RTA-M Omnidirectional Condenser Measurement Microphone

The dbx RTA-M is the measurement microphone that makes automatic room tuning work. Built for the DriveRack series, it feeds the System Setup Wizard and Auto EQ Wizard an accurate picture of what your loudspeakers are doing in the actual room, not what they measure on paper.

The back electret condenser element has an omnidirectional polar pattern and flat frequency response from 20 Hz to 20 kHz, so it hears the full spectrum from every direction without adding a shape of its own. That neutrality is the whole point: any coloration in the mic becomes a correction the DriveRack applies to your PA, so the measurement tool has to stay out of the way. Sensitivity is -63 dB ±3 dB with 250 ohm impedance at 1 kHz.

Power comes from the DriveRack itself over phantom power, and the mic accepts anything from 9V to 52VDC, so there are no batteries to track and no separate supply to pack. Plug it in, run the wizard, and the processor handles the analysis and correction.

It earns its place in the rack case on rooms that fight you: gymnasiums, banquet halls, houses of worship with hard surfaces, and rooms that sound different full than empty. Set it at the mix position, run pink noise analysis, and the DriveRack corrects what it hears. Re-measure after a room change or a new speaker deployment and the system stays accurate.

The RTA-M works with the DriveRack PA, PA+, PA2, VENU360, and 260, and ships with a microphone clip and a case.