BOGEN SPT30A Re-entrant Horn Loudspeakers 30W 25/70V

BOGEN SPT30A Re-entrant Horn Loudspeakers 30W 25/70V

BOGEN SPT30A Re-entrant Horn Loudspeakers 30W 25/70V

The Bogen SPT30A and SP308A are compact, high intelligibility, reentrant type loudspeakers, designed for one-way or two-way sound and communication systems. Their sturdy, weatherproof, all-metal construction is ideal for indoor and outdoor use in industrial plants, warehouses, schools, construction sites, transportation terminals, and recreational areas. The Model SPT30A has a built-in, variable impedance selector switch for matching the speaker power requirements to a 25V or 70V constant-voltage line. The model SP308A has an 8-ohm impedance only

High intelligibility and efficiency; ideal for both one-way and talk back applications • Weatherproof, all-metal construction • 30 watts; 25/70 volt or 8-ohm operation • Tap settings for 70V: 30, 15, 7.5, 3.7, 1.8 watts; for 25V: 15, 7.5, 3.7, 1.8 watts • Rotary tap impedance selector on SPT30A • Tilt and swivel base for easy positioning • Screw terminals make installation fast and easy • All-purpose mounting bracket • Self-aligning, field replaceable diaphragm • Textured mocha enamel finish • Limited lifetime warranty • Mountable to I-beam flange using Bogen’s BC1 Beam Clamp (sold separately) • Mountable to electrical box using Bogen’s HSES10 mounting strap (sold separately) • Terminal Cover (TCSPT1) allows connection of conduit fittings to horn speakers (sold separately)



Service & Support

1 year

Advanced Features

The unit shall incorporate a seven-position weather-sealed switch, to allow matching the loudspeaker to a 25V or 70V constantvoltage line. Power handling capacity shall be adjustable at 70V to 1.8, 3.7, 7.5, 15, or 30 watts, and at 25V to 1.8, 3.7, 7.5, or 15 watts

Dimensions & Weight

Dimensions: 11" Diameter x 10-1/2" D Product Weight: 6 lb.


30 watts continuous, 40 watts equalized


Sound Pressure Level: 125 dB @ four feet on axis with 30-watt input @ 1000 Hz Dispersion: 100º

Receive Sensitivity

-22 dBm [Ref: 10 dynes/cm2]


The loudspeaker shall be a Bogen Model ____ (specify SPT30A or SP308A), or approved equivalent, reentrant type horn loudspeaker. The frequency response shall be 225 Hz to 14 kHz. Rated power output shall be 30 watts, RMS continuous. Dispersion shall be 100º. Sound pressure level, measured four feet on axis with 30 watt input @ 1000 Hz, shall be at least 125 dB.