The Ahuja SP-6305TD bi-directional 30W RMS sound projector is engineered for seamless integration into standard 100V and 70V distributed constant-voltage public address (PA) systems. Designed specifically for commercial sound distribution networks, the unit connects directly to industrial line matching amplifiers without requiring external line-matching transformers or secondary impedance converters.
100V and 70V Line Voltage Compatibility
The speaker is built to operate across high-impedance commercial audio distribution lines. In standard 100V line installations, the internal transformer accommodates power demands ranging from 5W to 30W. When connected to a 70V distributed line network, the speaker operates across stepped power levels of 2.5W, 5W, 10W, and 15W, allowing system designers to balance amplifier load calculations across long cable runs without significant signal attenuation.
Power Tapping and Conductor Lead Configuration
Impedance and wattage selection is handled externally via dedicated, color-coded lead conductors protruding from the housing. This eliminates the need to open the IP-44 sealed cabinet during installation. The electrical matching options include:
- Black Lead (Common): Shared neutral / common return connection.
- Red Lead (330Ω): Taps 30W on a 100V distributed line (15W on 70V lines).
- Orange Lead (500Ω): Taps 20W on a 100V distributed line (10W on 70V lines).
- Gray Lead (1kΩ / 1000Ω): Taps 10W on a 100V distributed line (5W on 70V lines).
- White Lead (2kΩ / 2000Ω): Taps 5W on a 100V distributed line (2.5W on 70V lines).
Acoustic and Frequency Matching
The SP-6305TD features dual 16.51 cm (6.5 inch / 160 mm) full-range water-resistant cone speakers positioned back-to-back to project sound in opposite directions. With a frequency response spanning 120 Hz to 15,000 Hz and a sound pressure level (SPL) of 94 dB at 1kHz (1W/1m), the acoustic profile is optimized for voice evacuation, speech intelligibility, and background music paging systems across long linear architectural spaces.
Mounting and Architectural Infrastructure
For mechanical deployment, the unit includes an integrated robust 'U' type mounting bracket. This bracket facilitates structural attachment to overhead ceiling grids, beams, vertical walls, pillars, and corridor suspension points. Measuring Ø175 mm in diameter by 256 mm in height with a net weight of approximately 2.60 kg, the white ABS plastic housing is suitable for installation in railway platforms, factory corridors, school hallways, parking lots, theme parks, and perimeter walkways requiring IP-44 dust and splashing water protection.
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