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white papers
white paper
Crossover
Filters.
P. Williams - July 06

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podware download
PODWARE V 5.64.0
Released 08/03/11

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dsp .net

Linea’s X-Pod range of amplifiers for use in active loudspeaker applications come factory-fitted with a choice of DSP option cards. The DSP.Net card provides Digital Signal Processing and BvNET networked setup, monitoring and control. DSP.Net provides generous amounts of signal processing capability, with access to a wide variety of crossover shapes.

DSP.Net is capable of crossovers up to 8th order (48dB/Octave). In addition to the usual Butterworth, Linkwitz-Riley and Bessel filter shapes, DSP.Net provides access to Hardman crossover filtering, a technique we are proud to have introduced to the industry. Hardman filters produce much steeper cut-off slopes for a given order than conventional crossover alignments, without any additional group delay. This allows a lower order filter to be used without sacrificing cut-off characteristics, but with smoother group delay and less severe phase penalties, giving a more natural sound. Hardman filters also provide identical phase characteristics between adjacent bands (like Linkwitz-Riley), so the polar performance is rock steady.

As the OEM, you have complete freedom to edit the crossover, driver equalisation and driver delay parameters. You can also apply a model name for the loudspeaker. Once a complete tuning has been prepared, PodWare allows you to save a Factory file which contains all these parameters. This file can then be used to load settings in production. Should you wish to change the OEM settings in the field, modified Factory files can be distributed and loaded by the user without disturbing the user-settings, and without the user being able to access the OEM settings.

  • Two independent channels
  • High quality 96kHz audio processing
  • Separate OEM and User settings
  • Temperature monitoring
  • Driver impedance monitoring
  • Abuse logging
  • BvNET networking

For more information and full details on the DSP.Net processor unit please follow the links to the left to download the data sheet or contact us for more information.