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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: how does pushed in dustcaps affect sound? posted by cloudwalker on April 14, 2015 at 18:06:23:
These are to be taken as general comments only from an amateur with no engineering background!
As I understand it, the dustcap in a cone driver is essentially there to keep dust and debris out of the voice coil gap. It has little effect on the driver's ability to move in a linear fashion to an applied audio signal. It is a little disk of material glued to the cone at its edges. If properly designed and placed, a small dent in it ought not to make much difference in the driver's sound. Of course, if some drunk kicks in the center of the speaker, the voice coil or other parts may be mis-aligned and sound will be affected.
A dome tweeter, it seems to me, is far more likely to have its sound negatively affected by dents. The dome is the radiating surface, in direct contact with the air, pumping away at that air to generate sound. It is very small. If the shape of these domes is compromised, so is the geometry of the resulting wave front. I am always very skeptical of sellers of used equipment who claim that a dented tweeter dome "has no effect on the sound". That just seems counter-intuitive to me. If I were buying used speakers, I would want to know whether replacement tweeters were available from the maker and what they cost before I put my money down on dented tweeter domes. I'd typically wait for an undamaged unit.
Perhaps someone with more technical expertise can comment on this?
Best,
George
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Follow Ups
- RE: how does pushed in dustcaps affect sound? - George S. Roland 08:25:17 04/15/15 (1)
- pushed in dustcaps - hifitommy 11:37:01 04/19/15 (0)
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