Bosch LB20-PC15-4L

The Bosch LB20-PC15-4L compact cabinet loudspeakers feature a 4? driver with 15W output at 100V line / 70V line. Weather resistant, rated IP54.


In Stock
SKU: LB20-PC15-4L Category: Tag:


The Bosch LB20-PC15-4L (White) and LB20-PC15-4D (Black) compact cabinet loudspeaker feature a 4” driver with 15 watt power output at 100 volt line / 70 volt line. Weather resistant speaker, rated IP54. Resistant against sun, salt and moisture. Zinc plated powder coated grille. Supplied with innovative ball/socket bracket adjustable 90° horizontally and 45° vertically.
(Supplied as pairs).

The innovative mounting bracket enables all wiring to completed and terminated at first fix. The loudspeaker is then simply clicked into place with no further cables or connections required or visible.

Furthermore, the Bosch LB20-PC15-4D (Black) and LB20-PC15-4L (White) speaker can be mounted horizontally or vertically thanks to the rotatable badge making it ideal as a surface mount speaker.

The fire rated ABS plastic enclosure houses a long throw 4″ (102 mm) woofer for extended LF performance down to 75 Hz and 0.75″ HF transducer.

The Bosch LB20 series is a new range of commercial loudspeakers, weather resistant speaker IP54 or IP65, and can be  used indoors or outdoors. Superior quality ensures higher SPLs and maximum intelligibility. They are available in a range of sizes and different power offerings all acoustically and aesthetically matched.


  • Innovative mount system is included for quick,simple, and reliable installations
  • Carefully engineered for outdoor environments (IP54), without compromising performance
  • Long throw 4″ (102 mm) woofer housed in a fire rated ABS plastic enclosure for extended LF performance down to 75 Hz.


Frequency Response (-3 dB) 100 Hz – 20 kHz
Frequency Response (-10 dB) 75 Hz – 20 kHz
Sensitivity 86.5 dB
Max SPL (Calculated) 98.5 dB (104.5 dB Peak)
Coverage Angle Horizontal 110°, Vertical 110°
Power Handling 15 W (60 W Peak) Continuous Pink Noise (100 hours)
Low Z No
Nominal Impedance 8 Ω
Recommended High-Pass 70 Hz (24 dB/octave)
Input Transformer (70V/100V) 15W
Transformer taps 70 V: 3.7W, 7.5W, 15W
100 V: 7.5 W, 15 W
LF Transducer 4″ (102 mm)
HF Transducer 0.75″ (20 mm)
Connectors Captive screws on wall bracket. Max. wire size 12AWG (2.5 mm)
Environmental IP54 (per IEC-60529)
Color Black
Dimensions (H x W x D) 7.6″ (193 mm) x 5.5″ (140 mm) x 4.7″ (120 mm)
Net Weight 4 lbs (1.8 kg)
Shipping Weight 11.9 lbs (5.4 kg)