x1Analyzer Audio measurement


Audio measurements
and simple up to 90kHz

Driver & Loudspeaker box

Finde die besten Chassis für Dein Projekt.
Identify and correct weak points in the speaker cabinet

Car Hifi

Carry out acoustic measurements in the car and optimize your system.


Check: transmission behavior, tone control - loudness - EQ, distortion measurement


Does the crossover match the drivers?

MP3, Network Player, Bluetooth

How good is the reproduction: transmission behavior and distortion?


Determine the filter component values for R-L-C



  1. Supported sample rate of up to 192kHz
  2. Frequency response correction of the sound card
  3. Measurement with commercially available sound cards
  4. 2x6 channel measurement memory
  5. Continuous measurement
  6. Microphone correction
  7. xy window shows up to 6 measurement curves simultaneously
  8. Normalize and shift measurement curves
  9. Smooth measurement curves
  10. Data transfer to x1Designer
  11. Mathematical operations on the measurement curves
  12. Cursor measurement delta x & y
  13. 6 memory locations for preferred measuring ranges (fmin/fmax)
  14. Text input for measurement and measurement channel
  15. Copy measurement to the clipboard
  16. Print output

System requirements

PC Laptop

  1. MS-Windows 10 or 11, 32 / 64 bit
  2. USB Interface 2.0 or higher

Audio interface

  1. Support audio interface with ASIO and WDM driver model
  2. Sample rate 44,1kHz to 192kHz
  3. Adjustable headphone output
  4. 2 adjustable inputs
  5. Microphone amplifier with 48V phantom power
  6. Recommendation: Behringer U-Phoria UMC202HD

Interface x1S

  1. Simple measuring interface to build yourself

Acoustic measurements

  1. Audio amplifier (20W or more)
  2. Measurement microphone, such as the Behringer ECM8000

Measurement types

Acoustic frequency response

  1. Signal source: Audio interface
  2. Frequency range: 20 Hz to 20000 Hz
  3. SPL correct measurement, microphone correction
  4. Automatic level adjustment
  5. Export to x1Designer

Electrical frequency response (internal)

  1. Signal source: Audio interface
  2. Frequency range: 20 Hz to 90000 Hz 1)
  3. Differential signal measurement ("Stereo mode" deactivated)
  4. 10 to 100 measuring points per frequency decade (x10, e.g. 200 Hz to 2000 Hz)
  5. Units: dB, dBV, mVtrms, μW(Z), dBm(Z), %

Electrical frequency response (external)

  1. Signal source: "CD, MP3, WAV..."
  2. Measuring: Bluetooth, MP3 or Audio Network Player
  3. Frequency range: 20 Hz to 90000 Hz 1)
  4. Automatic detection of test signals (frequency, start)
  5. Automatic measurement stop by entering the "fmax" frequency
  6. Test signal playback in any order

Impedance Z

  1. Signal source: Audio interface
  2. Frequency range: 20 Hz to 90000 Hz 1)
  3. Internal signal source
  4. Z Measuring range: 1 to 250 Ohm
  5. 30 to 70 measuring points per frequency decade (x10))

FFT Spectrum

  1. Signal source: Audio interface or external
  2. Frequency range: 15 Hz to 90000 Hz 1)
  3. FFT points 1024 to 65536, windows: Hanning, Hamming, Rectangle
  4. Internal or external test signals
  5. Internal signal source: -50dB..0dB, 20Hz..90kHz 1)
  6. Average value from 1 to 10 measurements
  7. PEAK Hold measurement
  8. Frequency response with sweep or white noise

Klirrfaktor (THD)

  1. Signal source: Audio interface or external
  2. Frequency range 20 Hz to 90000 Hz 1)
  3. Measurement of THD and the coefficients k2 to k7 in % plus frequency of the measurement signal
  4. Internal test signal source: sine wave 20Hz to 90kHz 1) , level -50dB..0dB

Thiele Small Parameter

  1. Calculation: Vas, Qts, Qes, Qms, fs, Nref, BL, Cms, Mms, SPL
  2. Export to x1Designer for housing calculation and simulation

Component R-L-C

  1. R: up to 100 Ohm 2)
  2. L: up to 20 mH 2)
  3. C: up to 100 μF 2)

1) mit 192kHz Samplerate. Unterstützt werden Samplerates von 44,1kHz – 192kHz.
2) Genauigkeit abhängig von der Kalibrierung.

Check filter
Distortion loudspeaker box
Frequency response of entire speaker
Testing the driver: frequency response + impedance
Test audio network player. Signals from cell phone
Determine Thiele Small parameters (Vas, Qts..)
Check the tone control
Determine component values
Distortion (THD, k2..7) Amplifier
Impedance curve loudspeaker
x1Analyzer - Audio Messungen