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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Max Warasila" data-source="post: 213155" data-attributes="member: 3845"><p>Peter,</p><p></p><p>My point on the 18 sound driver actually that it is both excursion <em>and</em> power limited before the RCF, and more excursion limited than the RCF, all while being one of the most expensive options for 12" drivers in the cabinet.</p><p></p><p>I'll admit I was unsure how to model the design in hornresp - I don't really have much experience using hornresp for, well, horns. But I figured it was close enough to compare the drivers. Not sure what weirdness is going on with the drivers. Maybe because the black line is power limit, which shows a disproportionately high peak for impedance maxima?</p><p></p><p>I concur with the point about reaching the limits of the linear range but not the real world operating limits of the driver higher in the passband, though I didn't state it quite so eloquently...</p><p></p><p></p><p>In an interesting turn of events, my hornresp install and exports from this simulation have vanished and I'm now back to an install of version 48 somehow, so I can't verify this, but I remember tuning my ports to 80Hz or so by hand in the simulation, or at least what I thought of as, "low enough," to be representative. If it was too high, that would mean that the excursion I show above is actually not high enough for the lowest octave of the passband, but still makes for a valid comparison.</p></blockquote><p></p>
[QUOTE="Max Warasila, post: 213155, member: 3845"] Peter, My point on the 18 sound driver actually that it is both excursion [I]and[/I] power limited before the RCF, and more excursion limited than the RCF, all while being one of the most expensive options for 12" drivers in the cabinet. I'll admit I was unsure how to model the design in hornresp - I don't really have much experience using hornresp for, well, horns. But I figured it was close enough to compare the drivers. Not sure what weirdness is going on with the drivers. Maybe because the black line is power limit, which shows a disproportionately high peak for impedance maxima? I concur with the point about reaching the limits of the linear range but not the real world operating limits of the driver higher in the passband, though I didn't state it quite so eloquently... In an interesting turn of events, my hornresp install and exports from this simulation have vanished and I'm now back to an install of version 48 somehow, so I can't verify this, but I remember tuning my ports to 80Hz or so by hand in the simulation, or at least what I thought of as, "low enough," to be representative. If it was too high, that would mean that the excursion I show above is actually not high enough for the lowest octave of the passband, but still makes for a valid comparison. [/QUOTE]
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New DIY Mid High (90deg) - AKA PM90
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