This DIY loudspeaker system experiments with multiple small wide-range transducers in a multiway configuration. The idea is to join good directional characteristics to coherence and power handling. Another goal is to improve timing by controlling the phase with FIR filters. Please follow this link:
The Magical Number Seven, Plus Two
The Magical Number Seven, Plus Two
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Very interesting and great to see some creativity in the approach you took. I'm very curious if you compared your 4 way approach with a three way approach like tekton does. Theirs provides symmetrical directivity control much like a waveguide. I would expect some unfavorable things in the vertical vs horizontal polar responses with your design. Thanks for sharing! Craig
Thanks for your interest, Craig. It seems that the Tekton array uses one tweeter for the high frequencies and six for the mid-range. The resonance of these 1" ring domes being around 650 Hz, one can guess their operating range. In contrast, my 7 drives 3-way virtual coaxial speaker is wide range with a subwoofer crossover at 123 Hz. As for the polar response, I assume it resembles a MTM configuration but with linear phase filters. It seems also that there is some beneficial directivity in the low frequencies that counteracts the baffle step. Rob
Boden, there are only two drivers for the midrange, the upper and the lower ones. The four side drivers are for the bass. The tweeter is in the middle. Sorry but I didn't made off-axis measurements, maybe when I come back home (I'm on holidays in France).
Thanks Alex, Happy New Year to all!
Thanks Alex, Happy New Year to all!
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