The LB20-PC30-5 is a premium 5.25" (133 mm) two-way surface mount speaker from Bosch. With outstanding sound quality, weather-resistant design, and flexible mounting options, it’s perfect for a wide range of indoor and outdoor applications. Ideal for background and foreground music, paging, and sound reinforcement, this speaker is engineered for venues like restaurants, retail spaces, theme parks, and hospitality environments.
Key Features
- Advanced Mounting System: Innovative ball-and-socket design allows 90° horizontal and 45° vertical rotation for versatile installation.
- Outdoor Durability (IP54 Rated): Designed to withstand harsh environments, including sun, salt, and moisture exposure.
- Powerful Low-Frequency Performance: Equipped with a long-throw 5.25" woofer for extended bass response down to 60 Hz.
- High SPL Output: Capable of delivering 109 dB continuous (115 dB peak) SPL.
- Flexible Connectivity: Includes a transformer with 70V/100V taps and an 8 Ω bypass for low-impedance systems.
Applications
The LB20-PC30-5 is suited for various settings, including:
- Commercial Spaces: Restaurants, retail stores, bars, and fitness clubs.
- Outdoor Environments: Patios, theme parks, and leisure areas.
- Hospitality: Hotels, resorts, and conference centers.
Technical Specifications
Acoustics
-
Frequency Response:
- (-3 dB): 85 Hz – 20 kHz
- (-10 dB): 60 Hz – 20 kHz
- Sensitivity: 90 dB (1 W, 100 Hz – 10 kHz, 1 m).
- Max SPL: 109 dB continuous, 115 dB peak.
- Coverage Angle: 90° horizontal, 90° vertical.
Transducers
- Low-Frequency Driver: 5.25" (133 mm) polypropylene woofer.
- High-Frequency Driver: 0.75" (20 mm) Ferro fluid-cooled driver coupled to a waveguide.
Transformer Taps
- 70V: 3.7 W, 7.5 W, 15 W, 30 W.
- 100V: 7.5 W, 15 W, 30 W.
- 8 Ω Bypass: Supported with safety screw protection.
Power Handling
- Continuous Pink Noise: 75 W (300 W peak).
- Recommended High-Pass Filter: 60 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 quick attach and detach operation.
Weather Resistance
- IP54 Certified: Tested for solar radiation, salt mist, and chlorine resistance.
- IEC Standards: Meets multiple environmental durability standards.
Dimensions and Weight
- Dimensions (H x W x D): 255 mm x 180 mm x 154 mm (10.0 in x 7.1 in x 6.0 in).
- Weight: 3.2 kg (7.0 lbs).
- Shipping Weight (Pair): 7.9 kg (17.5 lbs).
Color Options
- Available in black (RAL 9004) or white (RAL 9003) with paintable finishes.
Certifications and Standards
- CE Compliance: Ensures safety and performance standards for the European market.
- Weatherproof Design: Built to endure IEC 60529 IP54 conditions.
Included Accessories
- Mounting Bracket: Pre-assembled for immediate use.
- 5-mm Allen Wrench: For easy installation and adjustments.
Architectural Specifications
The LB20-PC30-5 is a high-performance, two-way surface mount speaker with an internal passive crossover. Its robust design includes a 5.25" woofer and a 0.75" Ferro fluid-cooled driver integrated with a waveguide for consistent 90° x 90° coverage. Electrical connections are concealed within the mounting system for a clean, professional finish.
The speaker features a selectable transformer with 70V/100V taps and an 8 Ω bypass for distributed or low-impedance systems. Its fire-rated ABS enclosure and IP54 certification make it suitable for demanding indoor and outdoor applications.
The LB20-PC30-5 from Bosch provides unmatched durability, ease of installation, and excellent acoustic performance for versatile surface mount applications.

BOSCH
Bosch - LB20-PC30-5 Speaker 5" cabinet 70/100V pair
The LB20-PC30-5 is a premium 5.25" (133 mm) two-way surface mount speaker from Bosch. With outstanding sound quality, weather-resistant design, and flexible mounting options, it’s perfect for a wide range of indoor and outdoor applications. Ideal for background and foreground music, paging, and sound reinforcement, this speaker is engineered for venues like restaurants, retail spaces, theme parks, and hospitality environments.
Key Features
- Advanced Mounting System: Innovative ball-and-socket design allows 90° horizontal and 45° vertical rotation for versatile installation.
- Outdoor Durability (IP54 Rated): Designed to withstand harsh environments, including sun, salt, and moisture exposure.
- Powerful Low-Frequency Performance: Equipped with a long-throw 5.25" woofer for extended bass response down to 60 Hz.
- High SPL Output: Capable of delivering 109 dB continuous (115 dB peak) SPL.
- Flexible Connectivity: Includes a transformer with 70V/100V taps and an 8 Ω bypass for low-impedance systems.
Applications
The LB20-PC30-5 is suited for various settings, including:
- Commercial Spaces: Restaurants, retail stores, bars, and fitness clubs.
- Outdoor Environments: Patios, theme parks, and leisure areas.
- Hospitality: Hotels, resorts, and conference centers.
Technical Specifications
Acoustics
-
Frequency Response:
- (-3 dB): 85 Hz – 20 kHz
- (-10 dB): 60 Hz – 20 kHz
- Sensitivity: 90 dB (1 W, 100 Hz – 10 kHz, 1 m).
- Max SPL: 109 dB continuous, 115 dB peak.
- Coverage Angle: 90° horizontal, 90° vertical.
Transducers
- Low-Frequency Driver: 5.25" (133 mm) polypropylene woofer.
- High-Frequency Driver: 0.75" (20 mm) Ferro fluid-cooled driver coupled to a waveguide.
Transformer Taps
- 70V: 3.7 W, 7.5 W, 15 W, 30 W.
- 100V: 7.5 W, 15 W, 30 W.
- 8 Ω Bypass: Supported with safety screw protection.
Power Handling
- Continuous Pink Noise: 75 W (300 W peak).
- Recommended High-Pass Filter: 60 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 quick attach and detach operation.
Weather Resistance
- IP54 Certified: Tested for solar radiation, salt mist, and chlorine resistance.
- IEC Standards: Meets multiple environmental durability standards.
Dimensions and Weight
- Dimensions (H x W x D): 255 mm x 180 mm x 154 mm (10.0 in x 7.1 in x 6.0 in).
- Weight: 3.2 kg (7.0 lbs).
- Shipping Weight (Pair): 7.9 kg (17.5 lbs).
Color Options
- Available in black (RAL 9004) or white (RAL 9003) with paintable finishes.
Certifications and Standards
- CE Compliance: Ensures safety and performance standards for the European market.
- Weatherproof Design: Built to endure IEC 60529 IP54 conditions.
Included Accessories
- Mounting Bracket: Pre-assembled for immediate use.
- 5-mm Allen Wrench: For easy installation and adjustments.
Architectural Specifications
The LB20-PC30-5 is a high-performance, two-way surface mount speaker with an internal passive crossover. Its robust design includes a 5.25" woofer and a 0.75" Ferro fluid-cooled driver integrated with a waveguide for consistent 90° x 90° coverage. Electrical connections are concealed within the mounting system for a clean, professional finish.
The speaker features a selectable transformer with 70V/100V taps and an 8 Ω bypass for distributed or low-impedance systems. Its fire-rated ABS enclosure and IP54 certification make it suitable for demanding indoor and outdoor applications.
The LB20-PC30-5 from Bosch provides unmatched durability, ease of installation, and excellent acoustic performance for versatile surface mount applications.