Hi everyone,
I am using REW for several months now, and I am slowly improving my measurement and optimization method. Quite time consuming, but when we like it… :innocent:
My subject of interest is a 3 voices multi amplified system with a Xilica crossover. I measured each speaker individually on an appropriate frequency range, near field method for Low voice and 1 meter distance for Medium and Tweeter voices. Once measures are OK, I ran several EQ wizards on each speaker curve to obtain an acceptable linear response curve using limited EQ gain values. Each speaker is also affected by High pass and Low pass filters implemented in the crossover (model is JMLC “almost perfect filter” based on 3rd order Butterworth filter). Therefore, I ran EQ wizard outside the -3dB filtering range to optimize the overall curve (i.e. within the filtering range, at crossing frequencies and outside).
The Generic equalizer can simulate High pass and Low pass filters. These filters are not implemented in the Xilica, so I have to swap between Generic and Xilica which is not perfect but acceptable. I found that I have to manually adjust EQ to better match the LP & HP filtered curve. However, I have no idea of what the characteristics of these LP and HP filters are (2nd order?) and no possibility to setup a filter of my own (Butterworth, Linkwitz–Riley or Bessel). No additional options in the Target Settings section… My manual EQs are maybe not that appropriate.
That’s why I suggest to create a new function that would enable to setup a Butterworth, Bessel or Linkwitz-Riley LP and HP filters. EQ would be defined as they are currently done, but simulating LP and HP filters would give an overview of the very final result. That would be perfect!!!
Hope to see this in the coming weeks…
Regards
Philippe
I am using REW for several months now, and I am slowly improving my measurement and optimization method. Quite time consuming, but when we like it… :innocent:
My subject of interest is a 3 voices multi amplified system with a Xilica crossover. I measured each speaker individually on an appropriate frequency range, near field method for Low voice and 1 meter distance for Medium and Tweeter voices. Once measures are OK, I ran several EQ wizards on each speaker curve to obtain an acceptable linear response curve using limited EQ gain values. Each speaker is also affected by High pass and Low pass filters implemented in the crossover (model is JMLC “almost perfect filter” based on 3rd order Butterworth filter). Therefore, I ran EQ wizard outside the -3dB filtering range to optimize the overall curve (i.e. within the filtering range, at crossing frequencies and outside).
The Generic equalizer can simulate High pass and Low pass filters. These filters are not implemented in the Xilica, so I have to swap between Generic and Xilica which is not perfect but acceptable. I found that I have to manually adjust EQ to better match the LP & HP filtered curve. However, I have no idea of what the characteristics of these LP and HP filters are (2nd order?) and no possibility to setup a filter of my own (Butterworth, Linkwitz–Riley or Bessel). No additional options in the Target Settings section… My manual EQs are maybe not that appropriate.
That’s why I suggest to create a new function that would enable to setup a Butterworth, Bessel or Linkwitz-Riley LP and HP filters. EQ would be defined as they are currently done, but simulating LP and HP filters would give an overview of the very final result. That would be perfect!!!
Hope to see this in the coming weeks…
Regards
Philippe