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  • BS-633at_pn1e.jpg

Wall Speakers


The BS-633AT is wall mount speaker made of ABS resin and can be hooked or mounted directly on the wall. The push-in type input terminal makes cable connections easy and allows bridge wiring. The input impedance can be easily changed by changing the tap position of the transformer from the rear side of the speaker. The BS-633AT has a built-in attenuator and can be connected to a 2-wire and 3-wire systems.

  • Ideally suited for BGM and announcements
  • Compact design
  • Quick and easy installation
  • High cost-effectiveness
  • A push-in terminal allows easy cable connections and bridge wiring
  • Built in attenuator
Rated Input
6 W (100 V line), 3 W (70 V line)
Rated Impedance
100 V line: 1.7 kΩ (6 W), 3.3 kΩ (3 W)
70 V line: 1.7 kΩ (3 W), 3.3 kΩ (1.5 W)
91 dB (1 W, 1 m)
Frequency Response
120 - 15,000 Hz (-20 dB)
Speaker Component
12 cm (5) cone-type
3 W: OFF, 1 (-12 dB), 2 (-6 dB), 3 (0 dB)
6 W: OFF, 1 (-13 dB), 2 (-7 dB), 3 (0 dB)
Mounting Hole
Case front mount: 184 mm (7.24)
Fixing hole mount: 120 mm (4.72)
Cable Requirements
600 V vinyl-insulated cable (IV wire or HIV wire)
Solid copper wire: Φ0.8 - Φ1.6 mm (equivalent to AWG 20 - 14)
7-core twisted copper wire: 0.75 - 1.25 m㎡ (equivalent to AWG 18 - 16)
Push-in connector (bridging terminal)
Operating Temperature
-10℃ to +50℃ (14℉ to 122℉)
Case: ABS resin, off-white
Rear board: Hard board
173 (W) x 195 (H) x 101 (D) mm (6.81 x 7.68" x 3.98")
(excluding volume control)
Wall Mounting Dimensions
Case front mount: 184 mm (7.24)
Fixing hole mount: 120 mm (4.72)
810 g (1.79 lb)
Included Accessories
Speaker mounting screw (4 x 35 (0.16 x 1.38") … 2

Please download Datasheet to access full specifications.

The speaker shall be a 5" (12cm) cone-type speaker suitable for wall mounting. Cable connection shall be by means of a push-in connector (bridging terminal). The speaker shall include a transformer having multiple taps(3W, 6W at 100V and 1.5W, 3W at 70V) adjustable. The output sound pressure level at a distance of 1m with a 1W input level applied shall be 91 dB SPL. The speaker shall have a frequency response of 120 – 15,000Hz (-20dB). The speaker shall have a built-in attenuator, enabling it to be connected to a 2-wire and a 3-wire system. The speaker enclosure shall be constructed of ABS resin. The speaker shall be available in off-white colour. The unit shall have dimensions of 173 (W) x 195 (H) x 101 (D) mm (6.81” x 7.68” x 3.98”) (excluding volume control) and a weight of 810 g (1.79 lbs.).
The speaker shall be a TOA model BS-633AT.

  • BS-633at_pn1e.jpg

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