Toa BS-678 Manuel utilisateur

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")

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 (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 – 1.25mm2

(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) 13kΩ

8Ω

6.7kΩ

3.3kΩ

1.7kΩ

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.

Architect's and Engineer's Specifications

The speaker shall be a 6" (16cm) double cone-type speaker

suitable for wall mounting. Cable connection shall be by means

of a push-in connector (bridging terminal).

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 150 – 20,000Hz

(-20dB).

The speaker enclosure shall be constructed of particle board,

with a pvc sheet, and the baffle of HIPS. The grille shall be

surface-treated steel plate net. The speaker shall be available in

off-white colour. 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.

SPL vs. Frequency

Directivity Factor vs. Frequency

Beamwidth vs. Frequency

110

100

20 50 100 500 1k 5k 10k 20k

Frequency (Hz)

SPL (dB)

200

100

20 50 100 500 1k 5k 10k 20k

Frequency (Hz)

Beamwidth (deg)

Hor.

Ver.

20 50 100 500 1k 5k 10k 20k

Frequency (Hz)

Directivity Factor (Q)

Hor.

Ver.

Specifications are subject to change without notice.

Printed in Japan (0708) 833-52-384-80 u

TOA Corporation

www.toa.jp

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

500Hz

400Hz

315Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

1000Hz

800Hz

630Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

4000Hz

3150Hz

2500Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

8000Hz

6300Hz

5000Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

16000Hz

12500Hz

10000Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

2000Hz

1600Hz

1250Hz

Polar Response (Horizontal)

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

500Hz

400Hz

315Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

1000Hz

800Hz

630Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

4000Hz

3150Hz

2500Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

8000Hz

6300Hz

5000Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

16000Hz

12500Hz

10000Hz

60°

30°

0°

330°

300°

270°

90°

-10

-20

-30

-40

2000Hz

1600Hz

1250Hz

Polar Response (Vertical)

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