I'm wonering what are the cons of doing a circulr array of small 2.5-3 inch midrange drivers around a tweeter ? . Just like in tekton speakers but with surrounding midranges instead of tweeters.
https://positive-feedback.com/wp-content/uploads/2018/07/impact-a-10_orig.jpg
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Hi,
Did a quick simulation with BoxSim, using six 4" Visaton W100S-8 mids in a circular array. The power response between 200 - 2000 Hz is evenly but quite fast decreasing. As shown in the figure, the directivity of the mid array rises fast, thus finding a suitable tweeter and fitting the wave guide between the mids could be a challenge.
Did a quick simulation with BoxSim, using six 4" Visaton W100S-8 mids in a circular array. The power response between 200 - 2000 Hz is evenly but quite fast decreasing. As shown in the figure, the directivity of the mid array rises fast, thus finding a suitable tweeter and fitting the wave guide between the mids could be a challenge.
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I would do a circular array only for directivity reasons. To achieve a constant directivity the crossover becomes very crucial. The Tekton crossover is available in another thread at diyaudio but I have doubt whether the Tekton really produces the smooth narrow constant directivity that is often claimed. Now there are measurements published at sterephile for one of their circular arrays but they are in format which makes it very hard to understand.
The result is steeply rising and high directivity. With a deep horn tweeter or compression driver you will get a a nice and accurate monitor speaker for a single listener sitting at the spot!
Tekton Impact is however a really good compromise.
Tekton Design Impact Monitor loudspeaker Measurements | Stereophile.com
Tekton Impact is however a really good compromise.
Tekton Design Impact Monitor loudspeaker Measurements | Stereophile.com
Instead of an equidistant circular array, a taller, oval shaped array would provide a wider sweet spot and more even directivity rise. With the oval shape of an array, the peaks and dips in vertical and horizontal directions would not be coincident.
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