NTi Audio Offers Rapid Frequency Response Measurements with the XL2

November 4 2019, 00:20
Do you want to measure the frequency response of a speaker or audio component, and not have to wait until the lower frequencies stabilize? NTi Audio offers an innovative and practical solution with its Minirator MR-PRO and XL2 range of measurement instruments. The measurement uses two new MR-PRO test signals and a new, matching measurement function in the XL2, in which the signals contain a 1-second and a 4-second cyclic pink noise, from which the XL2 can quickly calculate a stable measurement result in real time.

The trick lies in the design of the test signals; the pink noise has been shaped so that the frequency response is flat within 1 and 4 seconds respectively. This feature allows the XL2 Analyzer to determine an accurate frequency response of the device under test within seconds and with 1/12th octave resolution.

Typically this new function comes in handy when a rapid test of a speaker, amplifier or mixer channel is required. That is, whenever a measurement of the frequency response of a device or an electroacoustic transducer is of interest.

The only prerequisites for accessing this extremely useful application are the download of NTi Audio's "Fastpnk1" or "Fastpnk4" test signals, and the installation of the new "EQ1" or "EQ4" measurement functions on an XL2 Audio Analyzer. The functions are available with the XL2 Spectral Limits Option from XL2 firmware V4.30 or higher.

While the XL2 Analyzer is one of the most versatile and complete portable audio test instruments available in the industry, there are many applications where only a certain number of functions are used repeatedly and that's where the Minirator MR-PRO from NTi Audio is an excellent alternative, at an attractive price point.

The MR-PRO provides a full set of analog audio signals including sine wave, pink noise, white noise, delay test signal, polarity test signal, stepped sweep and continuous sine sweep. Further, a set of wav-files, useful for system optimization, is stored in the internal flash memory and users can store their personal favorites to this set. Besides the broad range of generated audio signals, the Minirator MR-PRO monitors the signal balance, phantom power and impedance of the connected load, and an integrated XLR cable tester simplifies trouble-shooting tasks.
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