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In the Forum: Audio Discussions
In the Thread: Hørning prøblems.
Post Subject: Re: Hørning prøblems.Posted by Thorsten on: 5/22/2005

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Roman,

 Romy the Cat wrote:
Last year the speaker was presented by “Horning Hybrid Perikles” importer who told me that they demonstrated: “3-ways loaded into the same horn loudspeaker”. I asked him to explain what dose it mean “3-ways loaded into the same horn”. The importer began to spread such foolishness that I was looking at his face trying to determine if he was just kidding or if he really was an idiot.
Funny that, as his description of Hoerning Speakers work was pretty accurate.

Ignoring the rest, I think it best if I cover a little how these things work.

First, the Lowther has ze wizzer cut off and has an Equalisation circuit to flatten ze upper midrange bump. Otherwise it is run fullrange, that is WITHOUT HIGHPASS OR LOWPASS.

Secondly, the Hoerning principle is actually more accuratly a dual folded TQWT, not a horn. The TQWT housing the Lowther and that housing the rear mounted woofer are of different length and are in effect mounted back to back. However, the division between the two end sections of the two TQWT's is missing and thus in effect there is just one "horn mouth" and beyond a certain point the horn becomes one. So, if we want to view the Hoernings as Horns we have a split throat single horn.

Crossovers on woofer and tweeter are 1st order and the woofer(s) carry on quite high up in frequency to support the Lowthers lower midrange.

The merits or not of such a system are debatable, the Hoerning speakers I have heard in detail (Perikles & Agathon) where pretty decent but a little bland and average, good average speakers with aove average sensitivity was my reaction. And yes, Real Hi-Fi (where I am de-facto tech & modketeer) does distribute Hoerning in the UK, so I'm quite intimate with the design.

Ciao T

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