7 947100
Table 6 - Horn Spacing/Coverage
Location 5 Watt 15 Watt 30 Watt
Quiet
50-65db
110'
(12,000 ft
2
)
N/A N/A
Moderate
65-80Db
80'
(6,400ft
2
)
N/A N/A
Noisy
80-90dB
50'
(2,500ft
2
)
75'
(5,600ft
2
)
N/A
Very
Noisy
90+dB
30'
(900ft
2
)
45'
(2,000ft
2
)
60'
(3,600ft
2
)
*Contact Valcom Technical Support
Noise Level Definitions
Quiet: 50-65dB. This would include areas such as
waiting rooms or doctors' examination rooms.
Moderate: 65-80dB. This includes areas such as
warehouses, shipping areas, or light manufacturing.
Noisy: 80-90dB. This includes machine shops or
heavy manufacturing.
Very Noisy: Greater than 90dB. This would
include areas where talking to another person is very
difficult. Workers may be required to wear earplugs.
NOTE 1: In areas the sound level exceeds 100dB,
consideration should be given to using
a code call unit (V-9923B) for tone
signaling instead of using voice paging.
In extreme ambient noise, it is generally
easier to identify a tone code than to
discern speech.
NOTE 2: Reverberant Areas - To increase the
intelligibility of paging in reverberant
areas, horns should be mounted closer
to the people being paged, in effect,
mounted at a lower height, closer
together and angled towards the floor.
Speaker Cabling
All Valcom one-way amplified speakers require 2
pairs to operate. Standard telephone station cable
may be used. Existing telephone wire and feed cables
may also be used. Refer to Tables 7, 8 and 11 when
planning a job.
Audio pair: The number of speakers looped on the
audio pair is not critical unless you have a very large
job. Table 7 gives guidelines for the number of
speakers per audio run.
Power Pair: The cable runs specified in Tables 8
and 11 are very important and MUST be followed
for proper operation of the one-way paging
speakers.
Table 7 - Number of Speakers/Horns per Audio Run
Wire Run (Ft.) 22 AWG 24 AWG
100
200
400
800
1600
150
150
100
50
25
120
120
60
30
15
Table 8 - Number of Speakers per Power Run
(22 & 24 AWG)
Speaker/Horn Capacity Maximum
Wire
Run Distance
1 Watt
Interior
Speakers
5W 15W 30W 24
AWG
22
AWG
60
30
15
7
3
8
4
2
1
0
2
1
0
0
0
2
1
0
0
0
60
125
250
500
1000
100
200
400
800
1600
See Table 12 for other wire gauge sizes.
Bridges and Backboxes
Ceiling speaker bridges provide support to prevent
ceiling tile from sagging from the weight of the
speaker. They are designed for use with standard 2'
wide ceiling tiles and distribute the weight of the
speaker assembly across the tile and onto the tile
support grid.
Ceiling speaker backboxes provide an acoustic
enclosure behind the speaker for better sound quality.
They also protect the speaker from debris in the
ceiling and meet most local fire codes for use in air
plenum return ceilings. See Table 9 for Speaker and
Bridge/Backbox compatibility.
Volume Adjustments
Master volume controls are located on most Valcom
page control units. Each one-way speaker assembly
also has its own volume control. When installing a
system, set the master control to 1/2 and all speaker
and horn volume controls to 1/2 volume. After
powering up the system, adjust the individual
speakers to the desired level.
(16 strony)
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