NTi XL2 + M4260 Acoustic Analyser & Sound Level Meter

£60.00 plus VAT per day

The hand-held NTi XL2 + M4260 Acoustic Analyser is a powerful Sound Level Meter, a professional Acoustic Analyser and a precision Audio Analyser in one instrument. Easy operation and countless applications distinguish this quality Swiss product. The NTi XL2 + M4260 is the ideal tool for taking readings of sound levels at outdoor events.


XL2 Sound Level MeterReal Time Analyser RTA
The RTA perfectly suits tasks such as optimisation of sound systems and rooms. The XL2 measures and logs wideband values and the real time spectrum in 1/1 or 1/3 octave band resolution in accordance with IEC 61260 class 0. The sound level meter results of the wide band and RTA spectrum are simultaneously available.
XL2 FFT AnalyzerAcoustic Analyzer
FFT Analysis
The real-time FFT is the ideal tool for visualisation of comb filters and narrow band effects. It measures the actual level and the averaged level Leq in three ranges over the entire audio band. The optional Extended Acoustic Pack offers an additional high-resolution Zoom-FFT up to 0.4 Hz steps in the frequency range 5 Hz – 20 kHz. The Spectral Limits Option extends the FFT Analysis with trace capturing, relative curve display and comprehensive tolerance handling.
  XL2 RT60 Reverberation TimeRT60 Reverberation Time
The XL2 measures the energy decay in the range from 63 Hz to 8 kHz by the Schroeder method in 1/1 octave bands. Automatic triggering and averaging of multiple measurements simplifies the operation and minimises the measurement time. Use either an impulse source or an interrupted pink noise as the test signal. The optional Extended Acoustic Pack extends the RT60 measurement to a 1/3 octave resolution.
XL2 PolarityPolarity
For a stereo sound image, it is important to match the polarities of the left and right speakers. The XL2 measures the polarity of cables, single speakers and speaker cabinets. The detailed result page displays the measured polarity as octave bands from 125 Hz to 8 kHz. This allows in-depth verification of the polarity – frequency relation. The polarity test signal is provided by the NTi Audio Test CD or the Minirator test signal generator.
XL2 Delay TimeDelay Time
The delay function supports the accurate setup of delay lines and thus the optimisation of the directionality of the signal source. The XL2 measures the delay time between the electrical reference signal and the acoustic signal from the speaker. The required delay settings are displayed automatically, allowing the audio engineer to set the measured delay time directly into the delay device in the rack.
XL2 Audio AnalyzerAnalog Audio Analyser: Level RMS / THD+N
The XL2 with balanced XLR and unbalanced RCA inputs offers a comprehensive, high performance audio analyser. It simultaneously measures balance, level, distortion (THD+N) and frequency. The internal loudspeaker or headphone output offers audible monitoring of either the input signal or just the residual distortion. The optimised low distortion and low noise design enable level measurements down to -112 dBu and residual distortions typically lower than -100 dB, which is unmatched in handheld instruments.
XL2 Spectral Audio MeasurementsAudio Spectrum
Spectral audio measurements are offered in the units Volt, dBu and dBV within the following measurement functions:
Sound Level Meter
1/12 Octave (optional)
XL2 ScopeScope
The scope function visualises the waveform of the electrical input signal. It triggers to the fundamental frequency and selects the scaling of the X-axis (time) and Y-axis (level) automatically. The fundamental or most dominant frequency is displayed above the scope screen.