Live Event - Sound Level Monitoring

Live Events Monitoring Solution

The XL2 Sound Level Meter helps you comply with sound limit regulations. Simply power up the meter, select the pre-configured measurement profile and press start.

The XL2 measures and logs all levels without further user action, and gives you a red light when you are above the limit. A compressed audio wav-file may be recorded simultaneously.

At a Glance

  • Comply with Sound Limits
  • Green - amber - red indication
  • Audio file recording

Measurement Applications

XL2 with M4260 Measurement Microphone

XL2 Limit Light

Including Correction Factors

The XL2 measures the correction values between the loudest point of the live event and the actual measurement position, e.g. the front-of-house. These correction values are included with the actual measurement data, thus you have the level at the loudest point in the public area under control.

Predict into the Future

Run the Sound Level Predictor PC Software Application to monitor how much time you have BEFORE the light goes red.

Automated Report

Load the logged data into a report template and play the XL2 audio file to review any periods when the sound was over the limit, but beyond your control, such as when the audience applause was too loud.

Gives You the Green Light

The tricolor Limit LED or the optional external Limit Light gives you the green light when you are within the prescribed limit. It turns yellow or red when reaching or exceeding the pre-set limits.

Large View of Sound Levels

The Projector PRO software displays the XL2 screen in real-time via USB on the connected Windows or Mac computer. The software toolbar enables control of the XL2 with the mouse and keyboard. The background color turns from green to red according to the user-defined limits.

The “XL View” and the “Sound Level Predictor” display extend the XL2 Projector PRO for live sound monitoring applications.

  • The “XL View” window presents sound levels in large size on the connected computer screen. Users may select to view one, two or three sound pressure levels. Exceeding levels are presented with a pre-warning amber or alarming red color.

  • The “Sound Level Predictor” visualizes the level history of the current measurement interval and indicates the headroom for the actual measurement period or the next few minutes. Green bars confirm that the present level is well below limits. Red bars are a call to action to reduce the sound level at the mixing desk. This allows the FOH engineer to optimize dynamic passages of the band for maximum audience satisfaction while still remaining within the legal limits.

Additionally the Projector PRO software offers the ability to retrieve measurement data from the XL2 without interruption to the measurement process. The entire file system of the XL2 is available while the XL2 is measuring.

The “XL View” and the “Sound Level Predictor” require that the Remote Measurement Option be installed on the XL2.

System Requirements:

  • Windows 7, 8, 10 or higher
  • Mac OS 10.8 or higher

Download Projector PRO Software


Exel Set for Live Sound Monitoring

Exel Kit for Live Sound Monitoring

  • XL2 Sound Level Meter
  • M4261 Measurement Microphone
  • ASD Cable
  • Mains Power Adapter
  • Exel System Case

Optional as required:

Limit Light

visual level indication with a green, orange or red light

Precision Calibrator

for user calibration

Remote Measurement Option for XL2

for querying measurement data

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