Bogen Communications SPT30A
30W Re-Entrant Paging Horn with 25/70V Transformer

OUR PART #  SPT30A


The Bogen SPT30A is a  compact, high intelligibility, reentrant type loudspeaker, designed for one-way or two-way sound and communication systems. The 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 SPT30A has a built-in, variable impedance selector switch for matching the speaker power requirements to a 25V or 70V constant-voltage line.

Bogen SPT30A Features:

  • High intelligibility and efficiency; ideal for both one-way and talk back applications
  • Weatherproof, all-metal construction
  • 30 watts; 25/70 volt 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)

Bogen SPT30A Specifications:

  • Power Rating (RMS):  30 watts continuous, 40 watts equalized
  • Frequency Response:  225 Hz to 14 kHz
  • Impedance:  25/70 volts
  • Sound Pressure Level:  125 dB @ four feet on axis with 30-watt input @ 1000 Hz
  • Dispersion:  100º
  • Sensitivity as Microphone:  -22 dBm [Ref: 10 dynes/cm2]
  • Dimensions:  11" Diameter x 10-1/2" D
  • Weight:  6 lbs
  • Finish:  Textured mocha enamel
  • Impedance Selector Switch settings:
    • 25V:  1.8, 3.7, 7.5, 15 Watts
    • 70V:  1.8, 3.7, 7.5, 15, 30 Watts

Bogen Communications SPT30A
30W Re-Entrant Paging Horn with 25/70V Transformer

OUR PART #  SPT30A

Product Information:

The Bogen SPT30A is a  compact, high intelligibility, reentrant type loudspeaker, designed for one-way or two-way sound and communication systems. The 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 SPT30A has a built-in, variable impedance selector switch for matching the speaker power requirements to a 25V or 70V constant-voltage line.

Bogen SPT30A Features:

  • High intelligibility and efficiency; ideal for both one-way and talk back applications
  • Weatherproof, all-metal construction
  • 30 watts; 25/70 volt 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)

Bogen SPT30A Specifications:

  • Power Rating (RMS):  30 watts continuous, 40 watts equalized
  • Frequency Response:  225 Hz to 14 kHz
  • Impedance:  25/70 volts
  • Sound Pressure Level:  125 dB @ four feet on axis with 30-watt input @ 1000 Hz
  • Dispersion:  100º
  • Sensitivity as Microphone:  -22 dBm [Ref: 10 dynes/cm2]
  • Dimensions:  11" Diameter x 10-1/2" D
  • Weight:  6 lbs
  • Finish:  Textured mocha enamel
  • Impedance Selector Switch settings:
    • 25V:  1.8, 3.7, 7.5, 15 Watts
    • 70V:  1.8, 3.7, 7.5, 15, 30 Watts
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