Toa BS-20 Bedienungsanleitung

Andere Handbücher für BS-20

1

Dieses Handbuch passt für folgende Modelle

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Inhaltsverzeichnis

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(Operating instructions)

SPLASHPROOF SPEAKER SYSTEM

Model BS-20W

US

General description

The TOA BS-20W is a splashproof type speaker system and incorpo-

rates a 5.2 inch (13cm) woofer and a piezo driver unit with constant

directivity (CD) horn ensuring a uniform sound dispersion pattern (30°

horizontally and 90° vertically) especially for railway station platform

application.

Its sealed type of enclosure made of ABS resin and finished painting

for protection of ultraviolet rays assures splashproof capabilities, and

also its speaker unit is waterproof.

Applications include high humidity/temperature areas as well as out-

doors or under the eaves where the speaker is likely to be exposed

to rain.

TOA Corporation

Installation

Dimensional diagram for mounting the bracket

The speaker weight 8.0 Ibs. (3.6 kg).

If you fear that the ceiling or the beam will not stand the speaker weight, install the

speaker after fully supporting with reinforcement at installation places.

Changing the wattage (impedance)

Remove the waterproof cap at the side where the woofer is

attached.

Select the desired impedance (wattage) by rotating the rotary

switch with a flat head screwdriver.

After setting the impedance, be sure to replace the cap as it

keep's the speaker splashproof.

(Any change in impedance maintains the siren sound pressure

level 90dB/m or better.)

The BS-20W is factory-wired to 20 W

Polarities: black (HOT), white (COLD).

(70V line)

Specifications and Characteristic diagrams

Type:

Sealed type

Speaker for Mid/Low frequency:

One 5.2 in. (13cm) dia. splashproof cone

speaker

Speaker for High frequency:

CD horn (30° horizontal by 90° vertical) plus

splashproof piezo driver unit

Rated power input:

20W (Cont.PGM 60W at 8 ohms)

Nominal impedance:

245 (20W), 490 (10W) and 980 (5W),

8

Output sound pressure level:

94dB/w/m

Siren sound pressure level

(Siren SPL classification):

90dB or better (1w/1m), Code "A"

Frequency response:

100 Hz ~ 20 kHz

Ambient temperature:

-4°F~+131°F (-20°C ~ +55°C)

Material & Finish:

Enclosure: ABS resin, paint

Ranching net/fixing angle: Zinc-coated

steel plate, paint

Angle bolts: Stainless steel

Dimensions:

13.5(W)x7.9(H)x6.9(D) in.

342(W)x200(H)x175(D) mm

Weight:

8.0

Ibs.

(3.6

kg)

Specifications are subject to exchange without notice.

TOACorporation

KOBE, JAPAN

133-01-311-9A

1 kHz

2 kHz

5 kHz

Polar response

horizontal

vertical

Frequency response

(Anechoic chamber, 1W/1m, 1/3 octave pink noise)

Impedance

Wattage

Precaution