| 3 Pi Slanted Baffle? [message #62378] |
Thu, 22 April 2010 10:00  |
rkeman
Messages: 78
Registered: March 2010
Location: Florida
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Viscount |
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Audiokinesis has released a two-way design called the Rhythm Prism that offers a design similar to the 3Pi in a cabinet with a slanted baffle. The angled front baffle minimizes the need for sustantial speaker toe-in and lessens the footprint of the speaker. A 20" x 30" front baffle maintaing current driver and vent placement and total enclosure volume could be accomplished with side wall depths of about 12" and 22". Other than more complicated cabinet fabrication, does the 3Pi seem amenable to this design approach?
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| Toe-in and cabinet shape [message #62382 is a reply to message #62378] |
Thu, 22 April 2010 13:44  |
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Wayne Parham
Messages: 18786
Registered: January 2001
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Illuminati (33rd Degree) |
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Remember that the π cornerhorn is designed for placement that enforces the 45° toe-in orientation. It offers the benefits of improved imaging and coverage, constant directivity through the entire audio band from the Schroeder frequency up. This placement also sort of "tucks away" the speaker in a typically unused part of the room, so it tends to allow a much larger speaker to be less obtrusive. All bonuses, if you have the right corners.
This is true for the six π and seven π cornerhorns and also for the eight π louspeaker. All are designed to snuggle back into a room corner.
That doesn't really answer your question though, I don't suppose. The answer is, yes, you can angle the baffle. You can make the cabinet a trapezoidal shape. You can radius the entrance and exit of the port to reduce turbulence. All of those are modifications that are potentially useful, perhaps. But they also would probably require some design effort, at least some models and/or measurements for verification.
Some people radius the ports, that's probably a safe mod, and some people slightly change cabinet dimensions, maybe also safe if changes are very small. It's just really hard to know when you go past that. I think the only way to know is to build your proposed design and measure it.
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