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NTI Audio XL2 Audio and Acoustic Analyzer

NTI Audio XL2 Audio and Acoustic Analyzer


The NTi Audio hand-held XL2 Analyzer is a powerful Sound Level Meter, a professional Acoustic Analyzer, a precision Audio Analyzer and a comprehensive Vibration Meter in one instrument. Easy operation and countless applications distinguish this quality Swiss product.


  • Life Safety Systems
  • Noise Measurement
  • Live Sound
  • Industrial and Aerospace
  • Room & Building Acoustics
  • Quality Control
  • Electroacoustic Installations


Made by Professionals for Professionals
Focus on your core skills and let the XL2 provide you with the reliable measurement data. This instrument is the benchmark that allows you to be the professional that you are. The robust design and verifiable measurement methods pair to help you perform better. The XL2 is the reference instrument in audio and acoustic measurement.

Switch on - Good to go
Get the job done, on time! The instrument is ready to measure literally seconds after you press the power button. The intuitive navigation and flexible user interface assist in simplifying every task. The XL2 provides an extensive range of measurement functions.

Ready for any Challenge
The XL2 is developed according to user needs, and provides reliable measurement solutions for sound system installations, noise control, architectural acoustics, evacuation systems, live events, quality inspection and occupational health and safety. Discover an instrument you can trust for specialist applications.

Incomparable Value
The XL2 Audio and Acoustic Analyzer provides top-class performance with excellent value for money. You will receive an instrument exactly tailored to your needs for less than you expect.

Data Analysis and Reporting
The XL2 stores all data onto the SD card for direct transfer to the computer. Data reports and log files are stored in plain text format, which can be opened with any text editor (Notepad, Wordpad, etc). The data is tab-delimited, so dropping the .txt file into a spreadsheet application will conveniently show the results in columns. The sound level meter may additionaly record the audio data as a WAV-file.


  • Flexible user interface
  • Wav-file recording
  • Voice notes
  • Visual limit indication of exceeding sound levels
  • Mini-SD card, 2 GB removable
  • Built-in real time clock
  • Built-in speaker
  • Rechargeable Li-Po battery included
  • Serial programmable I/O Interface
  • TOSLink output (optional)
  • Automated sensor detection reads electronic data sheet of measurement microphones M4260 and M2210



  • Sound Level Meter
  • Product Configurations in accordance with IEC 61672 / ANSI S1.4
  • XL2 with M2230 microphone >> Class 1 certified with Shroud
  • XL2 with M2211 or M2215 microphone >> Frequency response Class 1
  • XL2 with M4261 microphone >> Class 2

    Complying Standards
  • IEC 61672, IEC 60651, IEC 61260, IEC 60804, ANSI S1.4, ANSI S1.43, DIN 45657

    Sound Level Measurements
  • SPL actual, Lmin, Lmax, Lpeak, Leq, gliding Leq
  • Optional: Percentile statistics, sound exposure level
  • All measurement results simultaneously available
  • Correction value measurement wizard
  • Logging all data or subsets in selectable intervals
  • Recording of wav-files and voice notes
  • Limit monitoring showing exceeding sound levels
  • Digital I/O interface for external peripherals control

  • Frequency Weighting: A, C, Z (simultaneous)
  • Time Weighting: Fast, Slow, Peak, optional: Impulse

  • Measurement Bandwidth (-3dB): 4.4Hz - 23.0kHz
  • Level Resolution: 0.1dB
  • Internal Noise: 1.3µV A-Weighted

    Real-Time Analyzer RTA
  • Wide band
  • 1/1 octave band: 8Hz - 16kHz
  • 1/3 octave band: 6.3Hz - 20kHz

    Acoustic Analyzer
    FFT Analysis:
  • Real-time FFT with actual level, Leq, Lmin, Lmax
  • Level Resolution: 0.1dB
  • Optional: Passed/failed measurements
    Reverb Time RT60:
  • 1/1 octave bands results from 63 Hz - 8 kHz (T20,T30)
  • Optional: 1/3 octave bands results from 50 Hz - 10 kHz
  • Checks polarity of speakers and line signals

    Audio Analyzer
    Level RMS:
  • True RMS detection in V, dBu, dBV and dBSPL
  • Range XLR/RCA input: 2µV - 25V (-112dBu - 30dBu)
  • Accuracy: ±0.5% @ 1kHz,
  • Flatness: ±0.1dB @ 12Hz - 21.3kHz
  • Bandwidth (-3dB): 5Hz - 23.6kHz
  • Range: 9Hz - 21.3kHz
  • Accuracy: < ±0.003%
  • Range: -100dB - 0dB (0.001% - 100%)
  • Residual THD+N @ XLR/RCA input: < 2 µV
  • Scope Auto ranging, auto scaling
  • Frequency Weighting: A, C, Z
  • Highpass 100Hz, 400Hz, 19kHz,
  • Bandpass 22.4Hz - 22.4kHz

    Input/Output Interfaces
    Audio Inputs:
  • XLR balanced with input impedance = 200 kOhm, phantom power: +48 V switchable
  • RCA unbalanced with input impedance > 30 kOhm
  • Built-in condenser microphone for polarity testing, delay measurements and voice note recording
    Audio Outputs:
  • Built-in speaker
  • Headphone connector 3.5mm Minijack Stereo
    USB Interface:
  • USB mini connector for data transfer to PC, Remote
  • Measurement, XL2 Projector and charging of battery
    Digital I/O:
  • Connection interface to accessories
  • XL2 Input Keypad
  • Limit Light, Stack Light
  • Digital I/O Adapter PCB
  • SD Card included (8 GByte), removable, storing measurement data in ASCII format
    Power Supply:
  • Rechargeable Li-Po battery included
  • Dry cell batteries type AA, 4 x 1.5 V
  • Linear external power supply 9 VDC
  • USB-Power Supply

  • Clock: Real-time clock with lithium backup battery
  • Temperature: 14°F - 122°F (-10°C - 50°C)
  • Humidity: 5% - 90% RH, non-condensing
    Excluding Sales Tax
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