There are a few subwoofers that offer multiple equalization, gain, etc. settings that can be saved to memory presets.
I believe SVS Ultra offers three presets with their version of digital signal processing DSP.
Velodyne DD Plus offers an extensive version of remote controlled auto and manual DSP with six factory or customizable presets. A Sweep Tone CD that provides and in room response of your main speakers and the sub/s from 200Hz.
DSP and equalization can vary greatly from auto only setup to auto-manual discreet multi frequency band multi parameter adjustments.
If your shopping read their manuals first.
I believe SVS Ultra offers three presets with their version of digital signal processing DSP.
Velodyne DD Plus offers an extensive version of remote controlled auto and manual DSP with six factory or customizable presets. A Sweep Tone CD that provides and in room response of your main speakers and the sub/s from 200Hz.
DSP and equalization can vary greatly from auto only setup to auto-manual discreet multi frequency band multi parameter adjustments.
If your shopping read their manuals first.