I was just thinking this might've been another one of those: "Wow, those tiny speakers sure can make bass, wonder if I can DIY that cheap?" kinda threads.
Short answer: The tiny speakers by BOSE or whatever brand DO NOT make deep bass, what they do is: Acknowledge the fact that there are physical laws, and aim for reasonably flat or rising peak towards ca 80hz, before they drop like a rock.
It's an illusion of deep bass. Play a note at 70hz and you get hardly anything at all. There are some that resolve to DSP trickery to get a little boost when playing low, but turn up the sound like it's a party, and the "wow that's impressive!" factor takes a nosedive the more volume is increased. The slightly bigger "boomboxes" use the same tricks, but they do go just a tiny bit lower, what some may call "the big'uns" can maybe go well to 60hz, but they are not magic either, and run out of ooomph if you think a little bit about pushing them.
There's no magic, get a cheap DSP, play around with ported enclosures that go flat-ish until they roll off hard, set the DSP to aggressive highpass to control cone excursion below box FS, that's all the magic involved, nothing else.
Deep bass from a tiny box is just an illusion at best.
Short answer: The tiny speakers by BOSE or whatever brand DO NOT make deep bass, what they do is: Acknowledge the fact that there are physical laws, and aim for reasonably flat or rising peak towards ca 80hz, before they drop like a rock.
It's an illusion of deep bass. Play a note at 70hz and you get hardly anything at all. There are some that resolve to DSP trickery to get a little boost when playing low, but turn up the sound like it's a party, and the "wow that's impressive!" factor takes a nosedive the more volume is increased. The slightly bigger "boomboxes" use the same tricks, but they do go just a tiny bit lower, what some may call "the big'uns" can maybe go well to 60hz, but they are not magic either, and run out of ooomph if you think a little bit about pushing them.
There's no magic, get a cheap DSP, play around with ported enclosures that go flat-ish until they roll off hard, set the DSP to aggressive highpass to control cone excursion below box FS, that's all the magic involved, nothing else.
Deep bass from a tiny box is just an illusion at best.
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