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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: RE: 890B posted by edta on December 30, 2007 at 11:34:54:
Trust me here - it only takes a watt or two to blow these tweeters!
I used them years ago in an acoustics laboratory - they will put out a surprising amount of clean energy at and way above 20kHz if you baby them. But the voice coil is small and easily smoked. We eventually switched to a much more robust E-V driver, but it would hit a brick wall somewhere near 20kHz. Then we used the old Radio Shack "pod" tweeter, which did not have a removable horn so we had to machine our own adapter and glue it inside the horn. These were almost as fragile as the Altecs, but more easily replaceable and cheap. They would drop off smoothly to something like 10dB down at 40kHz, IIRC. Might have been Fostex made? Later I think some of the guys used an Ionovac to get the very high frequencies.
I have some Aurum Cantus ribbons around that are also easily - and quickly! - destroyed unless they are well protected from low frequencies. Fortunately I got a whole bunch of spare ribbons when we started playing with them!
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- blowing out tweeters - Paul Joppa 12/30/0714:48:22 12/30/07 (0)
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