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@kota1 ya I don't think bass makes midrange sound better because it is part of a harmonic foundation, of course I'm not talking about music I'm talking about comfort in listening to your entire sound system. I understand how fundamentals, harmonics 5ths, 3rds and the rest of musical chords work. I not exactly sure but it seems like this ideas isn't true because in ambiences in nature or used behind a movie scene the low end sets the tone for content feelings high end sets the tone for bad feelings to be overly simplistic . Actually sound in movies is a lot like music ambiences random sounds can be signals to make you comfortable, or discontent, it's not about harmony in chords it's more about the lack of assaulting mid and high frequencies and the addition of warm low end when you are supposed to feel a certain way. As far as why the bass makes such a difference in midrange in music I do think harmonics help but remember there are always harmonics and good sub energy is not about the fact that there is low end present but the way the low end acts in the presentation of the music, in other words bad sub sounds don't help even though the harmonics are still there. 

@kota1 ya I don't think bass makes midrange sound better because it is part of a harmonic foundation, of course I'm not talking about music I'm talking about comfort in listening to your entire sound system. I understand how fundamentals, harmonics 5ths, 3rds and the rest of musical chords work. I not exactly sure but it seems like this ideas isn't true because in ambiences in nature or used behind a movie scene the low end sets the tone for content feelings high end sets the tone for bad feelings to be overly simplistic . Actually sound in movies is a lot like music ambiences random sounds can be signals to make you comfortable, or discontent, it's not about harmony in chords it's more about the lack of assaulting mid and high frequencies and the addition of warm low end when you are supposed to feel a certain way. As far as why the bass makes such a difference in midrange in music I do think harmonics help but remember there are always harmonics and good sub energy is not about the fact that there is low end present but the way the low end acts in the presentation of the music, in other words bad sub sounds don't help even though the harmonics are still there. 

@donavabdear would not those natural sounds have harmonic structure? If the bass is not correct, then the sound is not correct. I have a different emotional reaction to what sounds like real thunder versus something that sounds like "fake thunder". One makes me think of summer storms, and rain. The other makes me think of bad EDM.

Perhaps another bad analogy. Do you ever go watch cover bands. The ones that try to mimic the original, will always be judged against the original, and if you can't do a reasonable Angus Young guitar rift, you will never be a great AC\DC cover band. Your brain can't not compare the original to what you are hearing. Compare that to a cover band that tries to make songs their own and not replicate the original exactly. It is often easier to enjoy those because you are engaged in the music, not engaged in a continuous comparison.

@donavabdear 

Your Paradigm Persona 9H bi-amped with 800 watts of SOA power will solve a lot of problems you didn't even know you had (harmonics, bass, whatever).

Going once, going twice:

@kota1 you posted a picture of Titanic going down, I was there for 6 months in Mexico filming that monster. There was only one side of the ship made so every once in a while we would have a flipped day, that meant everything was switched like looking in a mirror, we did that when we needed to do a scene with odd numbered lifeboats. The men's hair was parted on the opposite side as well as all their clothes being buttoned on the opposite side, they shook hands using their left instead of their right and all the writing was backwards. The tricks in movies show how much psychology and science are used together to achieve an outcome, just like sound, except sound is more psychological because it's invisible.