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tuga wrote:

Hello Romy, Could you elaborate a bit on your experience with the toeing in of horns subject. My square mouth horns are probably even trickier than round horns to fine tune as the higher frequencies seems to radiate in a flowery (petal) shape.

Tuga,

Sure the horn toeing is very interesting subject but we need clearly undusted that it has no relation to the DPoLS topic. There are two major aspects that make horn toeing different from any other speaker horn toeing: the extremism of nearfield and much greater varying of horn frequency response with toeing. The rules of horn toeing would depend from how aggressive the horn used in nearfield, the frequency parameter derives from the depth of nearfield. If you use horn at 25 feet then the rule is very different then if you use then at 8 feet. Also, the type of the horns and allocation the signal by channels superbly affect any judgment and result of the horns toeing.

You see a horn is not self-exclusive definition and there are many horn-loaded configurations. There are also properly done horn systems and there are incorrectly done horn systems (most of them). The rules of toeing that would apply for properly done horn systems are the rules. The rules of toeing that might work with incorrectly done horn systems are no rule but juts examples to mask out other problems of this specific installation.

So, to talk about the horn toeing it is necessary to know at least the following factors: number of channels and how they crossed, properness of the channels integration, minimum integration distance (MID), relation between the MID and the distance between the MF island and the room’s boundaries, correctness of the horns death to the given amount of channels, proximity to DPoLS, reverberation time in the room at let say 60Hz, speakers opening angle, and many many other factors. As you see – without sitting in the room with a given speaker system it is very difficult to say anything certainly and to be right.  As you might see anywhere else in my site I do my best to sabotage any conversation about exact the speaker positioning. I feel that it is possible to talk “over the phone” about speaker positioning if to view the subject from 50.000 feet but as soon we hit the subject at the height of the tweeter’s proximity to floor then all generalizations are out and the specific reaction to the given listening experience shall take over.

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