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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: Re: Using AJ-Horn to examine filter networks - how should certain things be viewed? posted by Bill Fitzmaurice on February 19, 2007 at 10:15:45:
Modeling programs assume the cone acts as a rigid piston, but this is only the case at low frequencies. When the cone enters breakup, it acts sort of like an array of smaller radiators, not a single rigid one.Breakup modes aren't confined to the (dome) voice coil cap. The entire cone has ripples across it when in breakup. The thing is the dome of the voice coil cap is centrally located, so when it's in a horn, that's what is exposed to the throat and so is naturally louder.
Another thing at issue is directivity. Sometimes people don't take collapsing DI into account, and look only at power response instead. If you see falling power response, but also have collapsing directivity, the on-axis response may be a flat line even though the power response droops.
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- Rigid piston models - V 12:39:03 02/20/07 (0)
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