Bosch DCN Next Generation Service Manual download pdf (Page 11)

2.4 LBB 4149/90 LBB 4149/95 Pluggable microphones

The LBB 4149/90 and LBB 4149/95 are unidirectional

electret microphones with an adjustable stem for use with

LBB 4120 interpreter desk.

Product Variants:

• LBB 4149/90: short stem

• LBB 4149/95: long stem

Features and benefits

• Unidirectional electret microphone

• Adjustable stem

• Combines high acoustic quality and good sensitivity with low

sensitivity for undesired sounds caused by touching and tick-

ing on the table or unit surface.

• Built-in plop and windshield

• Slim and attractive design

• Fast and reliable connection is assured via the 6-pole con-

nector.

Controls and indicators

• Red light emitting light ring around the microphone head

Interconnection

• 6-pole connector

Performance

Sensitivity nominal level at 85 dB SPL, max

level 110 db SPL at < 3% THD

Frequency response 100 Hz – 16 kHz

Transducer type electret

Directional pattern cardiod

Equivalent noise level 24 dB (A)

SNR 60 dB

Physical characteristics

Stem length LBB 4149/90 310 mm (12.2 in)

LBB 4149/95 480 mm (18.9 in)

Weight LBB 4149/90 110 g (0.24 lb)

LBB 4149/95 125 g (0.28 lb)

Mounting 6-pole connector

10 | Interpretation and Language Distribution | DCN Next Generation Interpretation System Data Brochure

2.5 LBB 4124/00 Channel Selector Panel for 32 Channels

The LBB 4124/00 is a compact and stylish single-user

audio channel selector for listening by headphone to up

to 32 high quality audio channels used for distribution of

interpretation and floor channels.

Controls and indicators

• No audio output until the headphone is connected.

• Automatically adapts to available channels

• Stylish and modern design

• Built-in “Silent” function; no audio output until one of the

keys has been pressed to eliminate audible noise from the

headphones when not in use.

• Upon insertion of a headphone the default “floor” channel

(channel 0) is selected with a comfortable headphone vol-

ume and the dimmed backlighting is activated.

• Flush mountable in table-tops, on top or at the front, or in

arm rests of seats.

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Bosch DCN Next Generation Service Manual Page 11

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