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Ambient Noice Environment
Quiet - Conversations very
easily understood.
Normal - Conversations
easily understood.
Noisy - Voice must be
raised to be understood.
Very Noisy - Conversation
difficult or impossible.
* Note: An FBI-1A Feedback Eliminator is recommended. For more information, see DOD# 465.
Due to the dynamic nature of the product design, the information contained in this document is subject to change without notice. Viking
Electronics, and its affiliates and/or subsidiaries assume no responsibility for errors and omissions contained in this information. Revi-
sions of this document or new editions of it may be issued to incorporate such changes.
DOD# 498
Speaker Recommendations
Level
Typical Examples
Hotel lobby, hospital area,
50dB
quiet office
Bank lobby, department
60dB
store, auditorium
Assembly line, supermarket,
70dB*
restaurant
Punch press, printing plant,
80dB*
garage, yard
Warranty
Product Support: (715) 386-8666
Printed in the U.S.A.
Ceiling
Distance Between
Height
Speakers
9 ft
35 ft
14 ft
50 ft
9 ft
25 ft
14 ft
35 ft
9 ft
15 ft
14 ft
25 ft
Paging
25 ft to
Horns
75 ft
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