Specifications, Frequency response (1 w, 4 m) – Toa BS-678BSW User Manual

Page 5

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7. SPECIFICATIONS

Notes
The design and specifications are subject to change without notice for improvement.
The Specifications data was measured in an anechoic chamber, according to EN 54-24.
Reference axis: Axis is on the center of grill surface and perpendicular to the grill surface.
Reference plane: Plane is on the grill surface and perpendicular to the reference axis.
Horizontal plane: Plane is containing the reference axis and perpendicular to the reference plane.

6. FREQUENCY RESPONSE (1 W, 4 m)

50

20

100

500

50

1 k

5 k

Frequency-SPL

10 k

20 k [Hz]

60

70

80

90

[dB]

Model

BS-678BSB

BS-678BSW

Standards

Certified to the European Standard EN 54-24: 2008
Loudspeaker for voice alarm systems
for fire detection and fire alarm systems
Certified to the International Standard ISO 7240-24: 2010
Sound-system loudspeaker for fire detection and fire alarm systems
In compliance with the British Standard BS-5839-8: 2008 14.8

Environment Type

Type A

Rated Noise Power

6 W (100 V line), 3 W (70 V line)

Rated Impedance

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)

Sensitivity

94 dB (1 W, 1 m, 500 Hz to 5 kHz pink noise)
92 dB (1 W, 1 m, 100 Hz to 10 kHz pink noise)
80 dB (1 W, 4 m, 100 Hz to 10 kHz pink noise)

Max. SPL

98 dB (6 W, 1 m, 100 Hz to 10 kHz pink noise)
86 dB (6 W, 4 m, 100 Hz to 10 kHz pink noise)

Frequency Response

150 Hz – 18 kHz

Coverage Angle (–6 dB)

Horizontal: 360° (500 Hz), 135° (1 kHz), 130° (2 kHz), 70° (4 kHz)
Vertical:

330° (500 Hz), 160° (1 kHz), 135° (2 kHz), 70° (4 kHz)

Speaker Component

16 cm (6.5") cone

Cable Connection

Screw terminal (steatite)

Applicable Cable Size

Conductor: Solid wire or 7-core wire

0.8 – 7 mm

2

(AWG18 – 9) for solid wire,

0.8 – 4 mm

2

(AWG18 – 11) for 7-core wire

Finish

Baffle

HIPS, black (RAL 9011 or equivalent

HIPS, off white (RAL 9010 or

color)

equivalent color)

Cabinet

Particle board with PVC sheet,

Particle board with PVC sheet, off

black (RAL 9011 or equivalent color)

white (RAL 9010 or equivalent color)

Grill

Surface-treated steel plate net,

Surface-treated steel plate net, off

black (RAL 9011 or equivalent color)

white (RAL 9010 or equivalent color)

Dimensions

250 (w) x 190 (h) x 108 (d) mm (9.84" x 7.48" x 4.25")

Weight

1.7 kg (3.75 lb)

Accessories

Tapping screw 4 x 35 ..... 2, Tapping screw 3 x 16 ..... 2

EN 54-24
11
0359-CPD-0103

0359

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