Speaker Asylum

General speaker questions for audio and home theater.

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You probably didn't notice...

Posted by kootenay on May 12, 2017 at 10:26:34:
* sign on the specs where it stated that the speakers can only achieve this frequency response if you buy the optional external filter. This external filter gives the possibility of extending the response down to 25Hz(-3dB point) using the 6th order Butterworth alignment. This will also filter out the unwanted subsonic frequencies, which may introduce the intermodulation distortion (according to the manual).

If you look at the spec again and read it you'd notice that the speaker main crossover network that is being used is the 4th order Butterworth network.