Submit Data Package 3 in accordance with Section 01781 OPERATION
AND MAINTENANCE DATA
1.3
SYSTEM DESCRIPTION
The radio and public address system shall consist of an audio distribution
network to include amplifiers, mixers, microphones, speakers, cabling, and
ancillary components required to meet the required system configuration and
operation.
1.3.1
Multi-Channel System with Paging
The system shall include microphones, microphone outlet receptacles,
microphone inputs with preamplifiers, inputs for [film sound,] [compact
disc,] [magnetic tape,] [telephone,] [and] [_____] program sources,
[single] [all] channel paging, control for each input, power amplifying
equipment, and accessories required to output the public address and paging
audio signals through selected portions of the audio distribution network
as indicated. The paging signal shall replace by zones [channel [_____]]
[all channels] of the radio system output, when the paging function is
activated.
1.3.2
Single-Channel System
The system shall control and amplify an audio program for distribution
within the areas indicated. Components of the system shall include a
[mixer-preamplifier,] [mixer-amplifier,] [mike input expander,] [power
amplifier,] [microphone,] [speaker system,] [compact disc,] [cassette
player,] [AM-FM tuner,] cabling and other associated hardware.
1.3.3
System Performance
The system shall provide even sound distribution throughout the designated
area, plus or minus 3 dB for the 1/1 octave band centered at 4000 Hz. The
system shall provide uniform frequency response throughout the designated
area, plus or minus 3 dB as measured with 1/3-octave bands of pink noise at
locations across the designated area selected by the Contracting Officer.
The system shall be capable of delivering 75 dB average program level with
additional 10 dB peaking margin sound pressure level (SPL) in the area at
(THD). Unless otherwise specified the sound pressure reference level is 20
micro Pascal (0.00002 Newtons per square meter).
1.3.4
Detail Drawings
The Contractor shall submit detail drawings consisting of a complete list
of equipment and material, including manufacturer's descriptive and
technical literature, performance charts and curves, catalog cuts, and
installation instructions. Note that the contract drawings show layouts
based on typical speakers. The Contractor shall check the layout based on
the actual speakers to be installed and make necessary revisions in the
detail drawings. Detail drawings shall also contain complete point to
point wiring, schematic diagrams and other details required to demonstrate
that the system has been coordinated and will properly function as a unit.
Drawings shall show proposed layout of equipment and appurtenances, and
equipment relationship to other parts of the work including clearances for
maintenance and operation.
SECTION 16770
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