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
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
LHM 0606/00 Dimensions in mm / inch
120
16
0.63
54.5
2.15
70.5
2.77
165
6.5
199
7.8
4.72
LHM 0606/10 Dimensions in mm / inch
0
6W
3W
1.5W
4
Circuit diagram
SPL(dB)
31.5
63
125
250
500
1000
2k
4k
8k
16k
20k
(Hz)
10dB
90dB
Frequency response
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˚
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
