Public Address System

Professional-grade PA and voice evacuation systems engineered for crystal-clear audio coverage, life-safety compliance, and seamless background music distribution — heard clearly in every corner of your facility.

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Be Heard Clearly — In Every Corner, At Every Moment That Matters.

When it truly matters — during an emergency evacuation, a critical operational announcement, or a moment of mass communication — the reliability and intelligibility of your audio system is not a convenience, it is a life-safety imperative. Technology Control Company for IT (TCC), established in 2014 and headquartered in Riyadh, designs and delivers professional Public Address (PA) and Voice Evacuation Systems that ensure every word is heard, clearly and without distortion, in every zone of your facility — from a quiet executive corridor to a noisy industrial floor, from a packed auditorium to a sprawling outdoor campus.

TCC’s public address solutions span the full spectrum of audio communication needs: general paging and announcement systems, zoned background music distribution, emergency voice evacuation systems (EN 54-16 compliant), intercom-integrated paging, and fully networked IP audio platforms capable of managing hundreds of independently addressable speaker zones across multiple buildings or campuses from a single control point. Whether your facility requires a simple two-zone announcement system for a small office or a sophisticated 200-zone EN 54-certified voice evacuation system for a high-rise tower or a healthcare campus, TCC has the engineering expertise, certified equipment, and installation experience to deliver it to the highest standard.

Every TCC PA system is designed following a rigorous acoustic engineering process that accounts for room dimensions, ceiling height, background noise levels, reverberation time (RT60), and the specific speech intelligibility (STI/STIPA) requirements of each zone. We do not guess speaker placement — we calculate it. The result is a system where announcements are understood on first hearing, music is distributed evenly without hot spots or dead zones, and emergency instructions cut clearly through ambient noise when lives depend on it. All systems are fully integrated with your fire alarm, CCTV, access control, and PABX telephony infrastructure for a truly unified communication and safety ecosystem.

Engineered Speech Intelligibility

TCC designs every PA system to meet defined Speech Transmission Index (STI) targets — acoustically modelling each zone to ensure announcements and emergency instructions are understood clearly on first hearing, even in reverberant or high-ambient-noise environments such as atriums, warehouses, and industrial floors.

EN 54-Certified Voice Evacuation

TCC delivers EN 54-16 and EN 54-24 compliant Voice Alarm Control and Indicating Equipment (VACIE) systems meeting the highest life-safety standards — with supervised speaker line monitoring, N+1 amplifier redundancy, automatic fault detection, 24-hour battery backup, and fire alarm panel integration for fully automatic emergency announcement triggering.

Flexible Multi-Zone Management

From a simple two-zone office PA to a 500-zone campus-wide networked IP audio system, TCC designs fully flexible zone architectures allowing different announcements, music sources, and priority levels to be directed to any combination of zones simultaneously — giving your operations team complete, instant audio control across the entire facility.

Key Features:

A complete public address capability covering acoustic engineering, emergency voice alarm compliance, background music distribution, and intelligent system integration.

Multi-Zone PA Amplifier & Controller Systems

TCC installs professional-grade 100V line PA amplifier systems with zone selector matrices, priority override inputs, and microphone paging stations that allow authorized personnel to address all zones, a selection of zones, or individual zones independently. Amplifier power is calculated precisely to the speaker load of each zone — ensuring consistent sound pressure level (SPL) without clipping or distortion across every speaker in the circuit.

Voice Alarm & Emergency Evacuation (EN 54)

Life-safety grade Voice Alarm Control and Indicating Equipment (VACIE) panels with supervised amplifier outputs, end-of-line speaker monitoring, Class A and Class B wiring options, N+1 amplifier redundancy, 24-hour battery backup, and automatic integration with addressable fire alarm systems. Pre-recorded evacuation messages, alert tones, and live override microphone — all certified to EN 54-16 and EN 54-24 for full regulatory compliance.

Background Music (BGM) Distribution

Zoned background music systems for retail environments, hotel lobbies, restaurants, spas, and public areas — distributing audio from digital media players, streaming services, or satellite sources to multiple independently volume-controlled zones. Scheduled playlists, day-part programming, and automatic PA priority override ensure a seamless, professional audio environment with instantaneous interruption for announcements or emergencies.

IP Networked Audio Systems

For large campuses, multi-building sites, and distributed facilities, TCC deploys IP-based networked audio platforms (Dante, AES67, or proprietary IP audio) transmitting audio over the existing data network — eliminating dedicated inter-building audio cabling while enabling centralized control of hundreds of zones from a single software interface, with individual zone volume, source selection, and scheduling managed from any networked workstation.

Ceiling, Wall & Horn Speaker Installation

TCC supplies and installs the full range of professional speaker types matched to each environment: recessed ceiling speakers for offices, corridors, and retail areas; surface-mounted wall speakers for lobbies and meeting rooms; pendant speakers for high-bay industrial and warehouse spaces; and weatherproof horn speakers for outdoor areas, car parks, and plant rooms — all selected and positioned to deliver the required SPL and coverage uniformity for that specific space.

PABX & Telephone Paging Integration

TCC integrates the PA system with your PABX telephone exchange, enabling authorized users to initiate facility-wide or zone-specific announcements directly from any desk phone or mobile extension — without requiring a dedicated paging microphone station. All-call, group-call, and zone-specific paging from the telephone system streamlines daily operations and eliminates the need for additional paging hardware in distributed environments.

Fire Alarm Panel Integration & Cause-and-Effect

TCC engineers direct integration between the PA/voice evacuation system and the addressable fire detection panel. When a specific fire zone activates, the panel immediately triggers the relevant pre-recorded evacuation message or alert tone to the appropriate PA zones — automatically overriding background music and general paging at maximum priority, in full accordance with your approved evacuation strategy and sequence plan.

Digital Signal Processing (DSP) & Acoustic Tuning

For environments where acoustic quality is paramount — conference rooms, auditoriums, prayer halls, and hotel ballrooms — TCC deploys dedicated DSP processors applying parametric EQ, delay alignment, dynamic compression, feedback suppression, and noise gating. Every DSP program is tuned on-site using calibrated measurement equipment to achieve target STI values and frequency response in the real-world acoustic environment of each specific space.

Operating Modes

PA System Priority & Operating Modes

Emergency / Evacuation

Highest priority. Auto-triggered by fire panel. Pre-recorded messages or live microphone override all other audio instantly.

Chime & Tone Signals

Scheduled or triggered alert tones for shift changes, prayer times, facility opening/closing, and timed operational notifications.

General Paging

Operator-initiated announcements to all zones, selected zones, or individual areas via paging microphone or telephone integration.

Background Music

Lowest priority continuous ambient audio from digital media or streaming. Automatically paused by any higher-priority source without manual intervention.

PA Solutions We Deploy

Deployment Environments

Corporate Offices & Commercial Buildings

Multi-zone ceiling speaker systems integrated with PABX paging, scheduled announcements, background music, and EN 54 voice evacuation — delivering both daily operational communication and life-safety compliance from a single unified platform.

Hospitals & Healthcare Campuses

Zoned PA systems covering wards, corridors, waiting areas, and outdoor spaces — with nurse call integration, medical code announcement capability, privacy-compliant volumes in patient areas, and EN 54 voice alarm for the entire campus.

Schools, Universities & Campuses

Campus-wide IP audio networks delivering bell schedules, general announcements, prayer call distribution, and emergency evacuation messaging to classrooms, corridors, outdoor areas, and sports facilities from a centralized management console.

Retail Stores & Shopping Malls

Sophisticated BGM distribution for retail zones and mall common areas — with independent zone music and volume control, promotional announcement capability, and seamless transition to EN 54 emergency evacuation mode across the entire mall in seconds.

Hotels & Hospitality Venues

Premium audio systems for hotel lobbies, restaurants, pool areas, ballrooms, and guest corridors — high-fidelity background music with discreet ceiling speakers matched to interior design, and EN 54 voice evacuation covering all occupied areas.

Industrial & Manufacturing Facilities

High-power horn speaker systems delivering clear, intelligible announcements above high ambient noise levels in factories, warehouses, and plant rooms — with weather-rated outdoor speakers for yard and perimeter areas and full emergency voice alarm capability.

Sectors We Serve

Industries & Environments

Our Delivery Methodology

TCC Public Address System Implementation Working Process

Acoustic Assessment & Requirement Analysis

TCC begins with a thorough acoustic assessment of your facility — reviewing architectural drawings and space dimensions, measuring existing background noise levels (NR curves) in each zone, identifying high-reverberation areas, understanding operational usage patterns, and defining the speech intelligibility targets (STI/STIPA) and sound pressure level (SPL) requirements for each zone type. For life-safety systems, we also review the fire strategy and evacuation plan to ensure the PA zoning aligns with the defined alarm zones and evacuation sequences required by the authority having jurisdiction.

Acoustic Modelling & System Design

Using professional acoustic modelling software, TCC engineers calculate the optimal speaker type, quantity, placement, and aiming angle for every zone — ensuring the required SPL uniformity and STI targets are achieved by design, before a single speaker is installed. The full system design package includes speaker layout drawings, amplifier channel assignments, wiring schematics, zone matrix programming plans, equipment specifications, and integration architecture with fire alarm, PABX, and building management systems — reviewed and approved before installation commences.

Professional Installation & Cable Routing

TCC's trained audio installation teams deploy all hardware with precision — installing speakers at the exact positions specified in the acoustic model, routing 100V line speaker cables or IP audio network connections through appropriate conduits and cable trays, mounting amplifier racks and PA controllers in dedicated equipment rooms, installing paging microphone stations and emergency override panels, and connecting all integration interfaces to fire alarm and PABX systems — with minimal disruption to your ongoing operations through careful scheduling and phased delivery planning.

System Programming & Commissioning

Every zone matrix, priority level, source routing, and automation schedule is programmed and thoroughly tested. For voice evacuation systems, all cause-and-effect relationships with the fire alarm panel are verified — confirming that each fire zone activation triggers the correct pre-recorded announcement to the correct PA zones at the correct priority level. Background music scheduling, PABX paging integration, tone scheduling, and remote monitoring configuration are all completed and tested prior to final commissioning sign-off.

Acoustic Measurement & STI Verification

Following installation and commissioning, TCC conducts a comprehensive acoustic measurement survey using calibrated measurement microphones and STIPA test signals — verifying that the installed system achieves the designed STI values and SPL uniformity in every zone. DSP parameters are fine-tuned based on real-world measurement results. A full measurement report is produced and delivered with project documentation, providing an objective, verifiable record of system performance for compliance, insurance, and authority approval purposes.

Training, Handover & Ongoing Maintenance

TCC provides hands-on training for facility managers and security teams covering daily system operation, zone paging procedures, BGM source management, emergency override protocols, scheduled announcement programming, and basic fault identification. Full as-built drawings, amplifier channel schedules, wiring diagrams, acoustic measurement reports, and operating manuals are provided at handover. Annual Maintenance Contracts (AMC) include scheduled system testing, speaker line supervision checks, battery backup testing, and 24/7 helpline support at 9200 14102 — keeping your PA system certified and fully operational throughout its entire operational life.