BS-678
Wall Mount Speaker System
DESCRIPTION
FEATURES
The BS-678 is a double-cone type speaker with a wooden cabinet
that has a stylish, compact and unobtrusive design and that delivers
highly cost-effective performance. A push-in type input connector
allows easy cable connections and bridge wiring. The selectable
input impedance can be easily adjusted by changing the tap position
of the unit’s transformer. 6" (16cm) double cone speaker unit ensures
high-quality sound, making the BS-678 ideal for BGM and
announcement applications. It can be installed in either a horizontal
or a vertical orientation. Its structure permits direct wall installation
with screws, making the speaker unit resistant to falling even if
outward force is applied to it.
• Stylish, compact and unobtrusive design
• Quick and easy installation
• High cost-effectiveness
• Horizontal / vertical installation
• Ideally suited for BGM and announcements
SPECIFICATIONS
APPEARANCE AND
DIMENSIONAL DIAGRAM
110 (4.33")
83.5 (3.29")
28.3 (1.11")
83.5 (3.29")
Fron View
RearView
Top View
250 (9.84")
3 – ø20 (ø0.79")
3 – ø5 (ø0.2")
190 (7.48")
R6 (R0.24")
R6 (R0.24")
Rated Input:
6W (100V line), 3W (70V line)
Rated Impedance:
100V line: 1.7k
Ω
(6W), 3.3k
Ω
(3W), 6.7k
Ω
(1.5W),
13k
Ω
(0.8W)
70V line: 1.7k
Ω
(3W), 3.3k
Ω
(1.5W), 6.7k
Ω
(0.8W),
13k
Ω
(0.4W)
Sensitivity (1W, 1m):
94dB (500 – 5,000Hz, pink noise)
Frequency Response:
150 – 20,000Hz (peak –20dB)
Speaker Component:
6" (16cm) double cone-type
Applicable Cable:
600V vinyl-insulated cable (IV wire or HIV wire)
Solid copper wire: ø0.8 – ø1.6mm (equivalent to
AWG 20 – 14)
7-core twisted copper wire: 0.75 – 1.25mm
2
(equivalent to AWG 18 – 16)
Connetion:
Push-in connector (bridging terminal)
Finish:
Baffle: HIPS resin, off-white (RAL 9010 or
equivalent colour)
Cabinet: Particle board with pvc sheet, off-white
(RAL 9010 or equivalent colour)
Grille: Surface-treated steel plate net, off-white
(RAL 9010 or equivalent colour)
Dimensions:
250 (W)
×
190 (H)
×
110 (D) mm
(9.84"
×
7.48"
×
4.33")
Weight:
1.7kg (3.75 lb)
Accessory:
Speaker mounting screw (4
×
35 (0.16"
×
1.38"))
×
2
Wiring Diagram
Bridging
terminal
HOT
HOT(black) 13k
Ω
8
Ω
0
6.7k
Ω
3.3k
Ω
1.7k
Ω
COM
COM(white)
COM
Input
connector
Matching
transformer
Note: When mounting the BS-678 to
plaster board walls be sure to use
sufficient "anchoring type" bolts from
the local hardware store instead of the
supplied screws.
