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Dual 10" coupling

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John Boom View Drop Down
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Joined: 19 July 2021
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Post Options Post Options   Thanks (0) Thanks(0)   Quote John Boom Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2021 at 12:52pm
Your mid spacing will lead to lobes in the vertical coverage pattern. The main lobe will get smaller as you go up in frequency. The size of that lobe at your crossover freq is a limit on the vertical coverage angle of the system. So, the narrower your design vertical coverage, the higher the crossover frequency can be. Using this method you can space the drivers more than a quarter-wave.

What you have to trade against this is, can your compression driver/horn combo really go that low and not start to distort at power? Manufacturer's specs can be misleading - you often have to double the specified usable lower limit. And compression drivers have a harder time driving smaller horns. Generally, beefy comps and carefully chosen horns with the lowest possible horn cutoff freq are the way to go.

Edited by John Boom - 28 August 2021 at 2:58pm
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