Quote:
Originally Posted by hobie1dog
there are hundreds of 2-way speakers that use a 15 inch woofer and a large constant directivity Tweeter or horn loaded Tweeter ect. that play well up into the 2500 Hertz range and very flat ....you would have to look at lots of frequency response charts to realize this.
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Thanks for the input but it doesn't answer my question. These woofers operate down to 18 Hz. They are sealed. It's etremely unusual. I just wondered why. But no problem if no one is interested.