Public Address Amplifier and Distributed Line Compatibility
The Ahuja UHC-25XT is engineered for direct integration into commercial and industrial constant-voltage distributed sound systems. Equipped with an internal 100V line-matching transformer, the unit connects directly to standard 100V commercial public address (PA) mixer-amplifiers, power boosters, and zone-distribution line amplifiers. High-voltage line operation facilitates long-distance cable runs across manufacturing plants, warehouse perimeters, transport terminals, and municipal sports complexes without incurring severe signal attenuation or I²R power loss across extended line lengths.
Transformer Power Tappings and Impedance Matching
The horn speaker features an integrated multi-tap line matching transformer managed by an external rotary switch located on the rear of the sealed enclosure. System integrators and audio technicians can balance individual speaker output levels and adjust amplifier load distribution directly in the field without opening the speaker housing. The table below outlines the electrical power tap selections and corresponding input impedance loads:
| 100V Line Power Tap | Transformer Primary Impedance | Rated Output Power |
|---|---|---|
| 25 W | 400 Ω | 25W RMS (38W Max) |
| 20 W | 500 Ω | 20W RMS |
| 15 W | 670 Ω | 15W RMS |
| 10 W | 1 kΩ (1000 Ω) | 10W RMS |
| 5 W | 2 kΩ (2000 Ω) | 5W RMS |
Cabling and Terminal Interconnection
For line wiring and terminal connection, the UHC-25XT is factory-fitted with an integrated 0.6 m (2 ft) 2-core sheathed speaker cable. The cable entry is permanently protected and mechanically anchored by a water-tight, tug-proof cable gland that prevents strain on internal connections and prevents moisture ingress into the driver chamber. The 2-core tail allows direct jointing or junction-box termination to standard 100V speaker distribution cabling networks.
Mechanical Mounting and Structural Compatibility
Mechanical installation is supported by a heavy-duty metal mounting bracket capable of 270-degree rotation. This allows precise directional alignment and acoustic coverage targeting on vertical walls, structural I-beams, ceiling struts, lighting masts, and perimeter posts. External stand mounting bolts are manufactured from corrosion-resistant stainless steel to maintain hardware integrity when installed alongside structural metalwork in high-moisture or aggressive outdoor operating conditions.
Regulatory, Environmental, and Acoustic Standards
The Ahuja UHC-25XT complies with European Union regulations, including conformity to Low Voltage Directive standard EN 60065. Its rugged UV-protected ABS plastic bell, reflector, and back cover assembly achieve an IP66 ingress protection rating, ensuring total compatibility with exposed outdoor industrial environments subject to heavy dust ingress and high-pressure water jets. Operating across a frequency range of 250 Hz to 10,000 Hz with high acoustic sensitivity (108 dB at 1W/1m; 122 dB at 25W/1m at 1kHz), the unit integrates seamlessly into emergency paging, siren, plant-wide intercom, and public announcement system architectures.
