Rated 4.9 (120 reviews)
The TOA BS-678BT is a 6W wooden wall speaker for 100V and 70V lines with a built-in volume control, finished in black. It uses a 16 cm double cone driver and can be fitted horizontally or vertically, with cable run concealed in the wall or surface mounted. The attenuator works on 2-wire or 3-wire systems, making it a common choice for offices, classrooms, waiting rooms and shops.
6W
100V line
16 cm
Double cone
94 dB
Sensitivity
Volume
Built in
Features
6W on 100V lines (3W on 70V)
Built-in volume attenuator for 2-wire or 3-wire (override) systems
Transformer taps: 6W, 3W, 1.5W, 0.8W at 100V
16 cm double cone driver
Wooden cabinet
Horizontal or vertical mounting, screwed direct to the wall
Concealed or exposed cable entry
Push-in connector with bridging terminals for loop-through wiring
Specifications
| Rated input | 6W (100V line), 3W (70V line) |
| Taps, 100V | 1.7 kΩ (6W), 3.3 kΩ (3W), 6.7 kΩ (1.5W), 13 kΩ (0.8W) |
| Taps, 70V | 1.7 kΩ (3W), 3.3 kΩ (1.5W), 6.7 kΩ (0.8W), 13 kΩ (0.4W) |
| Sensitivity | 94 dB (1W, 1m, 500 Hz to 5 kHz pink noise) |
| Frequency response | 150 Hz to 20 kHz (peak -20 dB) |
| Driver | 16 cm (6 inch) double cone |
| Connection | Push-in connector, bridging terminal |
| Colour | Black |
| Dimensions (W x H x D) | 250 x 190 x 110 mm (excluding knob) |
| Weight | 1.7 kg |
