Specifications

Technology Upgrade Audio Equipment 28 5450-1
1224_01
SECTION 28 5450 – AUDIO EQUIPMENT
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Parts and equipment required for audio enhancement and distribution.
1.02 SYSTEM DESCRIPTION
A. The audio system shall be installed and configured to provide maximum coverage in each
room.
B. The audio systems shall be installed to provide the easiest user interface possible.
1.03 COORDINATION
A. Coordinate the location of all racks, cabinets, and equipment with the data cabling installer
and the Architect.
B. Coordinate with other Contractors who are doing work in the ceiling space. Coordinate the
installation of all cables, speakers, etc., with the locations of other services.
PART 2 - PRODUCTS
2.01 AUDIO AMPLIFIERS
A. Large Amplifiers:
1. All amplifiers shall be rack mounted.
2. Amplifier shall employ a safety system to protect itself and speakers from line shorts,
thermal overload, power surges, signal degradation, and signal overload.
3. Amplifier shall be capable of a minimum of 2 types of inputs for each channel.
4. Amplifier shall be capable of mono or stereo output and processing.
5. Each input shall be controllable by a dial control on the amplifier.
6. Input sensitivity of .05 percent at 8 ohms, 1 kHz or better
7. Each amplifier shall have fans for cooling.
8. Amplifier shall have LED’s showing that the input is connected, that 1 or more of the
protections for the unit have been activated, and that the unit has activated its output
limiters.
9. Amplifiers shall be sized for nominal 8 ohm impedance speakers, unless the speakers
installed are less than 8 ohms. In that case, size the amplifiers as required.
10. Where required in the pool and drama room provide 70 volt amplifiers.
11. Amplifier shall be QSC #ISA series or equal.
B. Power Amplifiers for 70V Loudspeakers
1. Shall provide for 4 ohm, and 70 volt output.
2. Single channel equipped with 160 watts at 70v output
3. Dual channel equipped with 80 watts per channel at 70 volt output
4. Shall have remote volume controls available.
5. Rack mounted
6. Front panel volume controls.
7. Amplifiers shall be:
a. Crown Audio #180A, single channel, 80 watts
b. Crown Audio #1160A, single channel, 160 watts
c. Crown Audio #280A, dual channel, 80 watts/channel
d. Equip each with a volume controller, Crown #V1-VCAP.