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stute.x1A

Precise and easy audio measurements up to 90kHz for amplifier and loudspeaker driver!

Advantages

90k@192k sample rate
Wide measurement range: 20Hz..90kHz
Save money
Low cost due to Usage of a comercial USB audio interface & microphone
Accurate
Precise plus high repeat accuracy 
Easy
User friendly Design. No "Windowing" for acoustic measuremnts 
xy Multi-Channel
6-channel screen with text input and math. functions
TS Parameter
Determine driver VAS, QMS, Qms,...
Bluetooth & Co
Suitable for audio network player or bluetooth audio interfaces
FFT & Distortion
Measure k2 and 3 up to 30kHz!

Only 3 steps to the first measurement 

Step 1

Connect the USB audio interface 

Step 2

Install and calibrate stute.x1A 

Step 3

Start with the measurements

Screenshots

  • Panel "External"

    Measurements with external sourced test signals, like sine signals played via Bluetooth audio interface

  • Mode "External"

    Example tone control Audio Network Player, test signal sourced via NAS server

  • Panel "Acoustical" measurements

    For loudspeaker box and driver measurements

  • Panel "Electrical"

    For electrical frequency response measurements with internal signal source, like for amplifier or audio filter

  • Panel "FFT/THD"

    Distortion THD and harmonics measurement plus input signal spectrum analysis, e.g. to assess IMD distortion. Measurement electrical and acoustical

  • FFT Peak mode

    Red: Single measurement with White Noise, Blue: Peak values from all previous measurements

  • FFT Peak mode

    Frequency response via sweep signal and enabled peak mode

  • Panel "Thiele Small Parameter"

    Measurement of the important driver parameter Vas, Qts ... The values are the base for the enclosure calculation

  • Panel "Impedance Z"

    Driver impedance measurement to get right values for the audio filter calculation or check of the impedance EQ circuit (RC / RLC) from the audio crossover

Bluetooth & Co

Generally, stute.x1A generates the test signals internally. However, x1A also allows measurement with external signal sources. This is very useful for checking modern audio devices such as Bluetooth adapters or audio network players.

Application samples

  • Measurement frequency response acoustic

    Identify the best frequency range for a tweeter or mid-range driver and loudspeaker box issues

  • Audio filter check

    Verify the cutoff frequencies and slope or measure the driver impedance influence to the filter characteristic.

  • FFT acoustic

    Spectral analysis of the signal response from speaker driver or loudspeaker box

  • Speaker driver Thiele Small Parameter (TS)

    The driver TS parameter measurement like Vas or Qts. Export to stute.x1D Designer

  • Z measurement

    Driver impedance Z measurement to get the best input for the audio filter calculation. Also verification of the impedance EQ circuit (RC / RLC) or the bass reflex tuning.

  • FFT / THD amplifier

    Measure distortion THD + k2..k7 (also acoustical). Display the frequency spectrum of the input signal , e.g. to assess the IMD or DFD signal spectrum of an amplifier

  • Electrical frequency response with internal test signal source

    For example pre-amplifier tone control check

stute.x1S interface

 

Part of the KIT.

Tip: You find the schematic in download aera. 

EVERYTHING NEEDED FOR MEASUREMENT

stute.x1A Kit Pro 2

The kit makes the start very easy. All important components are included: Software stute.x1A, a calibrated measurement microphone with XLR cable (10m), an USB audio interface, the stute.x1S interface and the cable x1S <-> audio interface plus 2x 4mm banana plug to crocodile clip.

 

MEASURE WITH YOUR OWN HARDWARE

stute.x1A Kit Basic

The kit for all who has already an audio interface and microphone. The Kit includes the software stute.x1A, the interface stute.x1S and the cable to connect the x1S with your audio interface.

 

stute.x1A version comparison

  Software Basic Pro2 
Software x1A  x  x x 
Interface x1S    x x 
Cable x1S-audio interface     x x 
USB audio interface 192k     x
Microphone calibrated      x
10m mic. cable     x
crocodile-cables     x

System requirements

Computer MS-Windows 10 (32 & 64 bit), 11. Processor i3 1.5GHz or above, screen resolution min. 1024x768 pixel. An audio amplifier for acoustic measurements (20W or above). For acoustical measurements a measurement microphone. 

 


A commercially available USB Audio interface. Driver ASIO or Windows WDM.  Sample rate 44.1kHz, 48kHz, 96kHz, 176.4kHz, 192kHz. Recommendation: Behringer UMC 202HD or ONYX Producer 2x2. 


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