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In Reply to: RE: 15" Woofer for 2-way project posted by Inmate51 on November 06, 2014 at 08:19:33
Well, that's specifically what I'm worried about and thanks for bringing it up. I have the Altec 416-8C with new GPA cones (they are my brother's). They don't sound good at all playing in the range where I want them, hence the question. The only driver I've heard play well into this range is the B&C 15cx40 coaxial on an open baffle. Now it has a 3" voice coil with edge wound aluminum wire, and so this is why I'm looking at something similar from B&C (15CL76). What's your thoughts on a High BL 12" in a small sealed enclosure complimented by a 15" Dayton Audio Subwoofer with huge xmax and low FS?
Follow Ups:
I would go with a good 15" on the bottom, but would put a 6-8" or so in between it and the compression driver. Cross the 15 at a couple hundred Hz or so, run the 6" up to maybe 2K, and let the compression take over from there on up. Obviously, this is a general idea, not a specific design, but it will result in better sound and more uniform dispersion than a 2-way 15" with a compression driver.
:)
If you cross a 15" at 900Hz to a compression driver you get uniform, controlled dispersion from over an octave lower than in your 3way example.
The price you pay for this improved dispersion is increased IMD below 900Hz.
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