The Ahuja AU-50XT Public Address driver unit is engineered for demanding commercial, institutional, and industrial acoustic deployments requiring clear vocal projection, high sound pressure levels, and long-line transmission capabilities. Featuring a built-in 100V line matching transformer with rotary-switch power taps (5W, 10W, 20W, 40W, and 50W) and an IP66 ingress protection rating when coupled with a reflex horn, this driver unit adapts to diverse high-ambient-noise and outdoor environments.
Distributed Industrial Paging and Mass Notification
In large manufacturing plants, distribution centers, and fabrication yards, audio signals must travel across extensive distances without signal degradation. The integrated 100V line matching transformer allows multi-speaker deployment along high-impedance speaker lines driven by constant-voltage amplifiers. Plant engineers and system integrators can adjust individual speaker output at each location using the rear rotary switch:
- High-Noise Fabrication Areas: Set to the 50W tap (200Ω) or 40W tap (250Ω) to achieve sound pressure levels reaching up to 130 dB (at 50W/1m) to overcome background machinery noise.
- Assembly Lines and Storage Aisles: Set to intermediate taps such as 20W (500Ω) or 10W (1kΩ) for balanced coverage without acoustic distortion.
- Corridors and Low-Noise Support Zones: Set to the 5W tap (2kΩ) to maintain speech intelligibility while optimizing total amplifier load across the distributed network.
Perimeter Security and Outdoor Voice Projection
Perimeter monitoring stations, gatehouses, open parking facilities, and security access points require robust public address projection capable of operating under harsh weather conditions. Meeting EN 60529 standards with an IP66 rating when mounted to compatible reflex horns, the unit protects critical internal elements against heavy dust ingress and strong water jets. Its broad operational temperature range of -30°C to +70°C ensures continuous outdoor reliability in both extreme cold and high ambient heat.
Multi-Zone Campus and Transportation Hub Public Address
Large infrastructure facilities—including railway yards, bus terminals, multi-facility logistics parks, and educational campuses—benefit from the AU-50XT's vocal band frequency response of 160 Hz to 7,000 Hz. This frequency curve prioritizes speech clarity for routine announcements, schedule notifications, and emergency broadcast instructions. The precision-wound voice coil on an aluminium bobbin ensures heat dissipation during continuous, duty-intensive voice communications.
Reflex Horn Integration for Targeted Acoustic Coverage
Equipped with industry-standard 1-3/8” - 18TPI threading (Throat Couple No. 1) and a die-cast aluminium acoustic head (flange), the AU-50XT mounts directly to matching reflex horns and trumpets. This enables project planners to direct acoustic energy precisely toward long walkways, perimeter fencing, loading docks, and remote access lanes.
