Speaker Test Software (optional)

The FX100 together with the Speaker Test Software forms a comprehensive test solution with a unique and reliable defects analysis. An objective Rub & Buzz analysis correlates 100% to the subjective perception of the human ear. The typical cycle time for a complete speaker test is less than two seconds.

RT-Speaker Software Passed/Failed Testing


Measurement Parameters:

  • Frequency Response
  • Distortion THD, THD+N, k2-k35
  • Impedance Response
  • Resonance Frequencies f0
  • Sound Pressure Level dBSPL
  • Speaker Polarity
  • Rub & Buzz defects analysis with a 100% correlation to the human ear
  • Thiele/Small Parameters
  • DC Resistance 

Read more

Microphone Test Software (optional)

The turnkey microphone test solution provides an extensive test with short test cycle times. The solution is provided by the FX100 and operated via the RT-Microphone PC software. It provides a comprehensive set of measurements for the quality control of microphone components or assembled products, such as mobile phone microphones, headsets or Pro Audio microphones.

FX100 Microphone Test Software Passed/Failed Testing


  • Accurate and repeatable measurements
  • Turnkey solution with flexible user interface in selectable languages English, Chinese, Japanese, Korean and German
  • Short test cycle time, typically < 2 seconds
  • Dedicated for R&D and automated production lines
  • Scalable test architecture with dual channel measurements and optional switchers for sequential testing of one or more microphones
  • Built in phantom power supply

Read more

Channel Extension 2 CH -> 4 CH

Channel Extension 2 CH -> 4 CH
Extends the FX100 base unit from 2 channels to 4 individual input/output channels.

NTi Audio #: 600 060 010

Digital Audio FX-AES

FX-AES Digital Audio
The Digital Audio FX-AES module extends the FX100 Audio Analyzer with a digital audio generator and analyzer. The sync-input allows the generator clock to be synchronized to an external clock reference.

Interfaces are
  • Balanced XLR (AES-EBU)
  • Unbalanced BNC (S/PDIF)
  • Optical TosLink
  • Sync Input (BNC)
NTi Audio #: 600 060 024

Product Data

Speaker Impedance Power FX-SIP

FX-SIP Speaker Impedance Power
The integrated power amplifier and current sensor offer complete testing of one or two connected loudspeakers or resistive loads (2*10 W or 1*30 W).

NTi Audio #: 600 060 022

Speaker Impedance FX-SIH

FX-SIH Speaker Impedance

Offers impedance response and current measurements of a connected speaker or resistive load (25 mA to 10 A).

NTi Audio #: 600 060 021

Filter for Class-D Amplifier Testing FX-DF

FX-AES Digital Audio
The FX-DF module comprises two analog filters that are linked to the output signals of the amplifier under test. A load (substituting the impedance provided by the speakers in normal operation) is connected to the test system through banana plugs. The filtered signals are automatically routed internally to the two analysis channels.

Interfaces are
  • 2-pin SPEAKON inputs
  • Banana plugs to external load
NTi Audio #: 600 060 026

Input Switcher FX-IS

FX-IS Input Switcher
Offers 4 additional switched input channels. Multiple FX-IS modules can be installed, thus up to 14 switched inputs may be established.

NTi Audio #: 600 060 013

Output Switcher FX-OS

FX-OS Output Switcher
Offers 4 additional switched output channels. Multiple FX-OS modules can be installed, thus up to 14 switched outputs may be established.

NTi Audio #: 600 060 016

Bluetooth Box

Bluetooth Box
The Bluetooth Box allows to connect an FX100 Audio Analyzer to a Bluetooth device – e.g. headset, earbud, loudspeaker – to measure its audio quality (supported profiles: A2DP, HSP & HFP). The Box thereby acts as signal converter between the Bluetooth device and the FX100.

NTi Audio #: 600 061 021

Product Data

MEMS Mic Interface Box


The MEMS Mic Interface Box converts the digital output signals of up to eight MEMS microphones into individual analog audio channels.

The microphone output signals, which must be encoded in ½ cycle PDM format, are simultaneously D/A converted and then measured by the FX100 Analyzer. The operator may select the clock frequency or activate the calibration mode to allow adjusting the input level of the analyzer.

NTi Audio # 600 090 000

Product Data

Measurement Microphone M2010 / M2015

Measurement Microphone M2010 / M2015
The M2010 and M2015 are compact, high-performance measurement microphones with a class1 frequency response, dedicated to research, design lab, end-of-line testing and service. They are particularly suited for applications with restricted available space.

M2010 (24 - 145 dBSPL)
NTi Audio #: 600 040 010

M2015 (34 - 155 dBSPL)
NTi Audio #: 600 040 015

Read more

Class 1 Sound Calibrator

Precision Calibrator 94/114 dB
The battery-operated Class 1 Sound Calibrator is classified for the calibration of class 1 measurement microphones, sound level meters and other acoustic measurement equipment. This precision microphone calibrator delivers 94 or 114 dB at a frequency of 1 kHz.

NTi Audio #: 600 000 388

Product Data

Add the "1/4" Calibration Adapter" to fit 1/4” measurement microphones into the Class 1 Sound Calibrator. NTi Audio #: 600 000 391


Vibration Sensor

A range of uniaxial piezoelectric accelerometers is offered for analyzing the vibrations of devices under test. These may range from slight excursions up to strong impacts. The accelerometers can be mounted either with a screw or a magnet depending on the type selected.

NTi Audio #:

  • Accelerometer A4580: 600 010 349
  • Accelerometer KS901MF: 600 010 347
  • Accelerometer A97100: 600 010 352

Product Data

Input Switcher IS-1002

Input Switcher IS-1002
IS-1002 is an advanced, multi-functional audio input switcher with 10 input channels and 2 output channels, featuring individual power supplies for microphones on each input channel. Up to 8 input switchers can be cascaded for multi-channel applications totaling 80 input channels.

NTi Audio #: 600 010 425

Product Data

Turntable TT01

Turntable TT01
The Turntable TT01 allows you to execute directivity measurements (polar plots) of microphones, as well as lightweight loudspeakers or other devices. The USB controlled TT01 is supported by NTi Audio software packages, and can also be programmed to your individual needs, e.g. using a .NET API or MATLAB library.

NTi Audio #: 600 061 020

Product Data

100 V RT-IB Impedance Box

RT-IB Impedance Box
The 100V Impedance Box is tailored for the impedance response and resonance frequency testing of 70/100V speakers.

NTi Audio #: 600 010 395

Product Data

FX100 Rack Mounting

FX100 Rack Mounting
Mount one single instrument or two FX100 Audio Analyzers besides each other into a rack.

Rack Mounting for 1x FX100
NTi Audio # 600 061 005

Rack Mounting for 2x FX100
NTi Audio # 600 061 006

Environment Sensor

Measures temperature, humidity and barometric pressure of the test environment. The test data are automatically integrated into turnkey test solutions for close monitoring of the manufacturing process stability.

NTi Audio #: 600 010 348

Product Data

Flexus Digital I/O Adapter Box

The Flexus Digital I/O Adapter Box allows to connect the FX100 Audio Analyzer to peripheral devices such as a PLC, foot switch or stack light.

NTi Audio # 600 061 017

Product Data

Foot Switch

The Flexus Foot Switch triggers the test execution via the Flexus I/O Adapter box.

NTi Audio # 600 061 018

Product Data

Stack Light

The FX100 Audio Analyzer controls the external Stack Light via the built-in auxiliary I/O interface and the Flexus I/O Adapter Box. The stack light has three lamp sections, colored green, orange and red.

NTi Audio # 600 061 019

Product Data

Get more Information

Contact us for a quotation or to discuss your measurement application.

Request Quotation    Call now: +1 (503) 684-7050   Web Shop