Public Address Transformer Omnitronic ELA-100V-2 100 V 2-channel

Omnitronic ELA-100V-2 is a two-channel 100 V line transformer designed for public address and commercial audio systems. The unit provides galvanic isolation and impedance matching between amplifier outputs and distributed ceiling or wall speakers, enabling reliable signal distribution across larger venues while reducing signal loss and ensuring even sound levels over long cable runs.

Advantages

The two-channel design allows independent connection of separate speaker lines or stereo zones while keeping each channel isolated. Built for 100 V distributed speaker systems, the transformer helps maintain consistent audio levels and simplifies the connection of multiple speakers without complex wiring changes. Its compact form factor facilitates installation in equipment racks, speaker enclosures, or junction boxes.

Suitable for

• Background music and paging systems in shops, restaurants, and offices
• Public address installations in schools, hospitals, and public buildings
• Multi-room or multi-zone commercial audio systems
• Connecting groups of ceiling or wall-mounted speakers over long cable runs

Key specifications

• Configuration: two isolated transformer channels for 100 V line systems
• Function: impedance matching and galvanic isolation between amplifier/speaker lines
• Application: designed for distributed public address and commercial audio installations
• Compatibility: works with standard 100 V constant-voltage speaker networks
• Physical: compact unit suitable for rack or enclosure mounting

How to use

Install the transformer close to the amplifier or at a central distribution point in the speaker network. Connect the amplifier outputs to the transformer's input terminals and run the 100 V speaker lines from the transformer's output terminals to the speaker groups. Observe correct wiring polarity and secure all connections. Use separate channels for different zones or independent speaker groups. Verify output taps and power handling of connected speakers to match the transformer's and amplifier's ratings.

Usage recommendations

For reliable long-term operation, ensure proper ventilation and avoid mounting the unit near strong heat sources. Match speaker tap settings to the required power per speaker and confirm total load does not exceed amplifier capacity. When installing in public or commercial spaces, follow local electrical and fire safety regulations and, if needed, consult a qualified audio installer.