60 cm.
60 cm.
5"
8"
3"
0781
0485
2"
8"
5"
3"
2"
8"
5"
3"
2"
Speakers deployment in the ceiling
The correct deployment of the speakers in the ceiling is very important to achieve a consistent sound level in all the area. This is a prime factor
in the understandability of the PA messages and in the quality of the background music.
COVERING ANGLE
BASIC RULES FOR CHOOSING CEILING SPEAKERS (and attaining good message understandability):
A. A big speaker concentrates the sound in a narrower but more intense focus than a smaller one.
In the same way that some lamps concentrate the light beam in a narrow but intense angle and others
illuminate in a wide but more uniform angle, speakers have a different covering angle, depending
on their size.
B. The bigger the size, the greater the acoustic performance for a speaker, that is, more sound with the
same amplifier power.
The 8" speakers compensate with their high performance the bigger distance to the listener when they
are located in high ceilings. This is the reason why we advise 8" speakers for high ceilings and 5" ones
for mid and low ceilings. The 3" should only be used in rooms with small ceiling height AND very little
ambient noise.
C. The 5" speakers offer a trade off between good performance and wide covering.
With a exceptional performance for its size (92 dB at 1 W), and a wide covering angle (100°), the 5"
speaker is the right solution for providing sound from the ceiling when it is not very high and there is
not a high level of noise.
EXAMPLE OF 5 SPEAKERS LAYOUT IN 2 x 2 ft PLATES CEILING.
Advisory rating. For special cases, please contact
.
Office
Bank branch office
Shop
Travel agency
Luxury restaurant
Doctors surgery
Youth shop
Bar
Restaurant
Bingo
Gym
Store
Ceiling
plate size
Alternate rows
RECOMMENDED FLUSH MOUNTED SPEAKERS
DEPLOYMENT IN A PREMISES CEILING
2,5 meters
3,5 meters
3 meters
9 plates
7 plates 10 plates
5 plates 7 plates
7 plates
5 plates
4 plates
NO
6 plates
NO
NO
Performance:
94 dB @ 1 W
Covering
angle: 80°
SPEAKER FEATURES
SPEAKER
piso_1
Speaker
each ...
Area
PARTIAL VIEW OF THE CEILING
each ... plates
> 4 meters
4 meters
3 meters
3,5 meters
2,5 meters
MEDIO
MEDIO
SURFACE COVERED BY A SPEAKER
HEIGHT
NOISE LEVEL
LOW
MEDIUM
HIGH
If it is possible, hang the speakers to lower them
to 14 feet (approx. 4 m)
NOISE LEVEL
LOW
MEDIUM
HIGH
Bus or railroad
station
Public areas
Hall
Gaming parlour
Music bar
PLACE A SPEAKER EACH PLATES
HEIGHT
SPEAKER / FLOOR
Performance:
92 dB @ 1 W
Covering
angle: 100°
Performance:
86 dB @ 1 W
Covering
angle: 120°
Performance:
83 dB @ 1 W
Covering
angle: 160°
2" : 10 m
2
2" : 10 m
2
2" : 10 m
2
3" : 30 m
2
5" : 24 m
2
5" : 35 m
2
5" : 16 m
2
8" : 12 m
2
8" : 18 m
2
3" : 16 m
2
5" : 8 m
2
5" : 16 m
2
5" : 24 m
2
8" : 18 m
2
5" : 8 m
2
8" : 4 m
2
80
o
100
o
120
o
160
o
78
Summary of Contents for Millennium
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Page 37: ...37 Reserved for new and forthcoming products ...
