MXS Hangar Audio System Upgrade SOW.pdf

100 MXG | MXS Hangar Audio System Upgrade

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STATEMENT OF WORK

MXS Hangar Audio System Upgrade

RAF Mildenhall, United Kingdom

Requiring Activity 100th Maintenance Group (100 MXG)

Place of Performance MXS Hangar, RAF Mildenhall, United Kingdom

Document Status Draft for acquisition planning and contracting review

1.0 Background

The existing audio system serving the MXS hangar is degraded and does not provide dependable, intelligible sound coverage throughout the facility. The hangar supports maintenance operations and recurring Wing-, Group-, and Squadron-level functions, including changes of command, official ceremonies, professional-development events, the Joan Mann Sports Day, and other large gatherings. A modern, permanently installed audio system is required to provide clear speech reinforcement, program audio, flexible microphone support, and reliable operation across the occupied hangar area.

2.0 Objective

The Contractor shall furnish all labor, supervision, equipment, materials, tools, transportation, high-level access equipment, programming, testing, documentation, training, and incidental items necessary to remove the obsolete system and deliver a complete, safe, fully operational hangar audio system. The solution shall be designed for the hangar's acoustic environment and shall provide uniform, intelligible audio without persistent feedback, objectionable distortion, excessive dead zones, or uncontrolled volume variation.

3.0 Scope of Work

� Conduct a pre-installation site survey and validate mounting locations, cable routes, equipment-room conditions, available electrical service, radio-frequency conditions, and system coverage requirements.

� Develop and submit a coordinated system design showing speaker and subwoofer placement, equipment-rack layout, signal flow, cable routes, control locations, and power/interface requirements.

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� Remove and dispose of existing hangar speakers and obsolete audio-visual equipment identified by the Government. Disposal shall comply with installation procedures and applicable environmental requirements.

� Provide, install, terminate, label, program, configure, test, and commission all equipment and supporting materials required by this SOW.

� Provide user training, final system documentation, warranties, and one year of onsite maintenance support following Government acceptance.

4.0 General Technical Requirements

� All equipment shall be new, current production, commercial grade, and suitable for continuous use in a large industrial hangar environment.

� Exterior-facing or hangar-mounted loudspeakers exposed to dust or moisture shall have a minimum IP55 rating and ultraviolet-resistant enclosures.

� The system shall support live speech, handheld and body-worn wireless microphones, gooseneck microphones, recorded media, Bluetooth audio, FM reception where service is available, and programmable announcement/jingle playback.

� The audio matrix, amplifiers, wireless receivers, media player, power distribution, cable management, and associated devices shall be integrated into one lockable floor-standing equipment rack.

� The primary system shall be controllable from a protected commercial tablet using a secure wireless gateway and magnetic charging/docking station. A hard-wired wall control panel shall provide essential backup control if the tablet or wireless network is unavailable.

� The Contractor shall coordinate wireless microphone frequencies and settings to prevent harmful interference with local systems and comply with applicable United Kingdom spectrum requirements and installation policies.

� Equipment shall operate from the electrical service available at the site. The Contractor shall identify any power conversion, dedicated circuit, isolation, or surge-protection requirements before installation. New permanent electrical work is excluded unless specifically authorized by the Contracting Officer.

� Visible low- and mid-level cabling shall be enclosed in properly secured conduit or trunking.

High-level cable, suspension wire, clamps, girder clamps, and speaker mounting hardware shall

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� All cabling, connectors, patching, and rack components shall be neatly dressed, mechanically secured, uniquely labeled at both ends, and documented in the as-built package.

5.0 Equipment and Salient Characteristics

Reference manufacturer/model numbers are included only to describe the required level of quality and salient characteristics. The Contractor may propose equal products that meet or exceed every stated requirement and provide full system compatibility. Substitutions shall be identified in the proposal with supporting technical data.

Item / Function Minimum Requirement Qty.

Two-way cabinet loudspeaker

12-inch low-frequency driver; 1-inch high-frequency driver; minimum IP55;

UV-resistant rotomolded enclosure; 100 V taps of at least 200/100 W;

maximum SPL at least 132 dB; mounting bracket; grey or Government-approved neutral finish. Reference: FBT SHADOW 112CT or equal.

Subwoofer

14-inch driver; minimum IP55; UV-resistant rotomolded enclosure; nominal 8-ohm operation; power handling at least 700 W; maximum SPL at least 129 dB; mounting bracket; grey or Government-approved neutral finish.

Reference: FBT SHADOW 114S or equal.

5.1 Microphone and Wireless System

Item / Function Minimum Requirement Qty.

Handheld transmitter Professional UHF wideband handheld wireless transmitter compatible with the four-channel receivers. 2

Body-pack transmitter Professional UHF wideband body-pack transmitter compatible with both headset and lavalier microphones. 2

Head-worn microphone Unidirectional, lightweight microphone compatible with the body-pack transmitter. 2

Lavalier microphone High-sensitivity, unidirectional condenser lavalier microphone, black, compatible with the body-pack transmitter. 2

Wireless gooseneck microphone Professional wireless gooseneck microphone for podium/lectern use. 2

Four-channel diversity receiver

Professional UHF four-channel diversity receiver compatible with all furnished transmitters; two units shall support the required microphone channels and included additional handheld capability.

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Item / Function Minimum Requirement Qty.

Remote antenna assembly Wall-mount antenna bracket/booster with compatible antennas, BNC cabling, mounting hardware, and connections required for reliable RF coverage. 2

5.2 Processing, Control, Amplification, and Media

Item / Function Minimum Requirement Qty.

Digital audio matrix Minimum 16 x 16 digital matrix with at least 8 x 8 local analog I/O; 1U rack form factor; software-configurable routing, processing, presets, level control, and system monitoring. Reference: Allen & Heath AHM-16 or equal.

Backup wall control Hard-wired wall-mounted control panel compatible with the digital matrix and configured for essential source, preset, and volume functions. 1

Remote-control tablet Commercial tablet of suitable size and performance, configured only with applications required to control the installed system. 1

Protective case and dock Protective enclosure and secure magnetic charging/docking station compatible with the control tablet. 1 each

Wireless gateway Secure gateway compatible with the tablet control system and audio matrix. 1

Power amplifier with DSP Four-channel, 1U professional amplifier with integrated DSP; output capacity comparable to 4 x 3,400 W and sufficient headroom for the final engineered loudspeaker load. Reference: Studiomaster DQX4-8000 or equal.

Rack-mount media player Bluetooth playback, FM tuner, and built-in programmable jingle/announcement player, including required rack-mount hardware. 1

5.3 Rack, Cabling, Mounting, and Incidental Materials

Item / Function Minimum Requirement Qty.

Equipment rack Minimum 28U, lockable, floor-standing rack cabinet approximately 600 x 600 mm, including feet and all mounting hardware. 1

Horizontal cable management Rack-compatible horizontal cable-management panels. 2

Vertical/ancillary cable management Rack-compatible panels and securing strips. 1 lot

Rack drawers Minimum 4U lockable rack drawers for microphones and accessories. 2

Power conditioning Professional mains filter/conditioner suitable for the installed system. 1

Power distribution Rack-mount power distribution units with adequate outlets and load rating. 2

Speaker connectors Professional locking speaker connectors, including Neutrik SpeakON or equal, with quantity adjusted as required by final design. 4 min.

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Item / Function Minimum Requirement Qty.

Speaker/microphone cable Low-loss, appropriately rated cable sized for the final circuit lengths and loads;

enclosed at low levels and otherwise supported/protected along approved routes.

1 lot

Suspension and mounting materials

Rated hanging wire, brackets, clamps, girder clamps, anchors, fasteners, and secondary safety restraints required for a complete installation. 1 lot

Incidental materials Blanking panels, plates, patch leads, connectors, labels, terminations, cable ties/strips, conduit, trunking, and all sundry materials required for completion. 1 lot

6.0 Installation Requirements

� The Contractor shall submit the final design and installation schedule for Government review before beginning physical installation.

� Installation shall include delivery to the site, off-loading, staging, high-level access equipment, protection of Government property, and daily housekeeping.

� Speaker locations and aiming shall be engineered to optimize speech intelligibility and even coverage while minimizing reflections, feedback, and interference with hangar operations.

� The equipment rack shall be fully assembled, wired, labeled, and functionally tested in the

Contractor's workshop before delivery whenever practical.

� The Contractor shall coordinate outages and disruptive work with the Government point of contact. Work shall not obstruct emergency routes, fire-protection equipment, aircraft movement areas, or ongoing maintenance without prior approval.

� Penetrations, attachments, and structural mounting points shall be approved before installation.

The Contractor shall not disturb suspected asbestos-containing materials, lead paint, protected fire barriers, or other hazardous materials.

� At completion, the Contractor shall remove packaging, debris, unused materials, and obsolete equipment designated for disposal, leaving all affected areas clean and serviceable.

7.0 Testing, Commissioning, and Acceptance

The Contractor shall conduct workshop testing of the completed rack and onsite testing of the fully installed system. Testing shall demonstrate all required features under representative operating conditions. The Government will accept the system after successful completion of the following:

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� All sixteen main loudspeakers and six subwoofers operate without audible distortion, rattling, intermittent connections, or incorrect polarity.

� Coverage is reasonably uniform throughout Government-designated occupied areas, and spoken announcements are clearly intelligible at normal event levels.

� All wireless handheld, body-pack, headset, lavalier, and gooseneck microphone channels operate simultaneously without harmful interference, dropouts, or persistent feedback.

� The digital matrix, amplifier DSP, presets, media player, tablet control, wireless gateway, dock, and backup wall panel perform their assigned functions.

� Power-up, normal operation, controlled shutdown, mute, emergency recovery, source selection, volume control, and saved-preset recall are demonstrated.

� All rack equipment, cables, connectors, loudspeakers, controls, and breaker/power interfaces are labeled and agree with the as-built documentation.

� Any deficiencies identified during testing are corrected and retested at no additional cost before final acceptance.

8.0 Deliverables

Deliverable Required Content Due

Site survey report Existing conditions, validated power/interface needs, RF observations, proposed mounting/cable approach, and identified constraints.

Before final design

System design submittal Equipment list, salient-characteristic compliance, speaker layout, rack elevation, signal-flow diagram, cable schedule, control concept, and installation schedule.

Before installation

Product data Manufacturer data sheets, installation instructions, warranty terms, and proposed equal-item comparisons.

With design submittal

Test and commissioning report

Completed test results, settings, amplifier/DSP configuration, RF frequencies, and corrected deficiency record. At acceptance

As-built package

Final drawings, speaker locations/aiming, cable routes and labels, rack elevation, signal flow, equipment serial numbers, software/configuration backup, and administrator credentials transferred securely to the Government.

At acceptance

Training materials Quick-reference guide and manufacturer manuals for routine operation and basic troubleshooting. At training

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9.0 Training

The Contractor shall provide onsite operator training for Government personnel after commissioning.

Training shall include system startup/shutdown, source and microphone selection, transmitter battery management, tablet and wall-panel control, preset recall, feedback avoidance, media playback, safe volume adjustment, basic troubleshooting, and procedures for requesting maintenance. Training shall include sufficient hands-on practice for designated users and shall be repeated once within 30 days if requested by the Government.

10.0 Warranty and Maintenance

� The Contractor shall provide all standard manufacturer warranties and a minimum one-year workmanship warranty beginning on the date of Government acceptance.

� The Contractor shall provide one year of onsite maintenance support, including fault diagnosis, configuration support, repair or replacement coordination, and correction of installation-related deficiencies.

� Unless otherwise agreed in the contract, the Contractor shall acknowledge service requests within one business day and provide an onsite response within three business days when remote resolution is unsuccessful.

� Warranty or maintenance actions shall not reduce system functionality without Government coordination, and configuration backups shall be maintained throughout the support period.

11.0 Safety, Security, and Installation Compliance

� Contractor personnel shall comply with RAF Mildenhall access, escort, photography, communications-security, foreign-national, vehicle, and work-control procedures.

� The Contractor shall provide task-specific risk assessments and method statements, as applicable, for work at height, lifting, drilling, electrical interfaces, and overhead installation.

� High-level work shall use inspected and properly rated access equipment. Overhead components shall use approved primary fasteners and secondary safety restraints where applicable.

� The Contractor shall protect aircraft, tools, facilities, and Government equipment from dust, falling objects, debris, and accidental activation. Hot work is prohibited unless separately authorized under installation procedures.

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� No wireless device shall be connected to a Government network unless specifically approved.

The audio-control system shall operate as a standalone system unless the Government provides written authorization for another architecture.

12.0 Government-Furnished Support

� Reasonable access to the hangar and designated equipment area during approved work periods.

� Identification of existing Government equipment to be removed, retained, or turned over.

� A Government point of contact for scheduling, work coordination, design review, and acceptance testing.

� Available facility drawings and information concerning existing electrical service, subject to accuracy and availability.

Unless expressly identified in the awarded contract, the Government will not furnish labor, tools, ladders, lifts, installation hardware, consumables, test equipment, network services, or storage for Contractor property.

13.0 Period and Place of Performance

Place of performance is the MXS hangar at RAF Mildenhall, United Kingdom. The Contractor shall propose a schedule that minimizes impact to hangar operations. The final start date, normal working hours, access windows, and completion period will be established in the contract or notice to proceed.

Installation shall not begin until required submittals and site coordination are complete.

14.0 Quality Control and Government Surveillance

The Contractor shall maintain a quality-control process covering receipt inspection, rack assembly, cable termination, labeling, programming, testing, deficiency correction, and final documentation.

Government review, observation, or inspection does not relieve the Contractor of responsibility for delivering a complete and compliant system. Only the Contracting Officer may authorize changes affecting price, schedule, or scope.

15.0 Basis of Acceptance

Final acceptance will be based on completion of the approved scope; successful testing and commissioning; correction of all deficiencies; delivery of as-built documentation, configuration files, warranties, and training; and written confirmation by the authorized Government representative that the system is complete and operational. Partial delivery, energization, or beneficial use does not constitute final acceptance.

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Appendix A - Reference Equipment Crosswalk

The following do not waive competition requirements or authorize a brand-name-only purchase.

Equivalent products must satisfy the salient characteristics in Section 5.0 and function as one integrated system.

Item / Function Minimum Requirement Qty.

SHADOW 112CT Two-way IP55 cabinet loudspeaker 16

SHADOW 114S IP55 subwoofer 6

JSS 4B Handheld transmitter 2

R4TBM Body-pack transmitter 2

CM-214ULi Head-worn microphone 2

CM-501Hi Lavalier microphone 2

CS-W4T Wireless gooseneck microphone 2

R-4 Four-channel diversity receiver 2

ANT-49 / BNC-C10M Antenna bracket/booster and BNC cable 2

AHM-16 16 x 16 digital audio matrix 1

IP1-BK Backup wall control panel 1 iPad / iPort ConnectPro Remote-control tablet, case, and dock 1 set

GWD23 Wireless gateway 1

DQX4-8000 Four-channel power amplifier with DSP 1

910.030U / 910.110U Media player and rack mount 1 set

99212 / 99216 28U floor-standing rack and feet 1 set

RAOK-1P / RAOK-LR Rack cable management 1 lot

RDRW2U Rack drawers (description states 4U) 2

MKF334 / PDU223 Mains filter and power distribution 1 / 2

122033 Speaker connectors 4 min.

MISC / 2.5TWINCBL /

CHAIN22 Cables, connectors, speaker/microphone cable, suspension hardware 1 lot