Hello Tim, Did you find a solution ? I'm trying to achieve the same for my 2" fullrange speaker. I have tried Low Pass (id 1672 # 4 Pole Low-Pass Filter with Resonance (FCRCIA) (1672/lp4pole_fcrcia_oa)) + Harmonic Gen (harmonic_gen_1220.so) but it doesn't work the way I want or probably I don't fully understand how Harmonic Gen works Best Regards, Jean -- View this message in context: http://linux-audio.4202.n7.nabble.com/Sub-harmonic-generator-LADSPA-or-VST-tp15678p101074.html Sent from the linux-audio-user mailing list archive at Nabble.com. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user