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Multi-Way Conventional loudspeakers with crossovers

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Old 19th December 2012, 03:59 AM   #11
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Location: San Diego
Here's some more pictures of stargate

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Overhead view of the device

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The very wide vertical dispersion is due to the VERY narrow vertical mouth. Just one half of a centimeter. The big black plastic roundover is there to reduce diffraction at the mouth. The reason that it's only rounded on one side is that it's designed to be placed in a car, where the dash extends the curve on one side, but not the other.

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This is the on-axis response of the device

My measurement technique isn't terribly sophisticated; this was measured using the RTA on my iPad, on axis, at approximately 2 feet. Levels are fairly low as I didn't want to blow up the compression drivers. (There's no xover in the mix.)

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This is the same measurement, at 45 degrees off axis. Note how similar it is to the on-axis response. (Ideally we'd want the exact same shape, but at a reduced output level.)

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The two graphs overlayed.

Not too shabby huh?
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Old 27th December 2012, 06:14 PM   #12
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How is it sounding?
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Old 28th February 2013, 12:39 AM   #13
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Turned out really well actually! It's amazing how directional it is, and how smooth the response is, considering the reflectors.
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Old 28th February 2013, 12:45 AM   #14
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Quote:
Originally Posted by planet10 View Post
We know, we know... nothing less than a 15" Tannoy can possibly do the job.

dave
What's so good about 15" Tannoys anyway?
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Old 28th February 2013, 06:53 PM   #15
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Size matters.
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