TimR Posted January 12, 2013 Posted January 12, 2013 [quote name='Bill Fitzmaurice' timestamp='1358009552' post='1931822'] A bit, but people have been studying this stuff since circa 1876, so at this point there isn't anything in the realm of audio that hasn't been scientifically explained. But it's not the sort of stuff they teach in secondary schools, nor even at the university undergraduate level at most institutions, not even those with EE programs. [/quote] Well, they do here in the UK. At secondary school we do the double slit experiment with light. Anyone who has seen that will instantly understand about 4x10s. I think the biggest thing to understand is beaming. The wider the source, the lower the frequency at which beaming becomes an issue. As you said above 4x12s are very directional for guitarists and 15" and 18" cause problems for bass players standing too close to their cabs. As for multiple size drivers in hi fi, you're using near field cabs as opposed to large far field cabs and speakers. Typically the largest speaker in a hifi will be 8". Plenty loud enough and practically omnidirectional at higher frequencies. Quote
Bill Fitzmaurice Posted January 12, 2013 Posted January 12, 2013 [quote name='TimR' timestamp='1358011860' post='1931859'] At secondary school we do the double slit experiment with light. Anyone who has seen that will instantly understand about 4x10s. [/quote]I guess most bassplayers nod off during that demonstration. Quote
TimR Posted January 12, 2013 Posted January 12, 2013 Well, it's not exactly rocket science... ...more like particle physics. Quote
flyfisher Posted January 12, 2013 Posted January 12, 2013 My school physics lessons included wave theory demonstrated using called ripple tanks like this: http://www.youtube.com/watch?v=-8a61G8Hvi0 Quote
Bill Fitzmaurice Posted January 13, 2013 Posted January 13, 2013 (edited) [quote name='flyfisher' timestamp='1358029850' post='1932209'] My school physics lessons included wave theory demonstrated using called ripple tanks like this: [/quote]There are a few nice tools found along with this one, from your side of the pond,www.acoustics.salford.ac.uk : [media]http://www.acoustics.salford.ac.uk/feschools/waves/flash/diffractionslider.swf[/media] Edited January 13, 2013 by Bill Fitzmaurice Quote
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