produce, reproduce yeah. as for the things resinating yeah they should produce the note they resinate at but for you to hear the note something ( i dont know what, maybe the box, or whatever the string, ect . is in) must change for what you are saying to be true, which it must be but i dont get how, you must be stating the resinant frquency and for that frequency to be heared SOMETHING? must change. i didnt say it was called sub bass I was explaining the reason why they are called subs, sub sonic, below sound, super sonic, above sound. it may not be the only term for it but it the reason subs are named (maybe they should be called infrasound speakers or something!) . I totally see your point, why make it if you cant hear it, maybe i have never heared a piano or organ that can produce it, and maybe it does make a movement feeling for people but it cannot make a sound humans can hear, dogs and cats are very different but it is impossible to actually hear it because, im pretty sure its the bones (or maybe your ear drum or a receptor in your brain) that pick up the audio waves in your ear cannot resinate at that low a frequency, i dont know the exact range but i know its not that low. a perfect example is if you have some subs or no someone who has, make a 30hz tone with audacity or similar program 'listen' to the tone, doesnt matter really how loud, then stick your fingers in your ears, the percieved 'volume' doesnt change. you also cannot get 'earpiercing' bass, very low sub bass (30 hz down) is more similar to an earthquake. sub bass cannot really damage your hearing (unless its distorted) it will affect your heart and breathing first. I cant explain why instruments do as you say but i am sure you are right otherwise you wouldnt say, as am i about this, after a certain frequency it changes from bass ( or mid bass) to proper earthshaking bass (sub bass) where, if you could hear it at a level where normal bass or any other sound would blow your eardrums, sub bass wont, the amps in my car = about 300 w for the normal spks but over 1000w for the subs, and the subs really need more power to balance it (admittadly it takes more power to produce but), the decibel ratings for the normal speakers would be well below the subs, but the normal speakers 'sound' much louder. with 1000w of tweeter or normal speaker power that close to you im pretty sure your ears may never work again.
