Brandonbkd Posted December 20, 2013 Report Share Posted December 20, 2013 What exactly are the pros and cons of going this way? Also, could you just take the magnet off a sub and use that as a passive radiator? FI BL18 Build Log: CLICK HERE!! 2003 Explorer Sport: FI BL18 SoundQubed 2200 at 0.7ohm Pioneer DEH-2500UI Pioneer 6 x 8s Rockford Fosgate 6 x 9s 5 ft^3 box at 35hz Lots of Mega Mat Link to comment Share on other sites More sharing options...
Krakin Posted December 20, 2013 Report Share Posted December 20, 2013 This has a lot of info on passive radiators. http://www.subwoofer-builder.com/passive.htm Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
bbeljefe Posted December 20, 2013 Report Share Posted December 20, 2013 Pros... no port noise. Cons... a bit more difficult to calculate but only because they're not common. Also, they take up a lot more real estate than a port. And the first passive radiators were, in fact, drivers without the motor. We called em drone cones back in the day. Facebook: facebook.com/audioanarchyllc Instagram: audioanarchyllc Youtube: youtube.com/bbeljefe Link to comment Share on other sites More sharing options...
Mha Posted December 21, 2013 Report Share Posted December 21, 2013 I was lookin for a bass boombox and came across the kick ik boom boxes. In the back they have a sick lookin 6in square subwoofer. Well I thought it was a sub. It looked like it had some good bass. Later I lound out is was passive radiator not a sub. Anyways just made my own speaker box with 6.5 componets and wanted to do a little port or would a passive radiator be better? Link to comment Share on other sites More sharing options...
bbeljefe Posted December 21, 2013 Report Share Posted December 21, 2013 If they're mids they really don't have enough xmax or a low enough frequency response for a PR. A port might be okay, depending on how much air space you have them in but I wouldn't bother with finding a PR for them. But if you do plan on it, plan to find an 8 or 10" PR for two sixes, because you need more cone area for the PR than you have for driver pistons. Facebook: facebook.com/audioanarchyllc Instagram: audioanarchyllc Youtube: youtube.com/bbeljefe Link to comment Share on other sites More sharing options...
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