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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: RE: Annoying Ultrasonics posted by AbeCollins on October 12, 2017 at 13:35:29:
HI Abe,Good call. I'm not sure how flat or extended the frequency response of those once-ubiquitous tweeters was, but they were everywhere for about a decade. The first speaker I saw that used them waas the Dahlquist DQ-10. It was generally agreed that the best thing one could do to improve the sound was to simply disconnect that tweeter.
Radio Shack used to sell them for $4.99 and they were used a LOT in cheap "pro" gear. They didn't require any crossover - just wire them in parallel with the speaker input. They were super nasty sounding, presumably because of horrible resonances in the piezo element itself that cuased them to ring like a bell. I suspect that the frequency response was a series of resonant peaks that extended fairly far into the ultrasonic range.
As usual, the problem is actually measuring them accurately. About the only way is with a lab-grade 1/8" condenser capsule microphone. Not a common device to have hanging around, but something the OP will likely need. Otherwise he will nave no idea what is actually happening during his "materials testing".
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Follow Ups
- RE: Annoying Ultrasonics - Charles Hansen 10/12/1718:18:10 10/12/17 (0)
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