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2 | LHM 0606/xx Ceiling Loudspeaker
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).
120
4.72
162
6.3
165
6.5
199
7.8
LHM 0606/00 Dimensions in mm / inch
120
4.72
165
6.5
199
7.8
LHM 0606/10 Dimensions in mm / inch
0
6W
3W
1.5W
Circuit diagram
3x 4
, 120°
0.16
140
5.5
16
0.63
70.5
2.77
16
0.63
70.5
2.77
4
10dB
90dB
31.5
63
125
Frequency response
30˚
60˚
90˚
120˚
54.5
150˚
2.15
Polar diagram (measured with pink noise)
Octave band sensitivity *
Octave SPL
1W/1m
125 Hz
91.3
250 Hz
85.3
500 Hz
85.3
1000 Hz
85.7
54.5
2000 Hz
90.5
2.15
4000 Hz
98.2
8000 Hz
91.1
A-weighted
-
Lin-weighted
-
Octave band opening angles
Horizontal
125 Hz
180
250 Hz
180
500 Hz
180
250
500
1000
2k
4k
0˚
0˚
0
-10
-20
-20
-10
0
180˚
180˚
250 Hz
500 Hz
1000 Hz
Total octave SPL
1W/1m
-
-
-
-
-
-
90.4
90.4
Vertical
180
180
180
8k
16k
20k
(Hz)
30˚
60˚
90˚
120˚
150˚
2000 Hz
4000 Hz
8000 Hz
Total octave SPL
Pmax/1m
-
-
-
-
-
-
97.1
97.6
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