SECTION 27 51 16.08
PUBLIC ADDRESS SYSTEMS
Equipment Specified in this section:
CEILING SPEAKERS TYPE 1: Crestron SAROS IC4T
CEILING SPEAKERS TYPE 2: Crestron SAROS IC6T
CEILING SPEAKERS TYPE 3: Crestron SAROS IC8T
SURFACE MOUNT SPEAKERS TYPE 1: Crestron SAROS SR4T
SURFACE MOUNT SPEAKERS TYPE 2: Crestron SAROS SR6T
SURFACE MOUNT SPEAKERS TYPE 3: Crestron SAROS SR8T
Table of Contents
PART 1 GENERAL .................................................................................................................... 4
1.1 SUMMARY ..............................................................................................................................4
A. Section Includes ....................................................................................................................4
B. Related Requirements............................................................................................................4
1.2 REFERENCES ..........................................................................................................................5
A. DEFINITIONS ........................................................................................................................5
1.3 EQUIPMENT DATA SUBMITTALS ..............................................................................................5
A. System Drawings ..................................................................................................................5
B. Design Data ..........................................................................................................................5
C. Speaker Layout Drawing ........................................................................................................5
D. Technical Literature ...............................................................................................................5
E. Engineering Drawings ............................................................................................................5
1.4 PROJECT RECORD DOCUMENTS ..............................................................................................6
A. Project Record Documents .....................................................................................................6
B. As-Built Drawings ..................................................................................................................6
1.5 CLOSEOUT SUBMITTALS .........................................................................................................6
A. Contractor Closeout Submittals ..............................................................................................6
1.6 DELIVERY, STORAGE, AND HANDLING .....................................................................................6
A. Delivery ................................................................................................................................6
B. Storage.................................................................................................................................6
C. Site Management ..................................................................................................................6
1.7 PROJECT CLOSEOUT CONDITIONS ..........................................................................................6
A. Site Closeout Conditions ........................................................................................................6
PART 2 PRODUCTS ................................................................................................................. 7
2.1 INSTALLED LOUDSPEAKERS ....................................................................................................7
A. Manufacturers .......................................................................................................................7
2.2 CEILING SPEAKER TYPE 1:.......................................................................................................7
A. Basis of Design Product: ........................................................................................................7
B. Description: ..........................................................................................................................7
C. Performance: ........................................................................................................................7
2.3 CEILING SPEAKER TYPE 2:.......................................................................................................9
A. Basis of Design Product: ........................................................................................................9
B. Description: ..........................................................................................................................9
C. Performance: ........................................................................................................................9
2.4 CEILING SPEAKER TYPE 3:..................................................................................................... 11
A. Basis of Design Product: ...................................................................................................... 11
B. Description: ........................................................................................................................ 11
C. Performance: ...................................................................................................................... 11
2.5 SURFACE MOUNT SPEAKER TYPE 1: ....................................................................................... 13
A. Basis of Design Product: ...................................................................................................... 13
B. Description: ........................................................................................................................ 13
C. Performance: ...................................................................................................................... 13
2.6 SURFACE MOUNT SPEAKER TYPE 2: ....................................................................................... 15
A. Basis of Design Product: ...................................................................................................... 15
B. Description: ........................................................................................................................ 15
C. Performance: ...................................................................................................................... 15
2.7 SURFACE MOUNT SPEAKER TYPE 3: ....................................................................................... 17
A. Basis of Design Product: ...................................................................................................... 17
B. Description: ........................................................................................................................ 17
C. Performance: ...................................................................................................................... 17
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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PART 3 EXECUTION .............................................................................................................. 19
3.1 PROJECT MANAGEMENT ........................................................................................................ 20
A. Project Manager .................................................................................................................. 20
3.2 COORDINATION WITH OTHER TRADES .................................................................................. 20
A. Cable Coordination .............................................................................................................. 20
B. Hardware Coordination ........................................................................................................ 20
3.3 INSTALLATION ..................................................................................................................... 20
A. General............................................................................................................................... 20
END OF SECTION 25 51 16.08 ................................................................................................. 20
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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25 51 16
SECTION 27 51 16.08
PUBLIC ADDRESS SYSTEMS - SPEAKERS
Specifier: The Specifier/Design Professional is responsible for the accuracy of all project specifications,
including system application and coordination with related sections. This guide specification is provided
as a convenience and requires editing to match actual project requirements. CRESTRON ELECTRONICS,
INC. SHALL NOT BE LIABLE FOR ANY DAMAGES ARISING OUT OF THE USE OF ANY OF ITS GUIDE
SPECIFICATIONS. For Crestron design assistance and design review please contact Sales Support Services Department at 800.237.2041 or techsales@crestron.com.
PART 1
1.1
GENERAL
SUMMARY
A.
B.
Section Includes
1.
Ceiling and surface mounted speakers.
2.
The products shall be delivered free of engineering, manufacturing, installation,
and functional defects.
3.
The term “provide”, as used herein, shall be defined as: designed, engineered,
furnished, installed, certified, and tested, by the Contractor.
4.
Specification Order of Precedence: In the event of a conflict between the text of
this document and the Project’s Contract Drawings outlined and/or cited herein;
CONTACT A/E FOR DIRECTION.
Related Requirements
1.
01 33 23 – Shop Drawings, Product Data and Samples.
2.
06 10 00 – Rough Carpentry
3.
09 20 00 – Plaster and Gypsum Board
4.
09 50 00 – Ceilings
5.
07 84 00 – Firestopping.
6.
25 13 16 – Integrated Automation Control and Monitoring Network Integration
Panels.
7.
25 90 00 – Integrated Automation Control Sequences.
8.
26 05 21 – Low – Voltage Electrical Power Conductors and Cables (600 Volts and
Below).
9.
26 41 00 – Facility Lightning Protection.
10.
27 05 11 – Requirements for Communications Installations.
11.
27 05 26 – Grounding and Bonding for Communications Systems.
12.
27 05 33 – Raceways and Boxes for Communications Systems.
13.
27 10 00 – Structured Communications Cabling Equipment and Systems.
14.
27 11 00 – Communications Cabling Interface and Equipment Rooms Fittings.
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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15.
27 15 00 – Horizontal and Vertical Communications Cabling Equipment and
Systems.
Specifier: This section includes system speakers only, refer to Section 27 51 16 for amplifiers,
switchers, source equipment and other required audio system equipment.
16.
1.2
REFERENCES
A.
1.3
27 51 16 – Public Address Systems.
DEFINITIONS
1.
Provide: Design, engineer, furnish, install, connect complete, test, certify and
guarantee.
2.
Work: Materials furnished and completely installed.
EQUIPMENT DATA SUBMITTALS
Specifier: Edit paragraphs below to correspond to Project requirements.
Specifier: Paragraph below requires Contractor to submit product information and certify compliance with contract documents (requirements specified in this section and other sections).
A.
System Drawings
Submit at one time within [10] days of contract awarding, drawings and product data on
all proposed equipment and system. Check for compliance with contract documents.
Specifier: Paragraphs below refer to Submittals of the “List” type, multiple lists for each listed
location. Edit to correspond to Project requirements.
B.
Design Data
Provide interconnection methods, conduit, junction boxes, cable, interface fixtures and
equipment lists for the:
1.
AV Equipment Rooms
2.
Head End Room
3.
Audio-Video Systems Infrastructure Plant
C.
Speaker Layout Drawing
Speaker layout drawing, as they are to be installed and interconnected to each other and
head end equipment.
D.
Technical Literature
Equipment manufacturer technical literature detailing the electrical and technical
characteristics of each item of equipment to be furnished.
E.
Engineering Drawings
Engineering drawings of the Speaker System, showing calculations of expected signal
levels at the headend output, each input and output distribution point, signal level at
each speaker input and SPL at speaker locations.
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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1.4
PROJECT RECORD DOCUMENTS
Specifier: Edit paragraphs below to correspond to Project requirements.
A.
Project Record Documents
Throughout progress of the Work, maintain an accurate record of changes in Contract
Documents. Upon completion of Work, transfer recorded changes to a set of Project
Record Documents.
B.
As-Built Drawings
Upon completion of Work, transfer recorded changes to a set of Project Record
Documents (As-Built Drawings), including:
1.
Floorplans
The floorplans shall include the following:
1.5
a.
Conduit locations.
b.
Head-end location.
c.
Each speaker and termination location.
d.
System test results.
CLOSEOUT SUBMITTALS
Specifier: Edit paragraphs below to correspond to Project requirements.
A.
1.6
Contractor Closeout Submittals
Before the project closeout date, the Contractor shall submit:
1.
System design documentation.
2.
System component instruction manuals.
DELIVERY, STORAGE, AND HANDLING
Specifier: Edit paragraphs below to correspond to Project requirements.
1.7
A.
Delivery
Deliver, store, and handle products using means and methods that will prevent damage,
deterioration, and loss, including theft.
B.
Storage
Store products in original containers.
C.
Site Management
Do not install damaged products. Remove damaged products from the site and replace
with new product at no cost to the Owner.
PROJECT CLOSEOUT CONDITIONS
A.
Site Closeout Conditions
Prior to final inspection and acceptance of the work, remove all tools, debris, rubbish,
and surplus materials from the project site and thoroughly clean your work area.
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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PART 2
2.1
PRODUCTS
INSTALLED LOUDSPEAKERS
A.
Manufacturers
1.
2.2
Basis-of-Design Manufacturer: Subject to compliance with requirements, provide
products of Crestron Electronics, Inc., Rockleigh, NJ 07647, Phone 800-2372041, Fax: 201-767-1903, www.crestron.com [or comparable products from a
single manufacturer approved by Architect prior to bidding], with the following
components and characteristics.
CEILING SPEAKER TYPE 1:
A.
Basis of Design Product:
1.
B.
Description:
1.
C.
Crestron SAROS IC4T
Ceiling mounted 2-way speaker with the following specifications:
Performance:
1.
Sensitivity: 85 dB at one meter, with 1-W input.
2.
Frequency Response: Within plus or minus 3 dB from 60 to 20,000 Hz.
3.
Frequency Range: Within minus 10 dB from 45 to 20,000 Hz.
4.
Nominal Dispersion Angle: 110 degrees conical.
5.
Power Handling: 100 Watts Program at 8-Ohms.
6.
Speaker unit shall be equipped for Low Impedance 8-Ohm or High Impedance 70V
or 100V operation.
a.
7.
Accessible front mounted low impedance, high impedance selector switch.
High Impedance Line Transformer:
a.
b.
c.
Five level taps at 70V:
1)
1.88 Watts
2)
3.75 Watts
3)
7.5 Watts
4)
15 Watts
5)
30 Watts
Four level taps at 100V:
1)
3.75 Watts
2)
7.5 Watts
3)
15 Watts
4)
30 Watts
Low Impedance transformer by-passed:
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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1)
8-Ohms.
8.
Enclosures: Aluminum, plenum rated.
9.
Termination:
10.
11.
12.
13.
a.
4-pin screw down conductor terminal removable terminal block with speaker
input and parallel pass-through connections.
b.
Maximum wire size: 12 AWG.
c.
Conduit knockouts:
One 0.5-inch knockout.
2)
One 0.75-inch knockout.
Baffle:
a.
ABS UL94V-0 plastic.
b.
Low frequency ported.
Grille:
a.
Steel
b.
Frameless magnetically affixed with safety tether.
c.
Finish: Re-paintable, powder coated.
Mounting:
a.
Flush ceiling mount.
b.
Four integral mounting clamps.
c.
Maximum ceiling thickness: 2.4-inches.
d.
Cutout diameter: 7.7-inches.
e.
Minimum ceiling cavity depth: 6.9-inches.
Included Accessories:
a.
14.
1)
Support bridge for tile ceiling installation.
1)
Adjustable for off center installation.
2)
Collapsible design allowing bridge support to be inserted from below
ceiling.
Optional Accessories
a.
Safety Tether
15.
Have a minimum of two (2) safety wire installation points.
16.
Dimensions:
a.
Diameter: 8.53-inches.
b.
Depth: 7.13-inches.
17.
Weight: 7.1lb.
18.
Drivers:
a.
4-inch polypropylene woofer with steel basket
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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b.
.79-inch titanium dome tweeter
c.
Crossover Frequency: 2,000 Hz.
Specifier: Crestron Saros speakers utilize a tweeter protection method that does not require replacement of internal components. In the event of the tweeter being “overpowered” the protection device will limit power to the tweeter as long as the condition
exists. Many competitor speakers utilize a fuse or fuse-bulb type component, which is
capable of absorbing some over-limit power, but will eventually rupture, requiring the entire unit to be removed and disassemble for replacement of the fuse/fuse-bulb.
19.
Driver Protection:
a.
Integral tweeter protection circuit.
1)
b.
2.3
Self-resetting protection device.
Speakers utilizing driver protection methods requiring physical replacement
of ruptured protection components including but not limited to, fuses or
fuse bulbs shall not be accepted.
CEILING SPEAKER TYPE 2:
A.
Basis of Design Product:
1.
B.
Description:
1.
C.
Crestron SAROS IC6T
Ceiling mounted 2-way speaker with the following specifications:
Performance:
1.
Sensitivity: 88.5 dB at one meter, with 1-W input.
2.
Frequency Response: Within plus or minus 3 dB from 50 to 20,000 Hz.
3.
Frequency Range: Within minus 10 dB from 40 to 20,000 Hz.
4.
Nominal Dispersion Angle: 100 degrees conical.
5.
Power Handling: 125 Watts Program at 8-Ohms.
6.
Speaker unit shall be equipped for Low Impedance 8-Ohm or High Impedance 70V
or 100V operation.
a.
7.
Accessible front mounted low impedance, high impedance selector switch.
High Impedance Line Transformer:
a.
b.
Five level taps at 70V:
1)
3.75 Watts
2)
7.5 Watts
3)
15 Watts
4)
30 Watts
5)
60 Watts
Four level taps at 100V:
1)
7.5 Watts
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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c.
2)
15 Watts
3)
30 Watts
4)
60 Watts
Low Impedance transformer by-passed:
1)
8-Ohms.
8.
Enclosures: Aluminum, plenum rated.
9.
Termination:
10.
11.
12.
13.
a.
4-pin screw down conductor terminal removable terminal block with speaker
input and parallel pass-through connections.
b.
Maximum wire size: 12 AWG.
c.
Conduit knockouts:
One 0.5-inch knockout.
2)
One 0.75-inch knockout.
Baffle:
a.
ABS UL94V-0 plastic.
b.
Low frequency ported.
Grille:
a.
Steel
b.
Frameless magnetically affixed with safety tether.
c.
Finish: Re-paintable, powder coated.
Mounting:
a.
Flush ceiling mount.
b.
Four integral mounting clamps.
c.
Maximum ceiling thickness: 2.4-inches.
d.
Cutout diameter: 9.7-inches.
e.
Minimum ceiling cavity depth: 8.1-inches.
Included Accessories:
a.
14.
1)
Support bridge for tile ceiling installation.
1)
Adjustable for off center installation.
2)
Collapsible design allowing bridge support to be inserted from below
ceiling.
Optional Accessories
a.
Safety Tether
15.
Have a minimum of two (2) safety wire installation points.
16.
Dimensions:
a.
Diameter: 10.57-inches.
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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b.
Depth: 8.31-inches.
17.
Weight: 10.38 lb.
18.
Drivers:
a.
6.5-inch polypropylene woofer with steel basket
b.
.98-inch titanium dome tweeter
c.
Crossover Frequency: 2,500 Hz.
Specifier: Crestron Saros speakers utilize a tweeter protection method that does not require replacement of internal components. In the event of the tweeter being “overpowered” the protection device will limit power to the tweeter as long as the condition
exists. Many competitor speakers utilize a fuse or fuse-bulb type component, which is
capable of absorbing some over-limit power, but will eventually rupture, requiring the entire unit to be removed and disassemble for replacement of the fuse/fuse-bulb.
19.
Driver Protection:
a.
Integral tweeter protection circuit.
1)
b.
2.4
Self-resetting protection device.
Speakers utilizing driver protection methods requiring physical replacement
of ruptured protection components including but not limited to, fuses or
fuse bulbs shall not be accepted.
CEILING SPEAKER TYPE 3:
A.
Basis of Design Product:
1.
B.
Description:
1.
C.
Crestron SAROS IC8T
Ceiling mounted 2-way speaker with the following specifications:
Performance:
1.
Sensitivity: 90.5 dB at one meter, with 1-W input.
2.
Frequency Response: Within plus or minus 3 dB from 50 to 20,000 Hz.
3.
Frequency Range: Within minus 10 dB from 40 to 20,000 Hz.
4.
Nominal Dispersion Angle: 100 degrees conical.
5.
Power Handling: 150 Watts Program at 8-Ohms.
6.
Speaker unit shall be equipped for Low Impedance 8-Ohm or High Impedance 70V
or 100V operation.
a.
7.
Accessible front mounted low impedance, high impedance selector switch.
High Impedance Line Transformer:
a.
Five level taps at 70V:
1)
3.75 Watts
2)
7.5 Watts
3)
15 Watts
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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b.
c.
4)
30 Watts
5)
60 Watts
Four level taps at 100V:
1)
7.5 Watts
2)
15 Watts
3)
30 Watts
4)
60 Watts
Low Impedance transformer by-passed:
1)
8-Ohms.
8.
Enclosures: Aluminum, plenum rated.
9.
Termination:
10.
11.
12.
13.
a.
4-pin screw down conductor terminal removable terminal block with speaker
input and parallel pass-through connections.
b.
Maximum wire size: 12 AWG.
c.
Conduit knockouts:
One 0.5-inch knockout.
2)
One 0.75-inch knockout.
Baffle:
a.
ABS UL94V-0 plastic.
b.
Low frequency ported.
Grille:
a.
Steel
b.
Frameless magnetically affixed with safety tether.
c.
Finish: Re-paintable, powder coated.
Mounting:
a.
Flush ceiling mount.
b.
Four integral mounting clamps.
c.
Maximum ceiling thickness: 2.4-inches.
d.
Cutout diameter: 11.20-inches.
e.
Minimum ceiling cavity depth: 8.9-inches.
Included Accessories:
a.
14.
1)
Support bridge for tile ceiling installation.
1)
Adjustable for off center installation.
2)
Collapsible design allowing bridge support to be inserted from below
ceiling.
Optional Accessories
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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a.
Safety Tether
15.
Have a minimum of two (2) safety wire installation points.
16.
Dimensions:
a.
Diameter: 12.07-inches.
b.
Depth: 9.10-inches.
17.
Weight: 12.5 lb.
18.
Drivers:
a.
8-inch polypropylene woofer with steel basket
b.
.98-inch titanium dome tweeter
c.
Crossover Frequency: 2,500 Hz.
Specifier: Crestron Saros speakers utilize a tweeter protection method that does not require replacement of internal components. In the event of the tweeter being “overpowered” the protection device will limit power to the tweeter as long as the condition
exists. Many competitor speakers utilize a fuse or fuse-bulb type component, which is
capable of absorbing some over-limit power, but will eventually rupture, requiring the entire unit to be removed and disassemble for replacement of the fuse/fuse-bulb.
19.
Driver Protection:
a.
Integral tweeter protection circuit.
1)
b.
2.5
Self-resetting protection device.
Speakers utilizing driver protection methods requiring physical replacement
of ruptured protection components including but not limited to, fuses or
fuse bulbs shall not be accepted.
SURFACE MOUNT SPEAKER TYPE 1:
A.
Basis of Design Product:
1.
B.
Description:
1.
C.
Crestron SAROS SR4T
Surface mounted 2-way speaker with the following specifications:
Performance:
1.
Sensitivity: 89.5 dB at one meter, with 1-W input.
2.
Frequency Response: Within plus or minus 3 dB from 100 to 16,000 Hz.
3.
Frequency Range: Within minus 10 dB from 80 to 18,000 Hz.
4.
Power Handling: 100 Watts Program at 8-Ohms.
5.
Speaker unit shall be equipped for Low Impedance 8-Ohm or High Impedance 70V
or 100V operation.
a.
6.
Accessible rear mounted low impedance, high impedance selector switch.
High Impedance Line Transformer:
a.
Five level taps at 70V:
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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b.
c.
1)
1.88 Watts
2)
3.75 Watts
3)
7.5 Watts
4)
15 Watts
5)
30 Watts
Four level taps at 100V:
1)
3.75 Watts
2)
7.5 Watts
3)
15 Watts
4)
30 Watts
Low Impedance transformer by-passed:
1)
7.
8.
9.
10.
8-Ohms.
Enclosures:
a.
ABS plastic.
b.
Low frequency ported.
c.
Suitable for outdoor use.
Termination:
a.
4-pin screw down conductor terminal removable terminal block with speaker
input and parallel pass-through connections.
b.
Maximum wire size: 12 AWG.
Grille:
a.
Aluminum
b.
Finish: Re-paintable, powder coated.
Mounting:
a.
Speaker shall include an integral ball and socket bracket with the following
characteristics:
1)
Tools shall not be required for securely connecting speaker to wall
ball and socket joint.
2)
Positioning:
a)
b)
c)
3)
Bracket shall mounts to:
a)
b)
c)
d)
4)
Yaw: plus or minus 30 degrees.
Pitch: plus or minus 30 degrees.
Roll: plus or minus 360 degrees.
Solid flat vertical surface.
1-Gang electrical box.
BS 4662 electrical box.
DIN 49073 electrical box.
Bracket shall include a theft resistant security screw in addition to ball
and socket mechanism.
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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11.
b.
Speaker shall include a safety tether rigging point.
c.
Speakers without integrated, adjustable-position ball and socket mounting
brackets shall not be accepted.
Optional Accessories
a.
12.
Safety tether
Dimensions:
a.
Height: 8.67-inches.
b.
Width: 5.91-inches
c.
Depth: 6.55-inches.
13.
Weight: 5.9 lb.
14.
Drivers:
a.
4-inch polypropylene woofer with steel basket
b.
.79-inch titanium dome tweeter
c.
Crossover Frequency: 2,500 Hz.
Specifier: Crestron Saros speakers utilize a tweeter protection method that does not require replacement of internal components. In the event of the tweeter being “overpowered” the protection device will limit power to the tweeter as long as the condition
exists. Many competitor speakers utilize a fuse or fuse-bulb type component, which is
capable of absorbing some over-limit power, but will eventually rupture, requiring the entire unit to be removed and disassemble for replacement of the fuse/fuse-bulb.
15.
Driver Protection:
a.
Integral tweeter protection circuit.
1)
b.
2.6
Self-resetting protection device.
Speakers utilizing driver protection methods requiring physical replacement
of ruptured protection components including but not limited to, fuses or
fuse bulbs shall not be accepted.
SURFACE MOUNT SPEAKER TYPE 2:
A.
Basis of Design Product:
1.
B.
Description:
1.
C.
Crestron SAROS SR6T
Surface mounted 2-way speaker with the following specifications:
Performance:
1.
Sensitivity: 90 dB at one meter, with 1-W input.
2.
Frequency Response: Within plus or minus 3 dB from 90 to 16,000 Hz.
3.
Frequency Range: Within minus 10 dB from 70 to 18,000 Hz.
4.
Power Handling: 150 Watts Program at 8-Ohms.
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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5.
Speaker unit shall be equipped for Low Impedance 8-Ohm or High Impedance 70V
or 100V operation.
a.
6.
Accessible rear mounted low impedance, high impedance selector switch.
High Impedance Line Transformer:
a.
b.
c.
Five level taps at 70V:
1)
3.75 Watts
2)
7.5 Watts
3)
15 Watts
4)
30 Watts
5)
60 Watts
Four level taps at 100V:
1)
7.5 Watts
2)
15 Watts
3)
30 Watts
4)
60 Watts
Low Impedance transformer by-passed:
1)
7.
8.
9.
10.
8-Ohms.
Enclosures:
a.
ABS plastic.
b.
Low frequency ported.
c.
Suitable for outdoor use.
Termination:
a.
4-pin screw down conductor terminal removable terminal block with speaker
input and parallel pass-through connections.
b.
Maximum wire size: 12 AWG.
Grille:
a.
Aluminum
b.
Finish: Re-paintable, powder coated.
Mounting:
a.
Speaker shall include an integral ball and socket bracket with the following
characteristics:
1)
Tools shall not be required for securely connecting speaker to wall
ball and socket joint.
2)
Positioning:
a)
b)
c)
3)
Yaw: plus or minus 30 degrees.
Pitch: plus or minus 30 degrees.
Roll: plus or minus 360 degrees.
Bracket shall mounts to:
PUBLIC ADDRESS SYSTEMS - SPEAKERS
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a)
b)
c)
d)
4)
11.
Bracket shall include a theft resistant security screw in addition to ball
and socket mechanism.
b.
Speaker shall include a safety tether rigging point.
c.
Speakers without integrated, adjustable-position ball and socket mounting
brackets shall not be accepted.
Optional Accessories
a.
12.
Solid flat vertical surface.
1-Gang electrical box.
BS 4662 electrical box.
DIN 49073 electrical box.
Safety tether
Dimensions:
a.
Height: 11.19-inches.
b.
Width: 8.08-inches
c.
Depth: 6.75-inches.
13.
Weight: 8.3 lb.
14.
Drivers:
a.
6.5-inch polypropylene woofer with steel basket
b.
.98-inch titanium dome tweeter
c.
Crossover Frequency: 2,000 Hz.
Specifier: Crestron Saros speakers utilize a tweeter protection method that does not require replacement of internal components. In the event of the tweeter being “overpowered” the protection device will limit power to the tweeter as long as the condition
exists. Many competitor speakers utilize a fuse or fuse-bulb type component, which is
capable of absorbing some over-limit power, but will eventually rupture, requiring the entire unit to be removed and disassemble for replacement of the fuse/fuse-bulb.
15.
Driver Protection:
a.
Integral tweeter protection circuit.
1)
b.
2.7
Self-resetting protection device.
Speakers utilizing driver protection methods requiring physical replacement
of ruptured protection components including but not limited to, fuses or
fuse bulbs shall not be accepted.
SURFACE MOUNT SPEAKER TYPE 3:
A.
Basis of Design Product:
1.
B.
Description:
1.
C.
Crestron SAROS SR8T
Surface mounted 2-way speaker with the following specifications:
Performance:
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1.
Sensitivity: 91.5 dB at one meter, with 1-W input.
2.
Frequency Response: Within plus or minus 3 dB from 80 to 16,000 Hz.
3.
Frequency Range: Within minus 10 dB from 60 to 18,000 Hz.
4.
Power Handling: 200 Watts Program at 8-Ohms.
5.
Speaker unit shall be equipped for Low Impedance 8-Ohm or High Impedance 70V
or 100V operation.
a.
6.
Accessible rear mounted low impedance, high impedance selector switch.
High Impedance Line Transformer:
a.
b.
c.
Five level taps at 70V:
1)
3.75 Watts
2)
7.5 Watts
3)
15 Watts
4)
30 Watts
5)
60 Watts
Four level taps at 100V:
1)
7.5 Watts
2)
15 Watts
3)
30 Watts
4)
60 Watts
Low Impedance transformer by-passed:
1)
7.
8.
9.
10.
8-Ohms.
Enclosures:
a.
ABS plastic.
b.
Low frequency ported.
c.
Suitable for outdoor use.
Termination:
a.
4-pin screw down conductor terminal removable terminal block with speaker
input and parallel pass-through connections.
b.
Maximum wire size: 12 AWG.
Grille:
a.
Aluminum
b.
Finish: Re-paintable, powder coated.
Mounting:
a.
Speaker shall include an integral ball and socket bracket with the following
characteristics:
1)
Tools shall not be required for securely connecting speaker to wall
ball and socket joint.
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2)
Positioning:
a)
b)
c)
3)
Bracket shall mounts to:
a)
b)
c)
d)
4)
11.
Solid flat vertical surface.
1-Gang electrical box.
BS 4662 electrical box.
DIN 49073 electrical box.
Bracket shall include a theft resistant security screw in addition to ball
and socket mechanism.
b.
Speaker shall include a safety tether rigging point.
c.
Speakers without integrated, adjustable-position ball and socket mounting
brackets shall not be accepted.
Optional Accessories
a.
12.
Yaw: plus or minus 30 degrees.
Pitch: plus or minus 30 degrees.
Roll: plus or minus 360 degrees.
Safety tether
Dimensions:
a.
Height: 13.31-inches.
b.
Width: 9.57-inches
c.
Depth: 6.94-inches.
13.
Weight: 10.1 lb.
14.
Drivers:
a.
8-inch polypropylene woofer with steel basket
b.
.98-inch titanium dome tweeter
c.
Crossover Frequency: 2,000 Hz.
Specifier: Crestron Saros speakers utilize a tweeter protection method that does not require replacement of internal components. In the event of the tweeter being “overpowered” the protection device will limit power to the tweeter as long as the condition
exists. Many competitor speakers utilize a fuse or fuse-bulb type component, which is
capable of absorbing some over-limit power, but will eventually rupture, requiring the entire unit to be removed and disassemble for replacement of the fuse/fuse-bulb.
15.
Driver Protection:
a.
Integral tweeter protection circuit.
1)
b.
PART 3
Self-resetting protection device.
Speakers utilizing driver protection methods requiring physical replacement
of ruptured protection components including but not limited to, fuses or
fuse bulbs shall not be accepted.
EXECUTION
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3.1
PROJECT MANAGEMENT
Specifier: Edit the following article to correspond to project delivery method, i.e., contractor
shall report to A/E (Architect, Engineer, or consultant), owner, or other.
A.
3.2
Project Manager
Assign a single project manager to this project who will serve as the point of contact for
the A/E or owner.
COORDINATION WITH OTHER TRADES
Specifier: Edit or delete paragraphs below to correspond to Project requirements.
3.3
A.
Cable Coordination
Coordinate with the cabling contractor the location of the PA system termination
locations and access panels.
B.
Hardware Coordination
Before beginning work, verify the location, quantity, size and access for the following:
1.
Junction boxes, wall boxes, wire troughs, conduit stubs and other related
infrastructure for the systems.
2.
System components installed by others.
3.
Overhead supports and rigging hardware installed by others.
INSTALLATION
A.
General
1.
Execute work in accordance with National, State and local codes, regulations and
ordinances.
2.
Locate loudspeakers as shown on drawings, with minor changes not to exceed 12”
in any direction.
3.
Product Delivery, Storage and Handling:
a.
Delivery: Deliver materials to the job site in manufacturer’s original
unopened containers, clearly labeled with the manufacturer’s name and
equipment model numbers.
END OF SECTION 25 51 16.08
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