology ensures lifelike sound quality for every listener in the room.

SPL vs F

requency SPL vs Angle

Smooth and accurate on-axis frequency response

Order SKU UFEA

Order SKU RBAB

Uniform polar response

Optional fire-rated back boxes:

Besides meeting code for multi-family
and commercial installations, these heavy­gauge steel enclosures reduce sound
leakage into adjacent li

ving spaces. Order

SKU code UFEA.

Optional rough-in brackets:

The pre-construction bracket is installed
before the drywall to indicate where the
drywall contractor should cut the speak

er
hole. Metal mesh wings can be positioned
at v

arious angles and nailed or stapled to
studs and joists. Order SKU code RBAB
(2 units per carton).

Painting: DI Series grilles may be

painted to match wall color

yer or air brush to apply diluted latex

spra

. Use a paint

paint (6:1 paint to water or latex thinner)
in four light coats. DO NOT PAINT
GRILLES WITH A BRUSH OR
ROLLER! For full painting instructions,
see the manual:

www.definitivetech.com/Learning/manuals.aspx

Specifications:

Cutout Diameter 4
Mounting Depth In Wall **2

3

Tweeter

⁄4" (20 mm); Product Weight 2.6 lb. (1.16 kg);

11433 Cronridge Drive, Owings Mills, Maryland 21117, U.S.A. [phone]

Frequency Response 35 Hz – 30 kHz; Sensitivity 88 dB;
Impedance compatible with 4 – 8 Ohm outputs;
Min/Max Recommended Power 10/150 WPC

* From back of mounting flange to deepest part of product
** Total depth when product installed in 1/2" (12.7mm) thick material

Grille Diameter 53⁄8" (13.55 cm);

1

⁄2" (11.5 cm); Total Depth *33⁄8" (8.64 cm);

7

⁄8" (7.4 cm); Woofer 41⁄2" (11.4 cm);

www.DefinitiveTech.com