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Originally posted by coulter: I dont, fill me in Eli.
Infrasonic has to do with frequencies below the audible range to us humans. Subsonic has to do with the velocity a car travels at.
But not all companies have changed terminlogy..,yet.
Its also a good idea to choose the right filter..... Usually a 18db/octave to 24db/octave are very good.. and 6db or 12db/octave you'll loose some bass output.. even if you move the filter lower.