TOA BS-678BSB Certified Box Speaker View larger

TOA BS-678BSB Certified Box Speaker

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6W Box speaker White BS5839-8/EN54-24

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The EN 54-24 certified BS-678BSB, is made of wood and can be installed in a vertical or horizontal orientation. Either concealed in-wall wiring or exposed wiring can be used for speaker cable connection.

The speaker structure that permits direct wall-mounting with screws prevents the speaker from falling easily even if an outward force is applied to.

The input impedance can be easily changed by changing the tap position of the transformer. Two built-in 6-inch double cone speaker units deliver high quality sound. The push-in type input connector makes cable connections easy and allows bridge wiring. BS-678B have a built-in attenuator and can be connected to a 2-wire or 3-wire system.


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), 6.7 kΩ (1.5 W), 13 kΩ (0.8 W)
70 V line: 1.7 kΩ (3 W), 3.3 kΩ (1.5 W), 6.7 kΩ (0.8 W), 13 kΩ (0.4 W)
Sensitivity 94 dB (1 W, 1 m) (500 Hz – 5 kHz, pink noise)
Frequency Response 150 Hz – 18 kHz (peak -20 dB)
Speaker Component 16 cm (6″) double cone-type
Connection Ceramic screw terminals(bridging terminal)
Finish Baffle: Baffle: HIPS, black
Cabinet: Particle board with pvc sheet, white
Grille: Surface-treated steel plate net, white
Dimensions 250 (W) × 190 (H) × 108 (D) mm
Weight 1.7 kg (3.75 lb)
Certificate EN54-24 0359-CPD-103 Type A, ISO 7240-24


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TOA BS-678BSB Certified Box Speaker

TOA BS-678BSB Certified Box Speaker

6W Box speaker White BS5839-8/EN54-24