Rerurn to Romy the Cat's Site
In the Forum: Audio Discussions
In the Thread: A listening room for a domesticated Cat?
Post Subject: KHorn facts and truthPosted by martinshorn on: 7/11/2017
Some wrong oppinions here 
As a fan I studiet it very precise. I mean very down to each inch.
The path length is 1.68 Meters, Throat 250 square centimeter (7.5x33), mouth 2x25 / 50 x 97 cm = 5000sqcmThat makes a compression of almost 4:1Gives a cutoff freq. of 50Hz (with half efficiency). Below the 50 the third harmonic dramatically increases.At about 90Hz it peaks to good efficiency, below drops with 2nd order, below cutoff with 4th.From 90 to 180 the native Horn efficiency is 111dB SPL *Above 150 to 340 the efficiency increases to 118dB SPL ** due to compression ratio.Above 340 a smooth rolloff can be achieved ***Dramatic efficiency and lower distortion can be easily achieved by stacking 2 on top of each other, connected parallel if resistance is ok.Last option makes it a brutal real-estate-tear-down machine 
footnotes:* important to avoid combfilter effects above 100Hz by using a lid (never skip it like some do!)** same rule applies to tight connection to the corner without airgaps including (ideally even lift above the baseboard from the floor) and apply a proper reflector on the edge (i use a 12cm square timber put in the edge, works as 2x45° splitter)*** 340Hz approx 3rd order rolloff is due to 7 liters driver-membrane volume working as a lopass. You can extend that 1 or even 2 octaves using a DIY-phaseplug to reduce the volume
The incredible advantage is the edge which cuts the mouth to an 8th of the size.But something more important happens:
Each normal speaker placed certain distance in front of a wall has a big problem: the alisson effect.With a quarter lambda distance to the wall, the usual speaker with 3 foot distance has a steep notch nockout around 80-90Hz.Using the Khorn will prevent ANY reflections from floor or walls. You get a really neat smooth response over many octaves.The alissons work like a notch, and such resonate very long time after. Not having such on the K's is in my believe one of the keys to the dry crisp sound. Apart from low intermodulation distortion. Read this (german translation) from Klipsch himself:
http://allabout-hifi.magnetofon.de/index.php?topic=490.0
Different chapter is the timealignment. You can actually only overcome that via DSP delay.I also skipped that one some passive XOs and you can hear that even crossing quiet low.On drums especially, instead of a crisp punch, you get a soft bouncy rolling "tock-flummmm" drum.Its subtle, good ears will notice, its a coloration yes, but one of the very pleasant ones! As it takes the harshness without getting boomy at all.I must say i love the fact not having wall reflections, so i use 2 stacked left and right, stereo, 90-340Hz.Due to the hi crossover @ 340 it pulls the lows a slight note wider and deeper into the stage. Which makes it actually more realistic and live-alike (considering the technical problems of stereophonic phantom-source location of low tones getting more monaural in human perception).
My 2 cents Rerurn to Romy the Cat's Site