27_41_00_ADD01_0004.pdf

Crab Orchard National Wildlife Refuge Visitor Center Audio/Visual System

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SECTION 27-41-00

AUDIO/VISUAL SYSTEM

PART 1 - GENERAL

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

B. Flat panel display 27-41-50

1.02 SUMMARY

A. Equipment for a complete and operable single unit integrated digital media presentation

(audio/visual) system.

B. This section includes the furnishing and installation of an audio/visual system for the Multi-

Purpose Rooms.

C. The supplier shall provide all components, whether specified or not, for a complete and operable system that meets the design intent as indicated in these specifications and on the drawings.

1.03 SYSTEM DESCRIPTION

A. The system shall consist of, but not be limited to, the following components:

1. Flat Panel Touch Screen Display and mounting hardware.

2. Blueray player.

3. Speakers and back boxes.

4. Microphones.

B. Inputs components: The flat panel display shall allow input from the following A/V sources.

1. Blu-Ray players.

2. Microphones.

C. The user shall be able to control all functions from the Flat Panel TV. Control functions include, but are not limited to the following:

1. Input selection.

2. Blueray player function.

3. Audio output and volume control.

1.04 SUBMITTALS

A. Prior approval information shall be submitted to the Government no later than ten (10) days prior to the bid date for review.

B. SPECIAL DOCUMENTATION: “BUY AMERICAN ACT.” All products and materials used on this project shall meet the requirements of the “Buy American Act”. Proof of this requirement shall be furnished with all submittals and shall be included in the O&M manual. Documentation for items not required for formal submittal shall be made available upon request.

C. Submit Shop Drawings in accordance with requirements of Section 26-05-00. In addition, shop drawings shall include:

1. Wiring diagrams for a complete wiring of all components and the system

2. Cable requirements

D. Provide shop drawing information and additional maintenance information for operation and maintenance manuals in accordance with Section 26-05-00.

1.05 QUALITY ASSURANCE

A. Installer shall be an authorized representative of equipment manufacturer and be experienced with both installation and maintenance of equipment specified herein.

B. Equipment shall be listed and labeled and comply with all applicable requirements of the following:

1. NFPA 70 (National Electrical Code).

2. UL.

3. FCC.

4. ANSI.

C. All audio/visual equipment shall be provided from a single source.

D. Warranty period: products and workmanship shall be warranted for a period of one year from date of substantial completion.

PART 2 - PRODUCTS

2.01 SPECIAL PROVISIONS

A. BUY AMERICAN ACT: All products and materials used on this project shall meet the requirements of the “Buy American Act”. Proof of this requirement shall be furnished with all submittals and shall be included in the O&M manual. Documentation for items not required for formal submittal shall be made available upon request.

2.02 GENERAL

A. Provide products as specified and supplied by the following:

1. Tierney Brothers, www.tierneybrothers.com, 612-331-5500.

B. Products shall be compatible and operate together without conflict.

2.03 VIDEO INPUT

A. BluRay Player: Denon DBT-1713UD.

1. Quantity: 1.

2. Rack mountable.

2.04 AUDIO INPUT

A. Amplifier: Rack mountable.

1. Specifications:

http://www.tierneybrothers.com/

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a) Minimum guaranteed power into 4-ohms or 70/100V output: 80-watts maximum power at 1 kHz with 5% THD.

b) Frequency Response (at 1-watt from 4-ohm tap): 70 Hz – 19 kHz +/- 1 dB.

c) Frequency Response (at line out): 20 Hz to 20 kHz +/- 1 dB.

d) Power Bandwidth (at 4-ohm tap, 2 dB below maximum 1 kHz power): 50 Hz to 20 kHz with < 0.5% THD.

e) Signal to Noise Ratio (ref. to rated power, master volume at minimum): 85 dB.

f) DC Output Offset: < +/-5mV.

g) Total Harmonic Distortion: Less than 0.5% at rated power at 1 kHz.

h) Input Sensitivity (for full output at maximum gain): 800 mV.

i) Input Impedance (nominal): 100 kilohms.

j) Minimum Load Impedance: 100V output 160 ohms, 70V output 80 ohms, 4-ohm output 4/8 ohms.

k) Crosstalk: -70 dB at 1 kHz.

l) Line Output Level (nominal): 1V into 10 kilohms.

m) Unit shall operate at 120-volt, 60 Hz.

2. Rear Panel Controls and Connectors include, but are not limited to:

a) Reset button.

b) AC power inlet.

c) Output connectors: One per channel, 4-position terminal strip with COM, 4-ohms, 70V and 100V terminals.

d) Output VCA Connector: 4-pin Phoenix-type connector for two VCA control lines of

+10 VDC and ground.

e) Line Out Connector: 3-pin balanced Phoenix-type connector per output channel.

f) Amp Input Connector: 3-pin Phoenix-type, high-impedance balanced, one per amplifier channel.

3. Basis of Design: Crown 280A.

B. Speakers: Nominal 8-inch compact ceiling speaker providing premium performance in background, foreground music sound systems.

1. Specifications:

a) Frequency Range (-10 dB): 75 Hz – 20 kHz.

b) Power Capacity: 150-watts continuous program power, 75-watts continuous pink noise.

c) Nominal Sensitivity: 89 dB SPL, 1W at 1-meter.

d) Nominal Coverage Angle: 110-degrees conical coverage.

e) Directivity Factor: 5.9 averaged 500 Hz to 4 kHz.

f) Directivity Index: 4.6 averaged 500 Hz to 4 kHz.

g) Rated Maximum SPL: 107 dB at 1-meter.

h) Nominal Impedance: 16 ohms.

i) Transformer Taps: 70V: 60W, 30W, 15W, 7.5W; 100V: 60W, 30W, 15W.

2. Transducers:

a) Low-Frequency: 165mm Polypropylene coated 1” coil on aluminum former.

b) High-Frequency: 19mm Titanium coated polyester.

3. Housing: Formed steel back can with medium impact polystyrene, fire rated UL945V-O baffle.

4. Overload Protection: Full-range power limiting to protect network and transducers.

5. Mounting accessories shall be provided.

6. Basis of Design: JBL Control 26C/CT.

C. Microphones: Wireless system shall operate in the UHF band between 524 MHz and 865 Mhz.

1. Characteristics:

a) Operating Range: 100-meters (300 feet).

b) Audio Frequency Response (+/- 2 dB): 45 Hz to 15 kHz.

c) Total Harmonic Distortion: 0.5% typical.

d) Dynamic Range: 100 dB A-weighted.

2. An infrared signal beamed from the receiver shall be used to synchronize the frequency between the transmitter and receiver. The process of synchronizing the system shall be simple and instantaneous.

3. Transmitters shall have a power on-off/mute switch, timed backlit LCD showing frequency group and channel, locked/unlocked status, and battery strength.

4. The receiver shall have a multi-function display showing group, channel, frequency, transmitter battery strength, and locked/unlocked status.

5. Basis of Design:

a) Wireless Bodypack and receiver: Shure SLX14-G4, quantity 1.

b) Lavalier Microphone: Shure WL183, quantity 1.

c) Handheld Microphone and Receiver: Shure SLX24/SM58-G4, quantity 1.

2.05 CABLE

A. Cable shall be plenum rated.

B. Provide cable as required for system.

C. Acceptable manufacturers include:

1. Crestron Cresnet.

2. West Penn.

3. Belden.

2.06 AV RACK

A. Floor Standing

B. Rack spacing: As required by components.

C. Dimensions:

1. Height: As required by components.

2. Depth: 18.25” Usable.

3. Width: Minimum 21”.

D. Construction: Steel

E. Maximum Load Support: 1000lbs for size 35U and above, 750lbs for size 27U and below

F. Finish: Black Powder Coated

G. Accessories:

1. Lockable Front Door

2. Locking Floor Casters

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PART 3 - EXECUTION

3.01 INSTALLATION

A. Install all equipment per manufacturers requirements. Field coordinate exact locations of speakers with other equipment in ceiling.

B. Install and terminate wire at speaker units and at head-end equipment. Wire not installed in conduit in accessible ceiling space shall be properly strapped.

C. Make cable shields continuous at splices and connect speaker circuit shield to equipment ground only at amplifier.

D. Install input circuits in separate cables and raceways from output circuits.

E. Leave 18-inches of excess cable at each termination at microphone, volume control, speaker, and other system outlet.

F. Leave 6-feet of excess cable at each termination at system cabinet.

G. Ground and bond equipment and circuits in accordance with Section 26-05-26 and in compliance with NEC.

H. Install with flat panel display in accordance with Section 27-41-50.

I. Coordinate rough-in framing to ensure that wall can properly support the weight of the television wall mount bracket and flat panel television.

J. Install all cabling and connect components in accordance with these specifications, drawings, and manufacturer’s recommendations.

3.02 COMMISSIONING

A. Perform field inspection and testing of components and system for proper operation. Correct deficiencies and make adjustments until system is operating properly. Re-test system.

1. Testing shall be in accordance with manufacturer’s recommendations.

B. Include operations, programming, and maintenance information for the Operations and

Maintenance manuals. Same information shall be included in each manual.

C. Demonstration: Demonstrate operation of system to USFWS Representative and Government.

Describe function, operation, and maintenance of each component.

D. Training: A factory authorized representative shall train USFWS personnel on the various functions of the system. Provide a minimum of two – four-hour sessions for training, one at project substantial completion and a second training to be scheduled by USFWS but not more than 60 days after substantial completion. Training shall occur at the project site.

END OF SECTION