NOTE: This preset is for PE version 4.7.x
Put files to ~/.config/PulseEffects/output
Preset was created primarly for Z333 & Z337 and also was tested on Z333, but probably/maybe can be used on any 2.1 speaker. Preset can be customized for Your needs and Your audio system.
Preset is focused primarly for music.
For best experience, I recommend to set subwoofer "volume" at half (50%), on back of Your subwoofer. Like on this image: