Bosch LC2-PC30G6-4 4" 30W 2-Way Premium-Sound Ceiling Loudspeaker, Single

The LC2-PC30G6-4 is a 4" two-way Premium-sound Ceiling Loudspeaker which provides; wide dispersion, high efficiency, high maximum output, ease-of-installation and wide-range reproduction of music and voice. It consists of a baffle assembly, grille, back-can enclosure, 4" coax two-way loudspeaker and internal output-power matching transformer. The loudspeaker features a waveguide coupled titanium coated dome tweeter.

• 4" coaxial two-way
• Waveguide coupled Ti tweeter
• Full bandwidth overload protection
• Front baffle wattage tap adjustment
• BS 5839-8 and EN 60849 compliant

The rear enclosure provides an optimum internal volume for extended low frequency performance. The loudspeaker utilizes a second order crossover network at 3.3 kHz, with a comprehensive protection circuit to protect the network, woofer and tweeter drivers from excessive power levels. The loudspeaker can be installed optionally with the LC2-PC60G6-10 ceiling subwoofer to enhance the low frequency reproduction down to 45 Hz.

Voice alarm loudspeaker
Voice alarm loudspeakers are specifically designed for use in buildings where performance of systems for verbal evacuation announcements is governed by regulations. The LC2-PC30G6-4 is designed for use in voice alarm systems and is compliant with British Standard BS 5839-8 and EN 60849.

Protection
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. It is standard fitted with a back-can enclosure to increase protection of the cable termination. The loudspeaker has an emergency compliant ceramic screw-terminal block and thermal fuse.

Certifications and approvals
All Bosch loudspeakers are designed to withstand operating at their rated power for 100 continuous hours in accordance with IEC 268-5 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

Mounting
The loudspeaker is secured in ceilings using three integral toggle anchors and has been designed to work together in a wide range of different ceiling constructions. A tile bridge / C-ring is included for safe suspension in a drop ceiling that uses mineral wool or other fiber-based ceiling tiles from 4 to 25 mm (0.16 to 1.0") thick. A circular template for marking a 183 mm (7.188") diameter hole is included with the loudspeaker.

Power setting
The unit has a three-way emergency compliant ceramic terminal block with screw connections (including earth) suitable for loop-through wiring. Four 100 V and five 70 V, primary taps are provided on the matching transformer to allow selection of nominal full-power, half-power, quarter-power, eighth-power radiation (in 3 dB steps) and eight ohm. Selection is done via a convenient switch on the front baffle.