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Guide Specifications • Wireless Induction Loop Hearing Assistance System
Guide Specification
Wi-Fi Hearing Assistance System
SECTION 27 41 16.xx
RADIO COMMUNICATION SYSTEM & EQUIPMENT
WI-FI HEARING ASSISTANCE SYSTEM
This document is intended to aid the specifier in developing a specification section for a Williams Sound In duction Wi-Fi
Listening System for use in churches, schools, auditoriums, conference rooms, and theaters.
Edit this master specification to suit your project requirements. Modify or add items as necessary. Delete items, which are
not applicable. Words and sentences within brackets [
] reflect a choice to be made regarding inclusion or exclusion
of a particular item or statement.
This guide specification is based on the Construction Specifications Institute (CSI), Section Format standards.
References to section names and numbers are based on MasterFormat 2004.
For specification questions, assistance with systems integration and specific product options contact:
Williams Sound LLC
10300 Valley View Rd
Eden Prairie, MN 55344
Ph: 800-328-6190 / 952-943-2252
FAX: 952-943-2174
www.williamssound.com
Williams Sound reserves the right to modify these guide specifications at any time. Updates to this guide specification will
be posted as they occur. Williams Sound makes no expressed or implied warranties regarding content, errors, or omissions
in the information presented. Specifications modified or rewritten in excess of supplier’s standard processes, products,
and procedures may void warranties and related remedies. Contact the office above regarding modifications and addition
of new text.
SPECIFICATIONs
1
MFS 104A
Guide Specifications • Wireless Induction Loop Hearing Assistance System
PART 2 PRODUCTS
PART 1 GENERAL
2.1 MANUFACTURERS
A. Acceptable Manufacturers:
1. Williams Sound, Eden Prairie, MN.
1.1 SUMMARY
A. Section Includes: Equipment for transmitting
sound signals for the hard of hearing, using Wi-Fi
signal technology.
B. Wi-Fi Systems shall be (or be expandable to) 32
mono/16 stereo audio channels, with graphical
content and channel list administered through a
Venue Portal (via the internet), and audio and
graphical content delivered to end devices over a
Wi-Fi connection.
C. System integration and performance depends
on existing IT system architecture, access points
used, wi-fi environment, and user end devices.
D. Users bring their own wi-fi-enabled devices to
listen to the system; i.e. phone, tablet, etc. with
earphones/headphones.
2.2 ACCEPTABLE PRODUCTS
A. Servers (Transmitters):
1. HHS 108
2. HHS 116
3. HHS 124
4. HHS 132
5. HHS 132 D
2.3 COMPONENT PERFORMANCE CRITERIA
1.2 SUBMITTALS
A. General: Submit in accordance with Section
01330.
B. Product Data: For each specific piece of
equipment.
C. Shop Drawings: Detail equipment assemblies
and indicate dimensions, weights, required
clearances, method of field assembly, components,
and location of each field connection.
D. Closeout Submittals:
Submit following in
accordance with Section 01780.
1. Operation and Maintenance Data: For
equipment.
1.3 QUALITY ASSURANCE
A. Installer Qualifications: Experienced installer
must have some IT experience and is an
authorized representative of the equipment
manufacturer
for
both
installation
and
maintenance of equipment required for this
Section.
B. Electrical Components, Devices, and
Accessories: Listed and labeled as defined in
NFPA 70, Article 100, by testing agency
acceptable to authorities having jurisdiction.
C. Comply with NFPA 70.
D. Comply with UL 50.
1.4 WARRANTY
A. Warrant products in system to be free of defects
in operation for 2 years, including parts and labor.
Warranty for cords, external power supplies and
accessories is 90 days.
9.
10.
11.
12.
2
A1. 8-Channel Mono / 4-Channel Stereo Wi-Fi Audio
System
(HHS 108):
1. Physical: Standard 2 RU 19” rackmount, 13” D
(deep rack required). Weight: 14.0 lbs (6.4 kg).
Color: black brushed aluminum face, case is
textured black. Blue backlit LCD Screen with dark
blue text. Power and control buttons backlit blue.
2. Environment: Storage: -40° F to 150° F (-40° C to
65° C); Operating: 30° F to 110° F (0° C to 45° C)
3. Cooling fan: 26 dB(A), variable speed,
temperature controlled.
4. Network requirements: Network hardware must
support IGMP, IGMP Snooping, multicast (multiple
simultaneous multicast clients), voice or higher
QOS, and have available bandwidth. Internet
access for maintenance updates and content
management through venue portal.
5. Mobile device requirements: Apple iOS 6 minimum,
Android 4.2 minimum
6. Expansion slots: (4x) sled style, to accept one 8channel analog input expansion module (HHS
CH8) each. Unused slots have blank plates
installed.
7. Audio inputs: Analog only. Accepts balanced or
unbalanced line level. Input range -10 dBV to +8
dBu. Inputs provided by 8-channel audio input
expansion module HHS CH8.
One module
provides 8 mono inputs, and each input has a 3position terminal block configured as +,C,-. Each
server unit can accept up to 4 expansion modules
or 32 mono/16 stereo input channels total.
8. Expansion card slots have (3x) blank plates
installed.
Ethernet jacks: (4x) RJ-45 jacks, 10/100/1000 Mbps,
provided by internal router, configured as the
following: (3x) LAN, (1x) WAN
USB port: Version 2.0 supported.
VGA port: Supported resolutions up to 2560 x 1600.
Headphone jack: 3.5 mm stereo jack, 35 mW, 33 Ω
MFS 104A
Guide Specifications • Wireless Induction Loop Hearing Assistance System
load.
13. Data transmission method: Proprietary Hearing
Hotspot software; Live streaming IP
14. Latency: Server native: µs range. Packet buffer
configured for 60 ms. Receiving devices: 100 ms
optimum.
15. Sampling rates supported: 48, 44.1 kHz at 24-bit
resolution
16. Audio bandwidth used: Ethernet (wired): No more than
8 kBps, per stream; Wi-Fi: No more than 12 kBps WiFi, per stream
17. Power: External desktop power supply required (TFP
051). Input: Universal 90-240 VAC, 50/60 Hz, 60 Watt.
Output:12 VDC, 4 A, 2.1 mm plug, center positive.
18. User control interface: LCD screen with Left, Right, Up,
Down and Select buttons. Each input can be adjusted
for pad (preset attenuation level), trim, level (volume),
and type (balanced mono, unbalanced mono,
unbalanced stereo). Output selectable as stereo or
mono. Input attenuation range adjustment ± 6 dB.
19. Application features: Channel naming, coupons,
advertising banners, scrolling ticker, custom
background, downloadable pdf’s.
20. Warranty: 2 years
21. Approvals: FCC, IC, CE, RCM, RoHS, WEEE. Safety
certifications (UL, CB scheme) pending,
or 32 mono/16 stereo input channels total.
8. Expansion card slots have (2x) blank plates
installed.
9. Ethernet jacks: (4x) RJ-45 jacks, 10/100/1000
Mbps, provided by internal router, configured as
the following: (3x) LAN, (1x) WAN
10. USB port: Version 2.0 supported.
11. VGA port: Supported resolutions up to 2560 x 1600.
12. Headphone jack: 3.5 mm stereo jack, 35 mW, 33
Ω load.
13. Data transmission method: Proprietary Hearing
Hotspot software; Live streaming IP
14. Latency: Server native: µs range. Packet buffer
configured for 60 ms. Receiving devices: 100 ms
optimum.
15. Sampling rates supported: 48, 44.1 kHz at 24-bit
resolution
16. Audio bandwidth used: Ethernet (wired): No more
than 8 kBps, per stream; Wi-Fi: No more than 12
kBps Wi-Fi, per stream
17. Power: External desktop power supply required
(TFP 051). Input: Universal 90-240 VAC, 50/60 Hz,
60 Watt. Output:12 VDC, 4 A, 2.1 mm plug, center
positive.
18. User control interface: LCD screen with Left, Right,
Up, Down and Select buttons. Each input can be
adjusted for pad (preset attenuation level), trim,
level (volume), and type (balanced mono,
unbalanced mono, unbalanced stereo). Output
selectable as stereo or mono. Input attenuation
range adjustment ± 6 dB.
19. Application features: Channel naming, coupons,
advertising banners, scrolling ticker, custom
background, downloadable pdf’s.
20. Warranty: 2 years
21. Approvals: FCC, IC, CE, RCM, RoHS, WEEE.
Safety certifications (UL, CB scheme) pending,
A2. 16 Channel Mono / 8-Channel Stereo Wi-Fi Audio
System
(HHS 116):
1. Physical: Standard 2 RU 19” rackmount, 13” D (deep
rack required). Weight: 14.0 lbs (6.4 kg). Color: black
brushed aluminum face, case is textured black. Blue
backlit LCD Screen with dark blue text. Power and
control buttons backlit blue.
2. Environment: Storage: -40° F to 150° F (-40° C to 65°
C); Operating: 30° F to 110° F (0° C to 45° C)
3. Cooling fan: 26 dB(A), variable speed, temperature
controlled.
4. Network requirements: Network hardware must
support IGMP, IGMP Snooping, multicast (multiple
simultaneous multicast clients), voice or higher QOS,
and have available bandwidth. Internet access for
maintenance updates and content management
through venue portal.
5. Mobile device requirements: Apple iOS 6 minimum,
Android 4.2 minimum
6. Expansion slots: (4x) sled style, to accept one 8channel analog input expansion module (HHS CH8)
each. Unused slots have blank plates installed.
7. Audio inputs: Analog only. Accepts balanced or
unbalanced line level. Input range -10 dBV to +8
dBu. Inputs provided by 8-channel audio input
expansion module HHS CH8.
One module
provides 8 mono inputs, and each input has a 3position terminal block configured as +,C,-. Each
server unit can accept up to 4 expansion modules
A3. 24 Channel Mono / 12-Channel Stereo Wi-Fi Audio
System
(HHS 124):
1. Physical: Standard 2 RU 19” rackmount, 13” D
(deep rack required). Weight: 14.0 lbs (6.4 kg).
Color: black brushed aluminum face, case is
textured black. Blue backlit LCD Screen with dark
blue text. Power and control buttons backlit blue.
2. Environment: Storage: -40° F to 150° F (-40° C to
65° C); Operating: 30° F to 110° F (0° C to 45° C)
3. Cooling fan: 26 dB(A), variable speed,
temperature controlled.
4. Network requirements: Network hardware must
support IGMP, IGMP Snooping, multicast (multiple
simultaneous multicast clients), voice or higher
QOS, and have available bandwidth. Internet
access for maintenance updates and content
management through venue portal.
5. Mobile device requirements: Apple iOS 6 minimum,
3
MFS 104A
Guide Specifications • Wireless Induction Loop Hearing Assistance System
Android 4.2 minimum
6. Expansion slots: (4x) sled style, to accept one 8channel analog input expansion module (HHS
CH8) each. Unused slots have blank plates
installed.
7. Audio inputs: Analog only. Accepts balanced or
unbalanced line level. Input range -10 dBV to +8
dBu. Inputs provided by 8-channel audio input
expansion module HHS CH8.
One module
provides 8 mono inputs, and each input has a 3position terminal block configured as +,C,-. Each
server unit can accept up to 4 expansion modules
or 32 mono/16 stereo input channels total.
8. Expansion card slots have (1x) blank plates
installed.
9. Ethernet jacks: (4x) RJ-45 jacks, 10/100/1000
Mbps, provided by internal router, configured as
the following: (3x) LAN, (1x) WAN
10. USB port: Version 2.0 supported.
11. VGA port: Supported resolutions up to 2560 x 1600.
12. Headphone jack: 3.5 mm stereo jack, 35 mW, 33
Ω load.
13. Data transmission method: Proprietary Hearing
Hotspot software; Live streaming IP
14. Latency: Server native: µs range. Packet buffer
configured for 60 ms. Receiving devices: 100 ms
optimum.
15. Sampling rates supported: 48, 44.1 kHz at 24-bit
resolution
16. Audio bandwidth used: Ethernet (wired): No more
than 8 kBps, per stream; Wi-Fi: No more than 12
kBps Wi-Fi, per stream
17. Power: External desktop power supply required
(TFP 051). Input: Universal 90-240 VAC, 50/60 Hz,
60 Watt. Output:12 VDC, 4 A, 2.1 mm plug, center
positive.
18. User control interface: LCD screen with Left, Right,
Up, Down and Select buttons. Each input can be
adjusted for pad (preset attenuation level), trim,
level (volume), and type (balanced mono,
unbalanced mono, unbalanced stereo). Output
selectable as stereo or mono. Input attenuation
range adjustment ± 6 dB.
19. Application features: Channel naming, coupons,
advertising banners, scrolling ticker, custom
background, downloadable pdf’s.
20. Warranty: 2 years
21. Approvals: FCC, IC, CE, RCM, RoHS, WEEE.
Safety certifications (UL, CB scheme) pending,
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
A4. 32 Channel Mono / 16-Channel Stereo Wi-Fi Audio
System
(HHS 132):
1. Physical: Standard 2 RU 19” rackmount, 13” D
(deep rack required). Weight: 14.0 lbs (6.4 kg).
Color: black brushed aluminum face, case is
19.
4
textured black. Blue backlit LCD Screen with dark
blue text. Power and control buttons backlit blue.
Environment: Storage: -40° F to 150° F (-40° C to
65° C); Operating: 30° F to 110° F (0° C to 45° C)
Cooling fan: 26 dB(A), variable speed,
temperature controlled.
Network requirements: Network hardware must
support IGMP, IGMP Snooping, multicast (multiple
simultaneous multicast clients), voice or higher
QOS, and have available bandwidth. Internet
access for maintenance updates and content
management through venue portal.
Mobile device requirements: Apple iOS 6 minimum,
Android 4.2 minimum
Expansion slots: (4x) sled style, to accept one 8channel analog input expansion module (HHS
CH8) each. Unused slots have blank plates
installed.
Audio inputs: Analog only. Accepts balanced or
unbalanced line level. Input range -10 dBV to +8
dBu. Inputs provided by 8-channel audio input
expansion module HHS CH8.
One module
provides 8 mono inputs, and each input has a 3position terminal block configured as +,C,-. Each
server unit can accept up to 4 expansion modules
or 32 mono/16 stereo input channels total.
Expansion card slots have (0x) blank plates
installed.
Ethernet jacks: (4x) RJ-45 jacks, 10/100/1000
Mbps, provided by internal router, configured as
the following: (3x) LAN, (1x) WAN
USB port: Version 2.0 supported.
VGA port: Supported resolutions up to 2560 x 1600.
Headphone jack: 3.5 mm stereo jack, 35 mW, 33
Ω load.
Data transmission method: Proprietary Hearing
Hotspot software; Live streaming IP
Latency: Server native: µs range. Packet buffer
configured for 60 ms. Receiving devices: 100 ms
optimum.
Sampling rates supported: 48, 44.1 kHz at 24-bit
resolution
Audio bandwidth used: Ethernet (wired): No more
than 8 kBps, per stream; Wi-Fi: No more than 12
kBps Wi-Fi, per stream
Power: External desktop power supply required
(TFP 051). Input: Universal 90-240 VAC, 50/60 Hz,
60 Watt. Output:12 VDC, 4 A, 2.1 mm plug, center
positive.
User control interface: LCD screen with Left, Right,
Up, Down and Select buttons. Each input can be
adjusted for pad (preset attenuation level), trim,
level (volume), and type (balanced mono,
unbalanced mono, unbalanced stereo). Output
selectable as stereo or mono. Input attenuation
range adjustment ± 6 dB.
Application features: Channel naming, coupons,
advertising banners, scrolling ticker, custom
MFS 104A
Guide Specifications • Wireless Induction Loop Hearing Assistance System
background, downloadable pdf’s.
20. Warranty: 2 years
21. Approvals: FCC, IC, CE, RCM, RoHS, WEEE.
Safety certifications (UL, CB scheme) pending,
18.
A5. 32 Channel Dante Wi-Fi Audio System
(HHS 132 D):
1. Physical: Standard 2 RU 19” rackmount, 13” D
(deep rack required). Weight: 14.0 lbs (6.4 kg).
Color: black brushed aluminum face, case is
textured black. Blue backlit LCD Screen with dark
blue text. Power and control buttons backlit blue.
2. Environment: Storage: -40° F to 150° F (-40° C to
65° C); Operating: 30° F to 110° F (0° C to 45° C)
3. Cooling fan: 26 dB(A), variable speed,
temperature controlled.
4. Network requirements: Network hardware must
support IGMP, IGMP Snooping, multicast (multiple
simultaneous multicast clients), voice or higher
QOS, and have available bandwidth. Internet
access for maintenance updates and content
management through venue portal.
5. Mobile device requirements: Apple iOS 6 minimum,
Android 4.2 minimum
6. Expansion slots: (4x) sled style, to accept one 8channel analog input expansion module (HHS
CH8) each. Unused slots have blank plates
installed.
7. Audio inputs: Analog only. Accepts balanced or
unbalanced line level. Input range -10 dBV to +8
dBu. Inputs provided by 8-channel audio input
expansion module HHS CH8.
One module
provides 8 mono inputs, and each input has a 3position terminal block configured as +,C,-. Each
server unit can accept up to 4 expansion modules
or 32 mono/16 stereo input channels total.
8. Expansion card slots have (0x) blank plates
installed.
9. Ethernet jacks: (4x) RJ-45 jacks, 10/100/1000
Mbps, provided by internal router, configured as
the following: (3x) LAN, (1x) WAN
10. USB port: Version 2.0 supported.
11. VGA port: Supported resolutions up to 2560 x 1600.
12. Headphone jack: 3.5 mm stereo jack, 35 mW, 33
Ω load.
13. Data transmission method: Proprietary Hearing
Hotspot software; Live streaming IP
14. Latency: Server native: µs range. Packet buffer
configured for 60 ms. Receiving devices: 100 ms
optimum.
15. Sampling rates supported: 48, 44.1 kHz at 24-bit
resolution
16. Audio bandwidth used: Ethernet (wired): No more
than 8 kBps, per stream; Wi-Fi: No more than 12
kBps Wi-Fi, per stream
17. Power: External desktop power supply required
(TFP 051). Input: Universal 90-240 VAC, 50/60 Hz,
19.
20.
21.
60 Watt. Output:12 VDC, 4 A, 2.1 mm plug, center
positive.
User control interface: LCD screen with Left, Right,
Up, Down and Select buttons. Each input can be
adjusted for pad (preset attenuation level), trim,
level (volume), and type (balanced mono,
unbalanced mono, unbalanced stereo). Output
selectable as stereo or mono. Input attenuation
range adjustment ± 6 dB.
Application features: Channel naming, coupons,
advertising banners, scrolling ticker, custom
background, downloadable pdf’s.
Warranty: 2 years
Approvals: FCC, IC, CE, RCM, RoHS, WEEE.
Safety certifications (UL, CB scheme) pending,
PART 3 EXECUTION
3.1 INSTALLATION
A. Install equipment to comply with manufacturer’s
recommendations.
B. Wiring within Enclosures: Bundle, lace, and
train conductors to terminal points with typical
service loops, no excess. Use lacing bars in
cabinets.
3.2 GROUNDING
A. Ground cable shields and equipment to
eliminate shock hazard and to minimize ground
loops, common-mode returns, noise pickup, cross
talk, and other impairments.
3.3 FIELD QUALITY CONTROL
A. Operational Test: Perform tests that confirm
proper operation of system and proper coverage in
area where equipment will be used. System must
meet IEC 60118-4 standard.
3.4 DEMONSTRATION
A. Demonstration and Instruction of Owner’s
Personnel: Provide in accordance with Section
01800.
Engage factory-authorized service
representative to train Owner’s maintenance
personnel to adjust, operate, and maintain
equipment as specified.
END OF SECTION
10300 Valley View Rd
Eden Prairie, MN 55344
Ph: 800-328-6190 / 952-943-2252
FAX: 952-943-2174
Email: [email protected]
5
MFS 104A