Impedance Meter

Check loudspeaker lines and detect wiring or load faults.

Distributed Speaker System Testing

The Minirator MR-PRO measures the impedance and power rating of distributed speaker systems. Deviations from the expected result identify problems such as bad connections, incorrect tap connections or short circuits. Use the optional 70 V / 100 V Protection Adapter for safe operation.

Power & Impedance Measurement
70/100 V Installations
Commissioning and maintenance

Impedance Testing with the Minirator MR-PRO

The impedance test supports the verification of distributed loudspeaker installations and shows detailed information of the connected load. The test result shows if the connected speaker system is in good order as well as the required amplifier power ratio. The power is automatically calculated by the measured impedance for 25 V, 35 V, 50 V, 70.7 V, 100 V, 140 V, 200 V systems.

Discover MR-PRO

Detecting Installation Problems

The Minirator MR-PRO helps to detect problems, such as

Speakers not connected
Speakers wrongly connected
Connection to wrong transformer taping, e.g. 1 W instead of 2 W
Short circuits
Other external products, such as fire alarm devices connected
Bad connection cable

Advantage of MR-PRO Measurement Technology

Vibration and environment noise within the area of the speaker commonly effects the speaker impedance measurement results of other test instruments. The MR-PRO impedance measurement includes technology for achieving stable readings within noisy environments.