Datasheet > B-640T

B-640T

更新时间： 2022-12-17 02:29:37

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Installation, Operation and Maintenance Procedures

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B-640T 数据手册

B-640(T)

N-3770 Kragerø

NORWAY

Phone:........ (47) 35 98 56 00

Fax:............ (47) 35 98 56 10

E-mail:.............. dnh@dnh.no

Web-site: ........www.dnh.no

DNH WW Ltd. Phone: ......................................................(44) 1908 275 000

England

Fax: ..........................................................(44) 1908 275 100

E-mail: .......................................................... dnh@dnh.co.uk

DNH GmbH Phone: .....................................................(49) 040 6569 30-0

Germany

Fax: .......................................................(49) 040 6569 30-30

E-mail: .............................................................. dnh@dnh.de

ISO 9001 CERTIFIED

Transformer:

Combined

50 / 100 Volt line

5(White) : 6(Green) 50V

5(White) : 8(Red)

100V

Secondary nominal

tappings:

1 : 4

1 : 3

2 : 4

1 : 2

3 : 4

2 : 3

6,0W

3,0W

2,0W

1,5W

0,9 W

0,5 W

Rec. ceiling hole: ø 215 mm

1W/1m Pink Noise 1/3 octave bands

Material / Colour................................Aluminium / RAL9010

Mounting..................................................... 4 metal strips

Termination .................................................Spring clamps

Weight ...................................................................1,2 kg

IP-rating..........................................................................

Max. / min. amb. temp ...................................90°C / -20°C

Standard version .............................50 / 100 V transformer

Rated / max. power......................................... 6 W / 20 W

SPL 1W/1m..............................................................90 dB

SPL rated power.......................................................97 dB

Effective freq. range ....................................60 – 20000 Hz

Dispersion (-6dB) 1kHz / 4kHz............................ 140° / 50°

Directivity factor, Q...........................................................

Installation, Operation and Maintenance Procedures

ꢀ

When mounting the loudspeaker please ensure that it is re-assembled in the same manner in which it was

received.

Install outer ring into the hole by bending down 4 metal strips. Use nail / screw to prevent the ring from

turning. Connect cable to terminal. Screw the loudspeaker grill clockwise into fixed position.

For optimum performance, always use the correct voltage / power and operate within the frequency limits as

stated.

ꢀ

Take care when loudspeaker is energized (100 V).

This loudspeaker is supplied with a 2 year warranty against defective workmanship.

Most of our products are available in different colours, impedances and power ratings.

DNH reserves the right to alter specifications without notice.

Rev. 26.01.2000

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