The Ahuja SUH 15XT public address horn speaker is engineered for deployment in high-demand industrial, commercial, and outdoor distributed sound networks. Integrating an internal 100V line matching transformer within a sealed UV-protected ABS enclosure, the unit simplifies long-distance field wiring while safeguarding acoustic components across challenging operating environments.
100V Constant-Voltage Distributed Line Wiring
The SUH 15XT is designed to operate on standard 100V commercial PA amplifier speaker lines. Constant-voltage 100V distributed architecture allows multiple horn speakers to be connected in parallel across extended cable routes without the severe power and signal transmission losses associated with low-impedance systems.
When laying out the speaker network, ensure that the total aggregated wattage of all connected horn speakers on the line does not exceed the continuous rated output capacity of the driving 100V PA amplifier. System integrators should verify cable polarity across the parallel network to ensure uniform acoustic phase alignment across the entire coverage area.
Rotary Switch Power Tap and Impedance Selection
Power output adjustments are managed via an integrated rotary switch located at the rear of the sealed assembly. This switch allows technicians to adjust line impedance and power draw to match specific acoustic coverage targets without altering line voltage.
| Power Tap (100V Line) | Nominal Line Impedance | Acoustic Output (SPL at 1 kHz) |
|---|---|---|
| 15W (Rated RMS) | 670 Ω | 118 dB / 15W / 1m |
| 10W | 1 kΩ | Intermediate High SPL |
| 5W | 2 kΩ | Balanced Area Coverage |
| 2.5W | 4 kΩ | Low-Noise / Ambient SPL |
To calibrate the sound pressure level for specific zones, set the rotary switch to the required wattage tap before energizing the amplifier circuit. The rated sensitivity delivers 106 dB/1W/1m, reaching a maximum sound pressure level of 118 dB/15W/1m at full 15W RMS power draw (23W maximum input capability).
Acoustic Directivity and Physical Placement
The SUH 15XT features a rectangular horn flare measuring 250 x 145 mm with an overall body length of 293 mm. Rectangular horn geometry provides defined directional acoustic projection, making it optimal for long-throw signaling and high-intelligibility voice dispersion along corridors, factory floors, and open outdoor perimeter runs.
Weighing 1.89 kg, the unit's lightweight UV-protected ABS plastic construction facilitates secure positioning on walls, structural columns, steel frameworks, and utility poles across industrial and public facilities.
Environmental and Compliance Guidelines
The speaker is built to IP66 ingress protection standards, offering complete defense against dust ingress and high-pressure water jets. This ingress rating enables direct outdoor installation on public roads, factory perimeters, emergency announcement networks, and commercial loading docks.
Electrical safety and manufacturing conformity adhere to European Union regulations and the EN 60065 Low Voltage Directive. The unit's operational frequency range of 275 Hz to 7,000 Hz is factory-tuned for speech reproduction and warning tones across factories, worship places, shopping malls, conference rooms, showrooms, and auditoriums.
