LC2-PC30G6-4 Premium-sound Ceiling Loudspeaker 30W
Product Overview
The Bosch LC2-PC30G6-4 is a 4-inch two-way Premium-sound Ceiling Loudspeaker designed for superior audio reproduction in various environments. It offers wide dispersion, high efficiency, and high maximum output, combined with ease of installation. The loudspeaker is capable of wide-range reproduction of both music and voice.
It comprises a baffle assembly, grille, back-can enclosure, a 4-inch coaxial two-way loudspeaker, and an internal output-power matching transformer. A key feature is its waveguide-coupled titanium-coated dome tweeter, enhancing high-frequency clarity.
The rear enclosure is engineered to provide an optimal internal volume, ensuring extended low-frequency performance. The loudspeaker utilizes a second-order crossover network operating at 3.3 kHz, incorporating a comprehensive protection circuit to safeguard the network, woofer, and tweeter drivers from excessive power levels.
For enhanced low-frequency reproduction down to 45 Hz, the LC2-PC30G6-4 can optionally be installed with the LC2-PC60G6-10 ceiling subwoofer.
Key Features:
- 4-inch coaxial two-way design
- Waveguide coupled Ti tweeter
- Full bandwidth overload protection
- Front baffle wattage tap adjustment
- BS 5839-8 and EN 60849 compliant
Functions
Voice Alarm Loudspeaker
Voice alarm loudspeakers are specifically designed for use in buildings where system performance for verbal evacuation announcements is governed by regulations. The LC2-PC30G6-4 is engineered for voice alarm systems and complies with British Standard BS 5839-8 and EN 60849.
Protection
The loudspeaker features built-in protection mechanisms to prevent circuit failure in the event of a fire. This ensures system integrity, allowing loudspeakers in other areas to continue functioning and informing occupants. It is equipped with a back-can enclosure to enhance protection of the cable termination. The unit includes an emergency-compliant ceramic screw-terminal block and a thermal fuse.
Certifications and Approvals
Bosch loudspeakers are designed to withstand operating at their rated power for 100 continuous hours, adhering to IEC 268-5 Power Handling Capacity (PHC) standards. Bosch also developed the Simulated Acoustical Feedback Exposure (SAFE) test, demonstrating the ability to withstand double their rated power for short durations. This commitment ensures improved reliability under extreme conditions, leading to higher customer satisfaction, longer operating life, and reduced risk of performance deterioration.
| Category | Compliance |
|---|---|
| Safety | according to EN 60065 |
| Emergency | according to BS 5839-8 / EN 60849 |
| Region | Certification |
|---|---|
| Europe | CE |
Installation/Configuration Notes
Mounting
The loudspeaker is secured in ceilings using three integral toggle anchors and is designed for compatibility with a wide range of ceiling constructions. A tile bridge / C-ring is included for safe suspension in drop ceilings utilizing mineral wool or other fiber-based ceiling tiles ranging from 4 to 25 mm (0.16 to 1.0 in.) thick. A circular template for marking a 183 mm (7.188 in.) diameter hole is provided with the loudspeaker.
Power Setting
The unit features a three-way emergency-compliant ceramic terminal block with screw connections (including earth) suitable for loop-through wiring. The internal matching transformer provides four 100 V and five 70 V primary taps. These taps allow selection of nominal full-power, half-power, quarter-power, eighth-power radiation (in 3 dB steps), and eight ohm impedance. Selection is made via a convenient switch located on the front baffle.
Technical Specifications
Electrical
| Specification | Value |
|---|---|
| Maximum power | 50 W |
| Rated power | 30/15/7.5/3.75 W (1.88 W only, 70 V) |
| Sound pressure level at 30 W/1W (1 kHz, 1 m) | 101/86 dB (SPL) |
| Effective frequency range (-10 dB) | 65 Hz to 20 kHz |
| Coverage (conical) | 130° |
| Rated voltage | 70 V or 100 V |
| Rated impedance | 167 or 333 or 8 ohm |
| LF transducer | 100 mm (4 in.) Polypropylene cone |
| HF transducer | 19 mm (0.75 in.) Ti Mylar laminate |
| Connector | 3-pole screw terminal block |
Mechanical
| Specification | Value |
|---|---|
| Diameter | 210 mm (8.3 in) |
| Maximum depth | 176 mm (6.9 in) |
| Ceiling thickness | 4 to 25 mm (0.16 to 1.00 in.) |
| Mounting cut-out | 183 + 5 mm (7.188 + 0.20 in.) |
| Material | Baffle: ABS (UL94V0), Back-can: Zinc-plated steel, Grille: Powder coated steel |
| Weight | 2.7 kg (6.0 lb) |
| Color | White (RAL 9010) |
Environmental
| Specification | Value |
|---|---|
| Operating temperature | -25 °C to +55 °C (-13 °F to +131 °F) |
| Storage temperature | -40 °C to +70 °C (-40 °F to +158 °F) |
| Relative humidity | <95% |
Visual Descriptions
Loudspeaker Image: A photograph shows the Bosch LC2-PC30G6-4 ceiling loudspeaker, featuring a circular design with a metal grille and a central tweeter.
Circuit Diagram: A schematic diagram illustrates the internal electrical components of the loudspeaker, including a passive limiter (1), a low-pass filter (2), a high-pass filter (3), and a thermal fuse (4).
Frequency Response and Impedance Graph: This graph displays the loudspeaker's performance characteristics. The primary curve shows Sound Pressure Level (SPL) in decibels (dB) against frequency in Hertz (Hz) for a 1W/1m input, measured in half-space. Secondary curves indicate impedance in Ohms against frequency in Hz.
Beamwidth Graph: This graph illustrates the directivity of the loudspeaker. It plots the -6dB beamwidth in degrees against frequency in Hz, showing both horizontal and vertical beamwidth characteristics.
Dimensions Diagram: A diagram provides the physical dimensions of the loudspeaker in both inches and millimeters. Key dimensions include the overall diameter, maximum depth, and the recommended mounting cut-out diameter.
Power Setting Diagram: A diagram shows the front baffle of the loudspeaker, highlighting the switch used for selecting the power output (e.g., 30W, 15W, 7.5W, 3.75W, 1.88W for 70V) and the 8-ohm setting.
Parts Included
- 2 x LC2-PC30G6-4 Premium-sound Ceiling Loudspeaker
- 1 x 183 mm (7.188 in.) circular cut-out template
- 1 x Tile bridge / C-ring
- 1 x Paint shield
- 1 x Installation instruction
Ordering Information
Product: LC2-PC30G6-4 Premium-sound Ceiling Loudspeaker 30W
Description: This ceiling loudspeaker is rated at 30 W and features a circular design with a metal grille and an integrated metal back-cover. It includes a 4-inch coax (two-way system) driver and a 3-way ceramic screw terminal block. The package is supplied with a tile bridge/C-ring and is finished in white RAL 9010. It is sold as a set of 2 pieces.
Order Number: LC2-PC30G6-4
Represented By
Americas: Bosch Security Systems, Inc., 12000 Portland Avenue South, Burnsville MN 55337, USA. Phone: +1-800-392-3497, Fax: +1-800-955-6831, Email: audiosupport@us.bosch.com, Website: www.boschsecurity.com
Europe, Middle East, Africa: Bosch Security Systems B.V., P.O. Box 80002, 5617 BA Eindhoven, The Netherlands. Phone: +31 40 2577 284, Fax: +31 40 2577 330, Email: emea.securitysystems@bosch.com, Website: www.boschsecurity.com
Asia-Pacific: Robert Bosch (SEA) Pte Ltd, Security Systems, 11 Bishan Street 21, Singapore 573943. Phone: +65 6571 2808, Fax: +65 6571 2699, Email: apr.securitysystems@bosch.com, Website: www.boschsecurity.asia
China: Bosch (Shanghai) Security Systems Ltd., 201 Building, No. 333 Fuquan Road, North IBP, Changning District, Shanghai 200335 China. Phone: +86 21 22181111, Fax: +86 21 22182398, Website: www.boschsecurity.com.cn
America Latina: Robert Bosch Ltda Security Systems Division, Via Anhanguera, Km 98, Campinas, Sao Paulo, Brazil CEP 13065-900. Phone: +55 19 2103 2860, Fax: +55 19 2103 2862, Email: latam.boschsecurity@bosch.com, Website: www.boschsecurity.com
