Bosch LHM 0606/00 Quick Start Manual

Communications Systems | LHM 0606/xx Ceiling Loudspeaker

LHM 0606/xx Ceiling Loudspeaker

Suitable for speech and music reproduction

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Flush-mounting in ceiling cavity

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Easy to install

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Simple power setting

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Unobtrusive in virtually all interiors

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Complies with international installation and safety

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regulations

The LHM 0606/xx is a general purpose, 6 W, cost-effective
ceiling loudspeaker. The /00 version is screw mounted
and the /10 version is clamp mounted into the ceiling. An
optional fire dome LBC 3080/01 is available.

Functions

An economic flushing-mounting ceiling loudspeaker is
available for general purpose applications. This full range
loudspeaker is suitable for both speech and music
reproduction in shops, department stores, schools,
offices, sports halls, hotels and restaurants.

The speaker assembly consists of a single-piece, 6W dual
cone loudspeaker and frame, with a 100 V, matching
transformer mounted on the back. A circular metal grille is
an integrated part of the front. The appearance and
neutral white color has been selected to be unobtrusive in
virtually all interiors.

Certifications and Approvals

All Bosch loudspeakers are designed to withstand
operating at their rated power for 100 hours in
accordance with IEC 268-5 Power Handling Capacity
(PHC) standards. Bosch has also developed the Simulated
Acoustical Feedback Exposure (SAFE) test to demonstrate
that they can withstand two times their rated power for
short durations. This ensures extra reliability under
extreme conditions, leading to higher customer
satisfaction, longer operating life, and much less chance
of failure or performance deterioration.

Region Certification

Europe CE

Safety acc. to EN 60065

Installation/Configuration Notes

Mounting

The assembly is simply and quickly installed into a hole in
the ceiling cavity. The /00 version is secured with the
three white screws (supplied). The /10 version is secured
by two integral spring-loaded ceiling locking clamps. A
circular template for marking a 165 mm diameter hole is
included with the loudspeaker.

www.boschsecurity.com

2 | LHM 0606/xx Ceiling Loudspeaker

120

16

54.5

70.5

165

199

4.72

6.5

7.8

162

6.3

0.63

2.15

2.77

140

3x 4 , 120°

5.5

0.16

120

16

0.63

54.5

2.15

70.5

2.77

165

6.5
199

7.8

4.72

0

6W

3W

1.5W

4

SPL(dB)

31.5 63 125 250 500 1000 2k 4k 8k 16k 20k
(Hz)

10dB

90dB

250 Hz
500 Hz

1000 Hz

2000 Hz
4000 Hz
8000 Hz

0˚

0

0

-10

-10

-20

-20

30˚ 30˚

60˚ 60˚

90˚ 90˚

120˚

120˚

180˚ 180˚

150˚ 150˚

0˚

Three wires on the matching transformer (primary)
provide for selection of nominal full-power, half-power or
quarter-power radiation.

Fire dome

During a fire, the ceiling cavity in which loudspeakers are
installed can allow flames to spread throughout a
building. To prevent fire entering the caving via the
loudspeaker, the ceiling loudspeaker can be fitted with a
protective steel fire dome (LBC 3080/01). This optional
fire dome is mounted on the loudspeaker assembly using
four self-tapping screws, supplied as standard. There are
four knock-out holes; two (2) for rubber grommets
(supplied) and two (2) for cable glands. (PG13).

Frequency response

LHM 0606/00 Dimensions in mm / inch

LHM 0606/10 Dimensions in mm / inch

Circuit diagram

Polar diagram (measured with pink noise)

Octave band sensitivity *

Octave SPL
1W/1m

Total octave SPL
1W/1m

Total octave SPL
Pmax/1m

125 Hz 91.3 - -

250 Hz 85.3 - -

500 Hz 85.3 - -

1000 Hz 85.7 - -

2000 Hz 90.5

4000 Hz 98.2 - -

8000 Hz 91.1 - -

A-weighted - 90.4 97.1

Lin-weighted - 90.4 97.6

Octave band opening angles

Horizontal Vertical

125 Hz 180 180

250 Hz 180 180

500 Hz 180 180