ADMINISTRATIONDEPARTMENT
Orig w/ ch 0
CED # ITEM DESCRIPTION Nov 16, 2005
1A00PUBLIC ADDRESS & MUSIC SYSTEM
(DESIGN AND SITE SURVEY)
1.GENERAL CHARACTERISITICS:
a.Conduct a site survey at a DeCA store or CDC to develop a design for a stand alone public address and music system including amplifiers, speakers, conduit, and wire.
b.Integrates paging interface with the existing installed telephone system.
c.Integrates mass notification interface with the existing installed mass notification system panel.
2.OPERATIONAL CHARACTERISTICS, BY COMPONENT:
- System requirements.
(1)Provide music system with AM/FM tuner, CD and dual cassette player. System features shall permit prerecorded announcements at different times as set by operator.
(2)System shall automatically mute background music during paging and announcements.
(3)Provides microphone input channel for recording programmed announcements and for immediate announcements.
(4)Provides preamplifiers and gain controls to balance all inputs.
(5)Provide all accessories and connections needed to receive paging input from the in-store telephone-intercom system.
(6)Provide all accessories and connections needed to receive paging input from the mass notification system. The mass notification system panel shall provide first priority input to the PA / Music system amplifiers, muting all other programs IAW UFC4-021-01.
(7)The PA/Music amplifiers and loudspeakers shall comply with NFPA 72 requirements for emergency voice announcements.
(8)Designed for electrical power supply of 110-130V / 60 Hz/ 1 Ph.
(9)System shall provide private intercom capability between any pair of handsets, and paging from any handset. Touch-type dialing handsets shall be provided where there is no available phone handset. A minimum of four private conversations simultaneously without interruption is required.
ADMINISTRATIONDEPARTMENT
Orig w/ ch 0
CED # ITEM DESCRIPTION Nov 16, 2005
1A00PUBLIC ADDRESS & MUSIC SYSTEM
(DESIGN AND SITE SURVEY)
b.Zoning requirements, provide separate zones for:
(1)The Sales and Checkout area. Provided with noise activated gain controller.
(2)The Administrative area to include front offices and manager offices.
(3)The Backroom areas; staging, processing rooms, product storage rooms, restrooms, locker rooms, breakrooms, etc.
(4)Paging and emergency announcements will be distributed to all zones.
(5)Programmed promotional announcements will be to the Sales and Checkout area zone, but may be omitted from the other two zones by selective switching at the control panel.
(6)Each of the three zones may individually receive selected background music input from any of the available sources by selective switching at the control panel.
c.Installation requirements.
(1)Furnished, installed, adjusted and commissioned by a contractor specializing in commercial sound systems with not less than 5 years experience with installing similar systems.
(2)A factory authorized service representative will inspect, test, and adjust field-assembled components and equipment installation, including connections.
(3)Perform system tests.
(a)Operational test that includes originating program and page messages at microphone outlets, preamplifier program inputs, Mass Notification inputs, and other inputs. Verify proper routing and volume levels and that system is free of noise and distortion.
(b)Signal-to-noise ratio test that measures signal to noise ratio of complete system at normal gains settings. Minimum acceptance ratio is 50 dB.
(c)Distortion test to measure distortion at normal gain settings and rated power. Maximum acceptable distortion at any frequency is 3 percent total harmonics.
(d)Acoustic coverage test to measure sound level at five locations in each zone. For spaces with seated audiences variation not to exceed plus or minus 2dB. In addition, the levels between locations in the same zone and between locations in adjacent zones must not vary more than plus or minus 3 dB.
ADMINISTRATIONDEPARTMENT
Orig w/ ch 0
CED # ITEM DESCRIPTION Nov 16, 2005
1A00PUBLIC ADDRESS & MUSIC SYSTEM
(DESIGN AND SITE SURVEY)
(e)Power output test with maximum power output at 50, 1000, and 12,000 Hz not to exceed plus or minus 1 dB.
(f)Signal ground test to measure ground resistance at public address equipment signal ground to meet manufacturers normal standards.
(4)Provide operators familiarization training to two designated store personnel to adjust, operate, and maintain public address and music equipment.
d.Equipment components coordinated to form an integrated system. Modular type components using solid-state electronics fully rated for continuous duty.
(1)Tape cassette deck. Rack mounted, auto-reverse cassette dual tape deck, capable of recording and playing standard audio cassettes at 1-7/8 i.p.s. tape speed. Audio quality commensurate with the remainder of the sound system.
(2)CD player deck. Rack mounted, five-cd changer for playing audio compact discs. Audio quality commensurate with the remainder of the sound system.
(3)AM/FM tuner. Rack-mounted, with manual and signal-seeking tuning for the standard AM and FM broadcast bands. Sensitivity and audio quality commensurate with that of the remainder of the sound system.
(4)Programmed pre-recorded promotional announcement unit. Rack mounted digital recorder for recording promotional announcements from microphone or downloading from cassette tape input; capable of programmed playback of selected announcements from non-volatile memory at predetermined times over the Music/PA system, fading the background music during the announcements. Audio quality commensurate with the remainder of the sound system.
(5)Audio preamplifiers. To comply with TIA/EIA SE-101-A either separately mounted or as an integral part of power amplifier. Output power plus 4dB above 1 mW at matched power-amplifier load. Total harmonic distortion less than 1 percent. Frequency response within plus or minus 2 dB from 20 to 20,000 Hz. Input jacks minimum of two. One matched for low-impedance microphone; the other matchable to cassette deck, CD player, or radio tuner signals without external adapters. Minimum noise level minus 55 dB below rated output. Provided with on/off controls, input levels, and master gain.
ADMINISTRATIONDEPARTMENT
Orig w/ ch 0
CED # ITEM DESCRIPTION Nov 16, 2005
1A00PUBLIC ADDRESS & MUSIC SYSTEM
(DESIGN AND SITE SURVEY)
(6)Audio power amplifiers. Designed to provide good quality low distortion monophonic sound to all areas. Power output shall be sufficient to drive all loudspeakers at adequate sound levels, but not less than 300 watts net total power. Provided with controls to balance sound levels throughout the various zones of the store. To comply with TIA/EIA SE-110-A. Rack mounted with 70-V balanced line output. Frequency response within plus or minus 2 dB from 50 to 12,000 Hz. Minimum signal to noise ration of 60 dB at rated output. Total harmonic distortion less than 3 percent at rated power output from 50 t 2=12,000 Hz. Output regulation less than 2 dB from full to no load. Provided with on/off controls, input levels, and low-cut filter. Input sensitivity matched to preamplifier and providing full-rated output with sound-pressure level of less than 10 dynes/sq.cm. impinging on speaker microphone or handset transmitter.
(7)Microphone. Complies with TIA/EIA SE-105. Type is dynamic, with cardioid polar or omni-directional characteristic. Impedance of 150 ohms. Frequency response is uniform from 50 to 14,000 Hz. Output level minus 58 dB minimum. Finish is satin chrome. Cable is C25J. Mounting to a desk stands with integral-locking , press –to-talk switch. One each microphone and desk stand.
(8)Volume limiter/compressor. One for each zone. Installed in the central equipment cabinet. Arranged to provide a constant input to the power amplifiers. Frequency response 45 to 15,000 Hz of plus of minus 1 dB minimum. Signal reduction rations of at least a 10:1 and 5:1 selectable capability. Distortion maximum of 1 percent. Rated output minimum of plus 14 dB. Inputs are a minimum of two inputs with variable front-panel gain controls and VU or DB meter for input adjustment.
(9)Control Console. Contained within the equipment rack, providing switching and control of all input sources, and gain and program controls for all zones. Provide a monitor speaker and circuit-closing headphone jack with switching and volume control, to monitor program or volume adjustments.
(10)Mass notification paging adapter. Arranged to accept alert tones and voice messages from the mass notification system panel, muting all other inputs, and distributing to all zones simultaneously. Adaptor shall adjust gain and frequency response for maximum speech intelligibility to comply with NFPA 72 requirements for emergency voice transmissions.
ADMINISTRATIONDEPARTMENT
Orig w/ ch 0
CED # ITEM DESCRIPTION Nov 16, 2005
1A00PUBLIC ADDRESS & MUSIC SYSTEM
(DESIGN AND SITE SURVEY)
(11)Telephone paging adapter. Arranged to accept voice signals from telephone extension dialing access and to automatically provide amplifier input and program override for pre-selected zones. Minimum frequency response flat, 200 to 2500 Hz. Impedance matching: adapter matches telephone line to public address equipment input.
(12)Tone generator. Provided for clock and program interface. Signals produced: minimum of seven distinct, audible signal types including wail, warble, high/low, alarm, repeating chimes, single-stroke chime, and tone. Pitch control for chimes and tone. Volume control for all outputs. Activation-switch network establishes priority and hierarchy of output signals produced by different activation setups.
(13)Equipment cabinet and rack. Complies with TIA/EIA-310-D. Houses amplifiers and auxiliary equipment in standard TIA/EIA 19 inch racks. Group items of same function together, either vertically or side by side, and arrange controls symmetrically. Power-supply connections to consist of approved plugs and receptacles. Arrange all inputs, outputs, interconnections, and test points so they are accessible at rear of rack for maintenance and testing, with each item removable from rack without disturbing other items or connections. Blank panels in equipment racks will be covered so entire front of rack is occupied by panels. Enclosure panels to be ventilated rear and sides and solid top. Use louvers in panels to ensure adequate ventilation. Finish to be uniform, baked-enamel factory finish over rust-inhibiting primer. Power control panel on front of equipment housing, with master power on/off switch and pilot light; and with socket for 5-A cartridge fuse for rack equipment power. Service light provided at top rear of rack with an adjacent control switch. Vertical plus strip with grounded receptacles, 12 inches o.c. the full height of rack, to supply rack-mounted equipment. Maintenance receptacles to be duplex convenience outlets supplied independent of vertical plug strip and located in front and bottom rear of rack. Spare capacity 20 percent spare space capacity in rack for future equipment.
(14)Monitor panel. To be mounted above the amplifiers. Equipped with VU or dB meter, speaker with volume control, and multiple-position rotary selector switch. Connect selector witch and volume control to permit selective monitoring of output of each separate power amplifier via VU or dB meter and speaker.
ADMINISTRATIONDEPARTMENT
Orig w/ ch 0
CED # ITEM DESCRIPTION Nov 16, 2005
1A00PUBLIC ADDRESS & MUSIC SYSTEM
(DESIGN AND SITE SURVEY)
(15)Cone type loudspeakers. To comply with TIA/EIA SE-103. Minimum axial sensitivity pressure rating of 45 dB. Frequency response within plus or minus 3 dB from 50 to 156,000 Hz. Size to be 8 inches with 1 inch voice coil and minimum 5-ounze ceramic magnet. Minimum dispersion angle to be 100 degrees. Rated output level to be 10 watts. Matching transformer to comply with TIA/EIA-160. Full power rated with four TIA/EIA standard taps. Maximum insertion loss of 0.5 dB. Ceiling mounted where ceilings are provided; suspended or wall/column mounted in open overhead areas. Surface mounted in steel back acoustically dampened white boxes. Flush ceiling mounted in steel back acoustically dampened boxes. Metal ceiling grille with white baked enamel. Install approximately 25’ 0” on centers in the sales and checkout area. Provide adequate speaker coverage in all work areas, restrooms, storage rooms, and locker rooms such that persons with normal hearing will be able to hear the speaker output from all locations within those rooms.
(16)Horn type loudspeakers. To comply with TIA/EIA SE-103. Single horn units, double-reentrant design, with minimum full-range power rating of
15 W. Waterproof design approved for wet locations, when used in refrigerated processing or storage rooms subject to washdown , or in other locations subject to wet conditions. Matching transformer to comply with TIA/EIA-160. Full power rated with four TIA/EIA standard taps. Maximum insertion loss of 0.5 dB. Frequency response within plus or minus 3 dB from 250 to 12,000 Hz. Dispersion angle 130 by 110 degrees. Mounted with an integral bracket. Provide speakers with wall-mounted volume controls in processing rooms and processing areas, offices, administration areas, and breakrooms. Mass notification announcements shall override volume controls.
(17)Volume Attenuator station. Wall-plate mounted autotransformer type with paging priority feature. Wattage rating of 10 W. Attenuation per step of 3 dB with positive off position. Insertion loss of 0.4 dB maximum. Attenuation bypass relay to be single pole, double throw. Connected to operate and bypass attenuation when all-call, paging, program signal. Or prerecorded message features are used. Relay returns to normal position at tend of priority transmission. Labeled PA volume.
ADMINISTRATIONDEPARTMENT
Orig w/ ch 0
CED # ITEM DESCRIPTION Nov 16, 2005
1A00PUBLIC ADDRESS & MUSIC SYSTEM
(DESIGN AND SITE SURVEY)
(18)Microphone Outlet. Three pole, polarized, locking type, microphone receptacles in single-gang boxes. Equip wall outlets with brushed stainless-steel device plates.
(19)Conductors and cables. Conductors to be jacketed, twisted pair and twisted multipair, untinned solid copper cables. Insulation for wire in conduit to be thermoplastic, not less than 1/32 inch thick. Microphone cables to be neoprene jacketed, not less than 2/64 inch thick, over shield with filled interstices. Shield no 34 AWG tinned, soft-copper strands formed into a braid or approved equivalent foil. Shielding coverage on conductors is not less than 60 percent. Plenum cable listed and labeled for plenum installation. Cables: run in ½” conduit or electrical metallic tubing.
3.INFORMATION TO BE PROVIDED BY THE SUPPLIER TO DeCA AT TIME OF DELIVERY:
- Provide a scope of work statement for the project.
- Provide a project specific one-line schematic diagram of the sound system.
- Provide a drawing showing all the required sound systems outlets, wiring, terminals, and equipment, as well as any details clarifying site specific methods or limitations.
- Provide a generic materials list of the major equipment components as listed in paragraph 2.d. above.
4.FEDERAL SUPPLY CLASS :5830
5.BASIS OF ALLOCATION: One per store or CDC.
6.WHEN STORE REQUESTS A SPECIFIC MODEL: not applicable.
7.RECOMMENDED SOURCE(s):
a.Baltimore Sound
b.Bogen Corporation
ADMINISTRATIONDEPARTMENT
Orig w/ ch 0
CED # ITEM DESCRIPTION Nov 16, 2005
1A00PUBLIC ADDRESS & MUSIC SYSTEM
(DESIGN AND SITE SURVEY)
8.WARNING/CAUTION WHEN ORDERING THIS PIECE OF EQUIPMENT:
- Pre-installation site survey will be conducted to confirm requirements and components.
- Paging system installation is a major effort with wiring throughout the store.
9.ORDERING PROCEDURES AND ITEM SELECTION:
a.Store must specify overall scope of work requested.
(1)____ Completely new stand alone paging and music system.
(2)____ Completely new stand alone paging and music system to be tied into the existing phone system.
(3)____ Upgrade ofor addition to an existing paging and music system.
(4)____ Removal of obsolete existing paging system equipment requested.
b.When only a minor repair / upgrade to an existing system, store can obtain two no-cost quotes from local sources.