I'm saying that a horn does not reach its actual function as a impedance matching device until it is many wavelengths long and has a mouth that is more than a wavelength across. below that it starts to look more and more like a simple port - a tube with no wall flare. So a short horn on the front of a woofer is basically a front ported enclosure.Sorry, yes to me Journal means AES journal as its probably the only one I ever read.