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New UIW Reference In-Ceiling Speaker (UIW RCS II)

The new UIW RCS II is a significant addition to Definitive’s

Reference Architectural Series of loudspeakers designed to bring 
the performance of the finest free-standing speakers into custom 
flush-mount in-wall and in-ceiling installations. The Reference 
Ceiling Speaker (RCS II) is intended for use as an in-ceiling front
main left, center or right channel speaker, as well as a rear or side 
surround speaker in custom installed home theater systems of the 
highest quality. In addition, it can be used as a superb left or right
speaker in a high quality stereo music system.

Like our other Reference Architectural Series speakers (IWSub

10/10, IWSub Reference, RLS II, RLS III and RSS II), the RCS II is a
totally non-resonant sealed medite enclosure, which in this case easily
and attractively installs flush into the ceiling in either new or existing 
construction. It features a D’Appolito driver array angled down and
aimed at the listening area (two 5.25" cast-basket bass/midrange 
drivers and a 1" pure aluminum tweeter) as well as two 6.5" pressure-
coupled planar low bass radiators. The precisely configured dual
angled baffles incorporate a uniquely effective acoustic treatment
which combines a computer-optimized ribbed surface with special
dampening panels in order to achieve a linear uncolored sound 
combined with boxless three-dimensional imaging in which acoustic
events seem to effortlessly float in space. In fact, the overall sonic 
performance of the RCS II is truly remarkable, combining breath-
taking dynamics, engrossing musical subtlety and amazingly 
spacious imaging that totally belies its in-ceiling configuration. 

In addition, the RCS II with its active driver/bass radiator 

combination achieves an extended low-frequency response, which is 
deep and dynamic with a smooth and controlled roll-off that allows
it to seamlessly blend with a subwoofer with a quality that has 
never been previously achieved in an in-ceiling system. Of course, 
our in-wall UIW Sub 10/10 or UIW Sub Reference are a perfect 
complement to the RCS II for unmatched performance in a stealth
home theater.

New UIW Reference Surround Speaker (UIW RSS II)

The UIW RSS II is another important new addition to Definitive’s

Reference Architectural Series. The RSS II is intended for rear or 
side surround use in 5, 6, 7, 8, 9 or more channel custom-install 
systems of the highest quality. Like the other Reference Architectural
Series speakers, the RSS II is a totally non-resonant sealed medite
enclosure, which easily installs flush into walls or ceilings in either
new or existing construction. It features a curved angle bipolar array,
which is perfect for movie and music surround use because it provides
an ideal combination of direct sound for specificity and localization
and ambient sound for enhanced spaciousness. 

The RSS II delivers uniquely enveloping surround performance

totally immersing the listeners in a complete 360-degree soundstage.
Walls seem to disappear and the listening room will be almost 
magically transformed into the location of the original sonic event.
The curved aspect of the bipolar array further improves dispersion 
into the room. When installed in the ceiling, the direction in which
the driver arrays face can be rotated 90 degrees in order to optimize
the performance depending on the specific location of the speakers 
in relation to the seating area.

Each RSS II bipolar surround speaker contains two complete 

3-way full-range systems for a total of 6 driver/radiators in each 
speaker. The RSS II’s dynamic, spacious and uncolored sonic 
signature has been specifically engineered to blend perfectly with 
any of Definitive’s loudspeakers whether freestanding, in-wall or 
in-ceiling for an amazing lifelike sonic experience. 

Definitive Redefines Architectural Sonic Perfection!

RCS II Specifications:

Cutout Size: 14

3

/

8

" x 14

3

/

8

". Outer Dimensions:

15

1

/

2

" x 15

1

/

2

". Depth: 5

7

/

8

". Driver Complement: Two high-definition cast-

basket 5

1

/

4

" bass/midrange drivers, two 6

1

/

2

" pressure-coupled low bass

radiators, one 1" pure aluminum dome tweeter. Rec. Assoc. Amplification:
10 – 250 watts. Frequency Response: 22 Hz – 30 kHz.

RSS II Specifications:

Cutout Size: 11

5

/

8

" H x 9

7

/

8

" W. Outer

Dimensions: 12

3

/

4

" H x 11" W. Depth: 3

7

/

8

". Driver Complement: 

Two high-definition cast-basket 4

1

/

2

" bass/midrange drivers, two 4

1

/

2

"

planar pressure-coupled low bass radiators, two 1" pure aluminum dome
tweeters. Rec. Assoc. Amplification: 10 – 200 watts. Frequency Response:
26 Hz – 30 kHz.

11433 Cronridge Drive, Owings Mills, MD 21117 • (410) 363-7148 • 

www.definitivetech.com

“sounded great ... I was tremendously impressed”  

Fred Manteghian, 

Ultimate AV

“Sound so solid and clean you’ll think it’s coming from a higher power”

Peter Pachal,

Sound & Vision

Reviews: