Mechanical Mounting with U-Type Bracket
The Ahuja SP-6305TD bi-directional PA dual sound projector is engineered for rapid, secure deployment in commercial and industrial settings. Physical installation is executed using the integrated, heavy-duty 'U' type mounting bracket. This bracket facilitates versatile attachment across flat vertical walls, rigid pillars, structural beams, and overhead horizontal ceiling structures.
With a compact cylindrical ABS plastic housing measuring Ø175 mm in diameter by 256 mm in height and an approximate net unit weight of 2.60 kg (packaged weight of 4 kg), the unit exerts minimal load on structural supports. Installers must securely anchor the 'U' bracket using appropriate load-rated fasteners suited to the mounting substrate (such as masonry anchors, machine bolts, or structural beam clamps) before suspending and securing the speaker body.
Electrical Wiring and Power Tap Selection
Designed for distributed public address audio networks, the SP-6305TD operates on 100V and 70V constant-voltage speaker lines. The unit features external color-coded lead wires accessible directly from the housing, allowing system integrators to configure input wattage and matching impedance without opening the sealed ABS enclosure:
- Black Lead: Common / Ground connection (COM)
- Red Lead: 330 Ω primary input impedance (delivers 30W on a 100V line / 15W on a 70V line)
- Orange Lead: 500 Ω primary input impedance (delivers 20W on a 100V line / 10W on a 70V line)
- Gray Lead: 1 kΩ (1000 Ω) primary input impedance (delivers 10W on a 100V line / 5W on a 70V line)
- White Lead: 2 kΩ (2000 Ω) primary input impedance (delivers 5W on a 100V line / 2.5W on a 70V line)
Always connect the Black common wire to the amplifier's negative/common terminal. Connect the positive line feed to only ONE selected color-coded tap wire per speaker to match the acoustic zone requirements and prevent line overloading.
Bi-Directional Acoustic Alignment
The SP-6305TD incorporates two 16.51 cm (6.5-inch / 160 mm) full-range cone drivers aligned to project audio in direct opposite directions (180° offset). During installation, orient the cylindrical axis parallel to linear traffic corridors to maximize speech intelligibility and acoustic throw (94 dB SPL at 1kHz, 1W/1m across a 120–15,000 Hz frequency range).
This dual-projection design is optimized for:
- Railway and transit passenger platforms
- Factory gangways, logistics bays, and industrial aisles
- Commercial parking lots and perimeter walkways
- School, campus, and institutional corridors
- Theme parks and recreational pathway zones
Environmental and IP-44 Ingress Considerations
The speaker enclosure meets IP-44 standards for ingress protection, providing resilience against solid particle ingress and splashing water. Both full-range drivers feature water-resistant cones housed inside the robust white ABS cabinet. Ensure all external wiring junctions and unused lead conductors are individually insulated with heat-shrink or enclosed in IP-rated external junction boxes to maintain environmental sealing across outdoor and damp installations.
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