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THX Ultra certified

All our 1723 speakers are Certified by the very strict testing protocols of THX Ultra where each speaker must pass a set of 400 measurements. The THX Certification does not mean it is a dedicated homer speaker, but rather a guarantee of tight consistency within well-established acoustic parameters. THX Certification is as much about music, as for movies.

The engineers at THX Labs utilize a proprietary scientific testing methodology to ensure the
highest audio fidelity possible. All 1723 speakers passed the THX Ultra Certification without any change to the products, meaning our standards already exceed THX Ultra level out of the box!

Key tests in this program are as follows:

  • Axial frequency response
    This describes a loudspeaker’s ability to reproduce audio accurately. The test confirms if the axial frequency response is balanced and flat within tight tolerances. 
  • Vertical and horizontal dispersion
    Not everyone gets the middle seat when watching a movie. THX measure the off-axis response to confirm if it is smooth with no audible comb filtering. A pass at THX Ultra ensures every seat in the room is served just like the sweet spot. 
  • Output versus distortion
    This tests the speaker’s ability to reach the SPLs necessary to achieve THX Reference Level within certified limits of distortion at the listening distances required by THX Ultra.
      1723 Series Comparison Subwoofers
      Woofer 13.8"
      2 x 13.8" 2 x 13.8"
      Enclosure High Density Fiberboard (HDF)
      High Density Fiberboard (HDF)
      High Density Fiberboard (HDF) High Density Fiberboard (HDF)
      Amplifier Avalanche 500DSP - 500W RMS
      Avalanche 500DSP - 500W RMS
      Avalanche 1000DSP - 1000W RMS
      Avalanche 1000DSP - 1000W RMS
      Design Sealed
      Sealed / vented
      Sealed Sealed / vented
      49.2H x 33.5W x 45D cm
      63.7H x 45W x 55D cm 54.2H x 42W x 50D cm 71.2H x 50W x 60.9D cm
      Weight 24.5 kg 48.1 kg 41.4 kg 60.1 kg