Bosch LH2-UC15E Specsheet
Communications Systems | LH2-UC15E Horn loudspeaker, 15W, marine
LH2-UC15E Horn loudspeaker, 15W,
marine
www.boschsecurity.com
u Suitable for marine and industrial applications in
humidity-, chlorine- and salty environments
The Horn Loudspeaker LH2‑UC15E is specifically
designed for excellent sound reproduction in marine
applications and other industrial environments.
The housing is rugged, water- and 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
u Glass reinforced polyester housing with
fire‑retardant properties
u Water– and dust-protected to class IP67
u Provisions for internal mounting of the optional
supervision boards
u Type 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.
302 mm (11.89”)
121 mm (4.76”)
3 mm (0.12”)
212 mm (8.35”)
60 mm (2.36”)
152 mm (5.98”)
111 mm (4.37”)
7 mm (0.28”)
7.5 W
1.87 W
1.87 W 3.75 W
3.75 W
15 W7.5 W
NC
15 W
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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.
Dimensions in mm (inch)
Circuit diagram
EQ setting
Frequency response
To meet EN54‑24 requirements, below stated 1/3
octave band equalization is required:
1/3 octave band (Hz)
1250 Hz -2 dB
1600 Hz -3 dB
2000 Hz -1 dB
6300 Hz +3 dB
Polar diagrams (measured with pink noise)
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