BS-678/678T/678B/678BT Wall Mount Speaker System - Eltek

BS-678/678T/678B/678BT
Wall Mount Speaker System
APPEARANCE AND
DIMENSIONAL DIAGRAM
BS-678/678B
R6 (R0.24")
VP-1061/1121
Top View
250 (9.84")
28.3 (1.11")
3 – ø20 (ø0.79")
110 (4.33") 83.5 (3.29")
BS-678
VP-1241/1361
BS-678T
190 (7.48")
R6 (R0.24")
83.5 (3.29")
Fron View
3 – ø5 (ø0.2")
RearView
Wiring Diagram
BS-678B
HOT
(+)
COM
(–)
Bridge
Input
Matching
connector
transformer
HOT(black) 13kΩ
(HOT)
6.7kΩ 8Ω
3.3kΩ
1.7kΩ
0
(COM)
COM
COM(white)
DESCRIPTION
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. The 6" (16cm) double cone speaker unit ensures
high-quality sound, making the BS-678 models ideal for BGM and
announcement applications. Model options include white or black
enclosures and with or without attenuator. The BS-678 can be
installed in either a horizontal or a vertical orientation. Its structure
permits direct wall installation with supplied screws. The front baffle
can be easily mounted on or removed from the cabinet by using the
V-shaped spring attached to the baffle.
BS-678T/678BT
R6 (R0.24")
Top View
250 (9.84")
Front View
190 (7.48")
10
(0.39")
28.3 (1.11")
3 – ø20 (ø0.79")
110 (4.33") 83.5 (3.29")
R6 (R0.24")
83.5 (3.29")
3 – ø5 (ø0.2")
RearView
FEATURES
• Stylish, compact and unobtrusive design
• Quick and easy installation, which saves time on setting-up
• High cost-effectiveness
• Horizontal / vertical installation
• Ideally suited for BGM and announcements
• Equipped with an attenuator (BS-678T/678BT)
Bottom View
Wiring Diagram
3-wire system
(N) (R) (C)
Normal
Emergency
Common
Input
HOT(black) Matching
connector Attenuator
transformer
13kΩ
N
(N) SP 6.7kΩ
8Ω
3.3kΩ
R
(R)
1.7kΩ
0
COM
(C)
COM(white)
2-wire system
HOT
(+)
COM
(–)
Input
Matching
connector Attenuator HOT(black)
transformer
N SP 13kΩ
(N)
6.7kΩ
8Ω
3.3kΩ
R
(R)
1.7kΩ
0
COM
(C)
COM(white)
Bridge
Bridge
(R-C SHORT)
TOA Corporation BS-678/678T/678B/678BT 1/3

CHARACTERISTIC DIAGRAMS
Polar Response (Horizontal)
30°
0°
10
0
330°
30°
0°
10
0
330°
30°
0°
10
0
330°
SPL vs. Frequency
110
100
90
60°
-10
-20
-30
300°
60°
-10
-20
-30
300°
60°
-10
-20
-30
300°
SPL (dB)
80
70
-40
-40
-40
60
90°
500Hz
400Hz
315Hz
270°
90°
270°
1000Hz
800Hz
630Hz
90°
270°
2000Hz
1600Hz
1250Hz
50
40
60°
30°
0°
10
0
-10
-20
330°
300°
60°
30°
0°
10
0
-10
-20
330°
300°
60°
30°
0°
10
0
-10
-20
330°
300°
30
20 50 100 500 1k 5k 10k 20k
Frequency (Hz)
Beamwidth vs. Frequency
-30
-30
-30
90°
30°
-40
0°
10
0
-10
330°
270°
4000Hz
3150Hz
2500Hz
Polar Response (Vertical)
90°
30°
-40
0°
10
0
-10
330°
270°
8000Hz
6300Hz
5000Hz
90°
30°
-40
0°
10
0
-10
330°
270°
16000Hz
12500Hz
10000Hz
Beamwidth (deg)
200
100
50
10
20 50 100 500 1k 5k 10k 20k
Frequency (Hz)
Hor.
Ver.
60°
-20
-30
-40
300°
60°
-20
-30
-40
300°
60°
-20
-30
-40
300°
Directivity Factor vs. Frequency
90°
500Hz
400Hz
315Hz
270°
90°
270°
1000Hz
800Hz
630Hz
90°
270°
2000Hz
1600Hz
1250Hz
20
60°
30°
0°
10
0
-10
-20
330°
300°
60°
30°
0°
10
0
-10
-20
330°
300°
60°
30°
0°
10
0
-10
-20
330°
300°
Directivity Factor (Q)
10
5
-30
-30
-30
-40
-40
-40
90°
270°
4000Hz
3150Hz
2500Hz
90°
270°
8000Hz
6300Hz
5000Hz
90°
270°
16000Hz
12500Hz
10000Hz
10
20 50 100 500 1k 5k 10k 20k
Frequency (Hz)
SPECIFICATIONS
Model No. BS-678 BS-678T BS-678B BS-678BT
Rated Input
6W (100V line), 3W (70V line)
Rated Impedance
100V line: 1.7kΩ (6W), 3.3kΩ (3W), 6.7kΩ(1.5W), 13kΩ (0.8W)
70V line: 1.7kΩ (3W), 3.3kΩ (1.5W), 6.7kΩ(0.8W), 13kΩ (0.4W)
Sensitivity (1W, 1m)
94dB (500Hz – 5kHz, pink noise)
Frequency Response
150Hz – 20kHz (peak –20dB)
Speaker Component
6" (16cm) double cone-type
Applicable Cable
600V vinyl-insulated cable (IV wire or HIV wire)
Solid wire: ø0.8 – ø1.6mm (equivalent to AWG 20 – 14)
7-core twisted wire: 0.75 – 1.25mm 2 (equivalent to AWG 18 – 16)
Connection
Push-in connector (bridging terminal)
Attenuation — OFF, 1 (-12dB), 2 (-6dB), 3 (0dB) — OFF, 1 (-12dB), 2 (-6dB), 3 (0dB)
Finish Baffle HIPS resin, off-white (RAL 9010 or equivalent color) HIPS resin, black (RAL 9011 or equivalent color)
Cabinet Particle board with pvc sheet, off-white (RAL 9010 or equivalent color) Particle board with pvc sheet, black (RAL 9011 or equivalent color)
Grille Surface-treated steel plate net, off-white (RAL 9010 or equivalent color) Surface-treated steel plate net, black (RAL 9011 or equivalent color)
Dimensions
250 (W) × 190 (H) × 110 (D) mm (9.84" × 7.48" × 4.33") (excluding volume control knob)
Weight
1.7kg (3.75 lb)
Accessory Speaker mounting screw (4 × 35 (0.16" × 1.38")) × 2
TOA Corporation BS-678/678T/678B/678BT 2/3

ARCHITECTURAL AND ENGINEERING SPECIFICATIONS
BS-678/678B
The speaker shall be a 6" (16cm) double cone-type speaker suitable for
wall mounting in vertical or horizontal orientation. Cable connection,
with either concealed in-wall wiring or exposed wiring, shall be by
means of a push-in connector (bridging terminal). Its front baffle should
be easily mounted on or removed from the cabinet by using the V-
shaped spring attached to the baffle.
The speaker shall include a transformer having multiple taps (0.8W,
1.5W, 3W, 6W at 100V and 0.4W, 0.8W, 1.5W, 3W at 70V) adjustable.
The output sound pressure level at a distance of 1m with a 1W input
level applied shall be 94 dB SPL. The speaker shall have a frequency
response of 150Hz – 20kHz (-20dB).
The speaker enclosure shall be constructed of particle board, with a
pvc sheet, and the baffle of HIPS resin. The grille shall be surfacetreated
steel plate net. The speaker shall be available in off-white or
black color. The unit shall have dimensions of 250 (W) × 190 (H) × 110
(D) mm (9.84” × 7.48” × 4.33”), and a weight of 1.7 kg (3.75 lb).
The speaker shall be a TOA model BS-678/BS-678B.
BS-678T/678BT
The speaker shall be a 6" (16cm) double cone-type speaker suitable for
wall mounting in vertical or horizontal orientation. Cable connection,
with either concealed in-wall wiring or exposed wiring, shall be by
means of a push-in connector (bridging terminal). Its front baffle should
be easily mounted on or removed from the cabinet by using the V-
shaped spring attached to the baffle.
The speaker shall include a transformer having multiple taps (0.8W,
1.5W, 3W, 6W at 100V and 0.4W, 0.8W, 1.5W, 3W at 70V) adjustable,
for easy changing of input impedance by changing the tap. The output
sound pressure level at a distance of 1m with a 1W input level applied
shall be 94 dB SPL. The speaker shall have a frequency response of
150Hz – 20kHz (-20dB). The speaker shall have a built-in attenuator
enabling connection to a 2-wire or 3-wire system.
The speaker enclosure shall be constructed of particle board, with a
pvc sheet, and the baffle of HIPS resin. The grille shall be surfacetreated
steel plate net. The speaker shall be available in off-white or
black color. The unit shall have dimensions of 250 (W) × 190 (H) × 110
(D) mm (9.84” × 7.48” × 4.33”), and a weight of 1.7 kg (3.75 lb).
The speaker shall be a TOA model BS-678T/BS-678BT.
TOA Corporation BS-678/678T/678B/678BT 3/3
TOA Corporation
www.toa.jp
Specifications are subject to change without notice.
(0903) 833-52-384-8A u