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In the Forum: Horn-Loaded Speakers
In the Thread: Infinite Baffle Implementation and "Compression Sub-bass"
Post Subject: Infinitly BaffledPosted by Scott L on: 12/13/2016
Hi Paul,

I'm really not sure how else to explain it, but essentially it is "free air". The driver does not become influenced by a defined amount of "trapped air" in an enclosure, thus, it pretty much maintains it's free air specs. In my case, the drivers Qts is .707 and the Free air resonance is 17Hz. The room's acoustics becomes the final arbiter of all things, as in, my room will only support bass down to about 24Hz. 19x22x8 feet.  I sit 13 feet away from the front edge of the large round, red horns. The QUALITY of the bass is uncanny. Limitless, so to speak. There is no box sound. There only exists the pressures required to develop the "note". The push-pull, slot load mid bass, because of the pressure load (2:1, and in keeping with the thread topic) exhibits a forward thrusted
pressure envelope, that is akin to a mid bass horn, just more compact in size. It matches quite well in it's wavelaunch characteristics, to that of the horn right above it. Because both the low bass, and mid-bass, employ reaction-forced-vibration cancelling, the otherwise wasted energy that happens in a conventional enclosure DOES NOT happen here. The 60Hz low pass to the IB sub coincides with the wavelength to room size; you simply can not hear where the low bass is coming from--it loads the whole room. I have had visitors walk right up the the IB manifold and place their hand on the side-to-side support strut and ask why it is they DO NOT feel any vibration?  They obviously missed the chapter in science class that covered Sir Isaac Newton.

Thanks for the inquiry !

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