The BS-680U speakers have a strong, all-metal body, and are ideally suited for emergency broadcasting (voice alarm system) applications. The 6″ (16cm) double cone speaker unit ensures high-quality sound. They can be quickly and easily installed in either a horizontal or a vertical orientation. Either concealed in-wall wiring or exposed wiring can be used for speaker cable connection. The BS-680U provides two ceramic screw terminal blocks (1 cable to 1 connection type) allow bridge connection. The selectable input impedance can be easily adjusted by changing the top position of the unit’s transformer. Both wall and in-wall mounting are possible. The innovative structural design permits direct wall stud installation with screws.

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TOA BS-680U Bangladesh

Rated Noise Power6 W
Rated Impedance70 V line: 830 Ω (6 W), 1.67 kΩ (3 W), 5 kΩ (1 W)
25 V line: 105 Ω (6 W), 210 Ω (3 W), 650 Ω (1 W)
Sensitivity94 dB (1 W, 1 m) (500 Hz – 5 kHz, pink noise)
Frequency Response150 Hz – 20 kHz (peak -20 dB)
Speaker Component16 cm (6) double cone-type”
UL CodeUL 1480 UUMW, ULC-S541
Applicable CableSolid copper wire: φ0.8 – φ2.0 mm (AWG 20-12)
Standard copper wire: φ0.5 – φ2.0 mm (AWG 20-14)
ConnectionPush-in connector (Bridging terminal)
Operating Temperature-10 °C to +50 °C (14 °F to 122 °F)
FinishBaffle, Cabinet: Steel plate, white (RAL 9010 or equivalent color), powder coating
Grille: Surface-treated steel plate mesh, white (RAL 9010 or equivalent color),
Dimensions310 (W) × 190 (H) × 90 (D) mm (12.2 × 7.48″ × 3.54″)”
Weight2.6 kg (5.73 lb)
AccessoryRubber grommet x2, Speaker mounting screw (4 × 16) x4, Sponge tape x1 sheet (2 pieces)


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