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In the linked thread “Munich High End 2010..” while taking with Joe the Archeologist I was mentioning the fundamental flows of open baffles. Still, the presence of disadvantages circumstance is not a red flag for somebody actively or my interest.  Here a case to point.

A friend of mine (in fact two of them) has Klangfilm Bionor. I “mint” and original and he very much worships it’s “originality”. I do not like this speaker become many reasons but they have some “moments” worth to capitalize upon. Her is a guy, presumably a Chinese guy, who make an attempt to take Bionor a bit further then Klangfilm Bionor originally was intended to. Let analyze what he was trying to do.

The speakers I hope use the Bionor’s standard pair of 14-inch woofers, most likely KL L405 - very good woofers. The Klangfilm own MF horn got trashed and the 12 section multi-sell was introduced. It is driven by look like WE or early Altec electromagnet compression driver. The MF horn looks like 150-180Hz exponential. I presume that MF driver runs down to 250-300Hz. This is a huge step over the Klangfilm original design where MF was shooting into a horn with much higher cut off.  The there is some kind of tweeter, I presume the slot type JBL, or the similar.  Due to depression they mount it on the front baffle. Interning that it is not flat with front baffle but a bit indented. I wonder why it would be so.  I presume that since the tweeter is not time not alighted whoever did it were trying to set the tweeter a few periods ahead but still in-phase, at least this would be what I would do. There is a strange looks like another tweeter at the bottom of the bass horn. I do not know what it does and if it is a tweeter then I would not do it.

I kind of like what this Klangfilm was trying to do, if somebody know the speaker owner then invite him to describe what he was doing. What this speaker doe is in my view the sanest approach to the Klangfilm Bionor without drooling the vintage saliva and without diving in idiotic hysteria about the advantage of vintage audio.

Rerurn to Romy the Cat's Site