Toa BS-678 Installation Manual

WALL MOUNT SPEAKER
Thank you for purchasing TOA's Wall Mount Speaker.
Please carefully follow the instructions in this manual to
ensure long, trouble-free use of your equipment.
1. SAFETY PRECAUTIONS
• Before installation or use, be sure to carefully read all the
instructions in this section for correct and safe operation.
• Be sure to follow all the precautionary instructions in this
section, which contain important warnings and/or cautions
regarding safety.
• After reading, keep this manual handy for future reference.
WARNING
Indicates a potentially hazardous situation which, if
mishandled, could result in death or serious personal
injury.
• Install the unit only in a location that can structurally support
the weight of the unit and the mounting bracket. Doing
otherwise may result in the unit falling down and causing
personal injury and/or property damage.
• Do not use other methods than specified to mount the bracket.
Extreme force is applied to the unit and the unit could fall off,
possibly resulting in personal injuries.
• Tighten each nut and bolt securely. Ensure that the bracket
has no loose joints after installation to prevent accidents that
could result in personal injury.

4. SPECIFICATIONS

Rated Input
Rated Impedance
Sensitivity
Frequency Response
Speaker Component
Application Cable
Connection
Finish
Dimensions
Weight
Accessories
Note: The design and specifications are subject to change without notice for improvement.
INSTALLATION MANUAL
BS-678
6 W (100 V LINE), 3 W (70 V LINE)
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)
94 dB at 1 W, 1 m (500 – 5,000 Hz, pink noise)
150 – 20,000 Hz (at 20 dB below peak)
16 cm (6") double cone type
600 V vinyl-insulated cable (IV wire or HIV wire)
Solid wire: ø0.8 –ø1.6 mm (equivalent to AWG 20 – 14)
7-core twisted wire: 0.75 – 1.25 mm
Push-in connector (bridging terminal)
Baffle: HIPS, off white (RAL 9010 or equivalent color)
Cabinet: Particle Board with pvc sheet, off white (RAL 9010 or equivalent color)
Grille: Surface-treated steel plate net, off white (RAL 9010 or equivalent color)
250 (w) x 190 (h) x 110 (d) mm (9.84" x 7.48" x 4.33")
1.5 kg (3.31 lb)
Tapping screw (4 x 35) ................................ 2
CAUTION
Indicates a potentially hazardous situation which, if
mishandled, could result in moderate or minor personal
injury, and/or property damage.
• To avoid electric shocks, be sure to switch off the amplifier's
power when connecting speakers.
• Do not operate the unit for an extended period of time with the
sound distorting. This is an indication of a malfunction, which
in turn can cause heat to generate and result in a fire.
• Do not stand or sit on, nor hang down from the unit as this may
cause it to fall down or drop, resulting in personal injury and/or
property damage.
2. FEATURES
• The BS-678, of which cabinet is made of wood, 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.
3. WIRING DIAGRAM
Input connector
HOT (black)
HOT
COM
COM (white)
(equivalent to AWG 18 – 16)
2
Matching
transformer
13 kΩ
6.7 kΩ
8 Ω
3.3 kΩ
0
1.7 kΩ
COM