Specifications

Technology Upgrade Audio Equipment 28 5450-9
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B. The Contractor shall label each speaker cable at each end with a wrap around label that has
been laser printed.
1. The Contractor shall give each speaker wire a separate designator. The Engineer
shall approve the proposed numbering prior to printing the labels.
C. Each component shall be labeled for what it does and what it provides. Labels shall be laser
printed, and shall be attached to the front of each unit.
1. For example, the amplifier in a cabinet may be marked “Microphone Amplifier-First
Floor Hallway.”
D. It is extremely important that each microphone cable be labeled at each end with a laser
printed wrap around label. This will allow the Owner to know exactly which microphone is
being connected.
1. Where microphones are terminated, the Contractor shall provide a minimum of 3 feet
of spare cable for future movements.
2. The Contractor shall provide the proposed labeling of the microphone cables prior to
the actual installation of the labels.
E. All speakers shall be set so that every area in the room where persons may stand or sit is
covered with sound.
F. Rack shall be mounted in the wooden cabinet.
1. Attach base of rack to the cabinet base. Provide connections that will support the rack
and components when it is pulled out for maintenance.
2. Install rack to keep sliding rails out of the way of incoming cables and power.
3. Coordinate rack with carpenters work.
4. Test the in-out sliding of the rack and rotation prior to installing equipment.
3.07 TESTING (PRE-COMMISSIONING)
A. All systems shall be initially adjusted and set by the contractor, unless otherwise specified, in
writing, by the Consultant or the architect.
B. A complete mechanical, electronic, and acoustical inspection to verify proper installation and
operation shall be made, including mountings, interconnection, freedom from hums, buzzes,
noise, and oscillation. Test procedures and documentation of results shall be provided with
the system documentation.
C. All microphone and line level signal cables shall be verified for proper “Pin to pin” wiring.
Example: Microphone cables; Pin 1 shall be Shield, Pin 2 shall be Positive (high or +), Pin 3
shall be Negative (low or -). Correct any irregularities and include documentation of results
that shall be provided with the system documentation.
D. Polarity testing and verification shall be performed by the sound system contractor to verify;
“Positive pressure on ALL microphones shall produce positive pressure at ALL
loudspeakers.” It is the sound system contractor’s responsibility to correct all discrepancies
found. Test procedures and documentation of results shall be provided with the system
documentation.
3.08 COMMISSIONING
A. The Audio Contractor will provide a technician to assist the Consultant during the
commissioning of the system. The technician will be ready and available to make any
necessary adjustments or repairs to the system that the Consultant finds in error of the
specification.
B. The Audio Contractor will have on hand all installation documentation and equipment
manuals. The Audio Contractor will have the necessary tools available for any adjustment or
repairs.
C. Once the system is commissioned, the Audio Contractor will provide final As-built documents
to the Consultant for review. These documents will reflect the true condition of the system
after commissioning.