Data Sheet

The Bogen SPT30A and SP308A are compact, high
intelligibility, reentrant type loudspeakers, designed for
one-way or two-way sound and communication sys-
tems. Their sturdy, weatherproof, all-metal construc-
tion is ideal for indoor and outdoor use in industrial
plants, warehouses, schools, construction sites, trans-
portation 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)
Features
Description
Specifications subject to change without notice.
© 1995 Bogen Communications, Inc.
54-7759-04D 0904
Reentrant Horn
Loudspeakers
Models SPT30A
and SP308A