Communications Systems | LH2-UC15E Horn loudspeaker, 15W, marine
LH2-UC15E Horn loudspeaker, 15W, marine
www.boschsecurity.com
The Horn Loudspeaker LH2 UC15E is specifically designed for excellent sound reproduction in marine applications and other industrial environments.
The housing is rugged, waterand dust-protected, and resistant to the corrosive effects of seawater and most industrial atmospheres.
The horn loudspeaker is made from an UV stable, glass reinforced polyester (GRP). This strong, fire-retardant and corrosion resistant material is chemical resistant and thermally stable, making it ideal for even the harshest environments. The horn is standard supplied with a stainless steel mounting bracket.
Functions
The horn loudspeaker is standard supplied with a sturdy mounting bracket allowing the sound beam to be accurately directed.
The mounting bracket has a ratchet facility to ensure it stays correctly positioned.
The connection cable is fed out through an ABS cable gland (PG13.5 standard supplied) in the rear cover, which can be removed for entering the inside
uSuitable for marine and industrial applications in humidity-, chlorineand salty environments
uGlass reinforced polyester housing with fire retardant properties
uWater– and dust-protected to class IP67
uProvisions for internal mounting of the optional supervision boards
uType approval certified EN 60945 and EN54 24 certified
connection terminal. For loop through connection, the rear cover is fitted with a second hole (covered with a blanking plug as standard supplied).
The horn loudspeaker includes a transformer for both 70 V and 100 V input voltage, with taps on the primary winding for different power settings.
Nominal full power, half power, quarter power or eight power radiation (i.e. in 3 dB steps) can easily be selected by connecting to the appropriate terminal of the 6 way screw terminal block.
The horn loudspeaker has built in protection to ensure that, in the event of a fire, damage to the loudspeaker does not result in failure of the circuit to which it is connected. In this way, system integrity is maintained; ensuring loudspeakers in other areas can still be used to inform people of the situation.
The horn loudspeaker has ceramic screw terminal connection blocks, thermal fuse, heat resistant high temperature wiring and has a provision for internal mounting of the optional line/loudspeaker supervision boards.
2 | LH2-UC15E Horn loudspeaker, 15W, marine
For enabling loudspeaker supervision, a wire loop from the secondary side of the horn loudspeaker is available in the connection area. This wire loop is normally closed, but when used with the supervision board, it is cut and connected.
|
|
302 MM (11.89”) |
|
MM (8.35”) |
|
|
212 |
(5.98”) |
|
|
MM |
|
3 MM (0.12”) |
152 |
|
|
7 MM (0.28”) |
121 MM (4.76”) |
|
|
|
MM (2.36”) |
MM (4.37”) |
|
60 |
111 |
Dimensions in mm (inch) |
|
|
70 V |
100 V |
|
0 |
0 |
|
15 W |
NC |
|
|
|
8 |
7.5 W |
15 W |
|
3.75W 7.5 W
1.87W 3.75 W NC 1.
Circuit diagram
dB SPL |
120 |
110 |
100 
90 
80 
70 |
|
|
|
|
10 |
100 |
1000 |
10000 |
100000 |
|
|
|
|
Frequency |
Frequency response
To meet EN54 24 requirements, below stated 1/3 octave band equalization is required:
1/3 octave band (Hz) |
EQ setting |
|
|
1250 Hz |
-2 dB |
|
|
1600 Hz |
-3 dB |
|
|
2000 Hz |
-1 dB |
|
|
6300 Hz |
+3 dB |
|
|
|
0 |
350 |
10 |
340 |
20 |
330 |
30 |
320 |
40 |
310 |
50 |
300 |
60 |
290 |
70 |
280 |
80 |
270 |
90 |
260 |
100 |
250 |
110 |
240 |
120 |
230 |
130 |
220 |
140 |
210 |
150 |
200 |
160 |
190 |
170 |
|
180 |
125 |
250 |
500 |
1000 |
|
|
0 |
|
|
350 |
|
10 |
|
340 |
|
20 |
|
330 |
|
30 |
320 |
|
|
40 |
310 |
|
|
50 |
300 |
|
|
60 |
290 |
|
|
70 |
280 |
|
|
80 |
270 |
|
|
90 |
260 |
|
|
100 |
250 |
|
|
110 |
240 |
|
|
120 |
230 |
|
|
130 |
220 |
|
|
140 |
|
210 |
|
150 |
|
200 |
|
160 |
|
190 |
|
170 |
|
|
180 |
|
1000 
2000 
4000 
8000
Polar diagrams (measured with pink noise)
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