Bosch LBC1411/10 speaker

Bosch LBC1411/10 Rotary Volume Control (36 W)

The Bosch LBC1411/10 is a high-performance, wall-mounted rotary volume control designed specifically for public‑address and background music systems. It offers seamless local volume adjustment while ensuring that emergency announcements are broadcast at pre‑set levels—thanks to its built-in 24 V DC override relay.

Key Features:

• Rated Power: 36 W for medium-duty audio applications

• Versatile Compatibility: Supports both 3‑wire and 4‑wire systems

• Emergency Override: Power-save (/10) model features a relay that overrides local volume during emergency messages

• Rotary Attenuation: Smooth volume adjustment with eight 3 dB steps plus “off”

• Reliable Construction: Screw‑terminal connectors, sleek white (RAL 9010) housing, in a compact 81 × 81 × 45.5 mm form factor

• Audio Performance: Frequency response from 50 Hz to 20 kHz (–1 dB), total harmonic distortion (THD) below 0.5%

• Low Power Draw: Only 20 mA at 24 V DC

• Elegant Design: Unobtrusive style blends into any modern interior

Specifications:

• Input Voltage: 100 V line

• Impedance Switch‑down: Eight attenuation steps (–3 dB each) plus off position

• Dimensions: 81 × 81 × 45.5 mm

• Weight: Approximately 217–227 g

• Color: White (RAL 9010)

Ideal Use Cases
Perfect for commercial spaces, offices, retail environments, or any scenario requiring controlled background music and reliable emergency communication. Its compact design and safety compliance make it a smart, dependable choice for integrated audio systems.