Professional Audio Signal Switching Module | System Compatibility, Integration and Protection | 100V | DC24V Power Supply

Technical Specifications

Input signal: 100V line or 4–16 Ω

Output signal: 4–16 Ω low-impedance

Purpose: convert audio signal to a constant-impedance load output

Power supply: DC24V

Housing dimensions: 143 × 120 × 60 mm

Mounting type: wall / cabinet mounting

Construction: durable, long-lasting technical enclosure

Functions

100V → 4–16 Ω conversion – allows the use of low-impedance speakers in 100V broadcasting systems

Universal signal switching – works as an audio interface between different systems and zones

Constant impedance load generation – protects amplifiers from overloads and incorrect wiring

DC24V power – compatible with professional PA and evacuation sound systems

Compact design – easy installation on walls or in technical cabinets

Usage

For home users: Enables safe connection of home loudspeakers to a 100V system; useful for modernizing old audio lines

For engineers / system integrators: Ideal when low-impedance speakers must be integrated into existing 100V zones; clear terminals, easy installation, reliable for mixed systems

For electricians / installers: Essential when connecting PA, IP, evacuation, and commercial audio systems; ensures system stability and protects against impedance mismatches; widely used in shopping centers, schools, offices, factories, and conference halls

Pros

Ensures compatibility between 100V and low-impedance systems

Protects equipment from overloads and incorrect connections

Compact and easy to install

Compatible with equipment from various manufacturers

Important component in professional PA/IP system configuration

Cons

Does not provide audio amplification – only signal matching

Requires a separate DC24V power supply