The LB20-PC15-4 is a high-performance, two-way, full-range surface mount speaker from Bosch. Designed for background and foreground music, paging, and sound reinforcement, it is ideal for both indoor and outdoor applications. This speaker features advanced acoustic engineering, robust weather resistance, and an innovative mounting system, making it an exceptional solution for professional sound installations.

Key Features

• Innovative Mount System: Enables quick, reliable installations with 90° horizontal and 45° vertical adjustments.
• Weather Resistant Design (IP54): Suitable for outdoor environments with robust protection against sun, salt, and moisture.
• Extended Low-Frequency Performance: A 4" (102 mm) woofer delivers a frequency response down to 75 Hz.
• High SPL Output: Maximum calculated SPL of 98.5 dB (104.5 dB peak) for powerful sound.
• Flexible Transformer Taps: Selectable transformer options for 70V/100V distributed lines with power taps from 3.7 W to 15 W.

Applications

The LB20-PC15-4 is designed for use in a variety of environments:

• Commercial Spaces: Restaurants, bars, retail stores, fitness clubs.
• Outdoor Venues: Patios, theme parks, leisure spaces.
• Hospitality: Hotels, conference centers.

Technical Specifications

Acoustics

• Frequency Response:
  • (-3 dB): 100 Hz – 20 kHz
  • (-10 dB): 75 Hz – 20 kHz
• Sensitivity: 86.5 dB (1 W, 100 Hz – 10 kHz, 1 m).
• Max SPL: 98.5 dB continuous, 104.5 dB peak.
• Coverage Angle: 110° horizontal, 110° vertical.

Transducers

• Low-Frequency Driver: 4" (102 mm) polypropylene woofer.
• High-Frequency Driver: 0.75" (20 mm) Ferro fluid-cooled driver.

Transformer Taps

• 70V: 3.7 W, 7.5 W, 15 W.
• 100V: 7.5 W, 15 W.

Power Handling

• Continuous Pink Noise: 15 W (60 W peak).
• Recommended High-Pass Filter: 70 Hz, 24 dB/octave.

Construction

• Material: Fire-rated ABS plastic enclosure.
• Grille: Zinc plated and powder-coated for corrosion resistance.
• Mounting System: Ball-and-socket mechanism with concealed electrical connections.

Weather Resistance

• IP54 Certified: Withstands solar radiation, salt mist, and humidity.
• Tested against IEC environmental standards for durability.

Dimensions and Weight

• Dimensions (H x W x D): 193 mm x 140 mm x 120 mm (7.6 in x 5.5 in x 4.7 in).
• Weight: 1.8 kg (4.0 lbs).
• Shipping Weight (Pair): 5.4 kg (11.9 lbs).

Color Options

• Available in black (RAL 9004) or white (RAL 9003) with paintable finishes.

Certifications and Standards

• CE Compliance: Meets stringent safety and performance standards for the European market.
• Weatherproofing tested per IEC 60068 and IEC 60529 conditions.

Included Accessories

• Mounting Bracket: Pre-assembled for immediate use.
• 4-mm Allen Wrench: Facilitates easy installation and adjustments.

Architectural Specifications

The LB20-PC15-4 features a two-way design with an internal passive crossover. The enclosure is fire-rated, and its mounting system ensures seamless installation with concealed wiring for a professional finish. The speaker system integrates effortlessly into both distributed and direct audio applications, providing robust performance and flexibility for diverse acoustic needs.

The LB20-PC15-4 from Bosch is a versatile, durable, and high-quality solution for surface mount speaker installations in a wide range of environments.