The LC3‑UC06E is a general purpose, cost-effective
6 W ceiling loudspeaker, suitable for 100 V connection
with power tapping of: 6, 3, 1.5 and 0.75 Watt.
The optional back‑box LC3‑CBB fully protects the
loudspeaker from dust and dripping water from above,
according IP21C.
The loudspeaker frame, grill and back‑box are
manufactured from self‑extinguishing ABS according to
UL 94V0.
Certifications and approvals
Quality assurance
All Bosch loudspeakers are designed to withstand
operating at their rated power for 100 hours in
accordance with IEC 60268-5 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
improved reliability under extreme conditions, leading
to higher customer satisfaction, longer operating life,
and lessens the chance of failure or performance
deterioration.
Installation/configuration notes
Installation is easy with integral spring arms that
securely hold the ceiling loudspeaker in its cut‑out.
Ceilings from 5 to 25 mm thick can be accommodated.
A template is also provided for accurately marking the
cut-out in ceiling panels.
The 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 loudspeaker has a ceramic screw‑terminal
connection block, thermal fuse and heat‑resistant high
temperature wiring.
Four primary taps for 100 V are provided on the
matching transformer to allow selection of nominal
full‑power, half‑power, quarter‑power and
one‑eight‑power.
The optional back‑box (LC3‑CBB) protects the rear of
the loudspeaker from dust, falling objects, makes the
unit vermin proof and prevents sound traveling via the
ceiling cavity to adjacent areas.
The back‑box is assembled with the loudspeaker by
means of a snap‑in construction and has knock‑out
holes (11 mm) for two rubber grommets (standard
supplied) and for two cable glands (20.5 mm).
Parts included
Technical specifications
Ordering information
LC3-UC06E Ceiling loudspeaker, 6W, spring arms
Ceiling loudspeaker 6 W, circular ABS grille and frame,
ceiling mounted by 2 integral spring arms, EN54-24
certified, white RAL 9010.
Order number LC3-UC06E
Accessories
LC3-CBB Back box for LC3 speaker
Back box for LC3 ceiling speakers, fully protects the
loudspeaker from dust and dripping water, makes the
unit vermin proof and prevents sound traveling via the
ceiling cavity to adjacent areas, white RAL 9010.
Order number LC3-CBB
