Audio amplifier Omnitronic 80709731 Performance/stage Black

The Omnitronic MPZ-250.6 ELA mixer amplifier in 19" format is designed for ELA (electrically distributed) sound reinforcement systems and is suitable for both mobile and permanent installations. It provides dedicated outputs for 70 V and 100 V transformer-coupled ELA loudspeakers as well as for 4–16 Ω speakers, and includes a line output to feed an external device such as a mixing console. With six mixable inputs (up to three microphone inputs and three line-level inputs) it supports a variety of source configurations while maintaining a compact rack-mount form factor.

Advantages

The unit offers flexible zone control with six separately switchable zone outputs on the front panel, making it easier to implement multi-zone paging and background-music setups. A front-panel microphone input includes an adjustable priority function and built-in gong for announcements, with automatic and continuously adjustable attenuation of other signals. Built-in protection features include a cooling fan, switch-on delay, overvoltage and short-circuit protection that electrically isolate the loudspeaker outputs to protect both the amplifier and connected speakers.

Suitable for

Key specifications

How to use

Install the amplifier in a standard 19" rack and connect speaker lines according to the required voltage (70 V, 100 V) or to low-impedance speakers (4–16 Ω) using the appropriate terminals. Connect source devices to the line inputs and microphones to the mic inputs; adjust input mixes and zone switches on the front panel. Use the mic priority control to make announcements; enabling the gong will provide an attention signal before the announcement. Monitor the amplifier during initial use to ensure proper zone routing and levels.

Recommendations

For reliable long-term operation, ensure adequate rack ventilation and avoid obstructing the unit's fan. Use correct speaker wiring and impedance matching for 70 V/100 V lines, and observe the amplifier's power limits to prevent thermal shutdown or speaker overload.