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SPT30A

30 Watt, 25V or 70V Reentrant Horn Loudspeakers

The Bogen SPT30A is a compact, high intelligibility, reentrant type loudspeaker, 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. Screw terminals make installation fast and easy.

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.
 

 30 Watt, 25V or 70V Reentrant Horn Loudspeakers
Engineered to simplify installation (with a uniquely designed all-purpose mounting bracket) and field maintenance (with a self-aligning, field replaceable diaphragm), use of Bogen horn-type loudspeakers saves both time and money.

Speaker and mounting bracket are handsomely finished in textured mocha enamel. Diameter is 11" with a depth of 10-1/2". A beam clamp is also available (BC1), as an option.

Features:

  • High intelligibility and efficiency; ideal for both one-way and talkback applications
  • Weatherproof, all metal construction
  • 30 watts; 25/70 volt operation
  • Variable-tap impedance selector on SPT30A
  • Beam clamp available (BC1)

Technical Specifications

Power Rating (RMS): 30 watts continuous, 40 watts equalized
Frequency Response: 225Hz to 14kHz
Impedance: 25/70 volts
Sound Pressure Level: 125dB @ four feet on axis with 30 watt input @ 1000Hz
Dispersion: 100º
Sensitivity as Microphone: -22dBm [Ref: 10 dynes/cm2]
Dimensions: 11" Diameter x 10-1/2"D
Shipping Weight: 6 lbs.
Finish: Textured mocha enamel
Impedance Selector Switch Settings:
(SPT30A)		 25V @ 15, 7.5, 3.7, 1.8 watts
70V @ 30, 15, 7.5, 3.7, 1.8 watts

Sound Pressure Level in dB @ 1000Hz:

Input
Watts:		 Feet on Axis
4 8 16 32 64
30 125 119 113 107 101
15 122 116 110 104 98
7.5 119 113 107 101 95
3.7 116 110 104 98 92
1.8 113 107 101 95 89
 

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