I`m sorry TNRabbit, I haven`t checked this forum for a while.
What I meant to say was that dipole bass is inaudible below 30Hz, not a boxed one. In fact, I believe all those great dipole loudspeakers,
including Carver Amazing, could benefit below 40-30hz with some boxed subwoofer assistance. My electronic equipment, amps and source, are perfectly flat down to a few Hz, 100%.
The planar magnetic and ribbon descriptions are not from my site, I`ve just included it to help clarify the difference between these two driver types.
Planar magnetic is a transducer that has a mylar (or alike) foil stretched like the Carver Amazing unit, the voice coil is glued or deposited onto this foil and the magnets are either in a "single ended" arrangement (one side only, at the back) or in the "push pull" arrangement, which means the magnets are on both sides of the foil.
Ribbon has a aluminum foil which is clamped only at the top and the bottom, while the magnets are located at the sides of the ribbon membrane.
Since you are most likely familiar with the carver Amazing planar magnetic unit (magnetostat), I`ve included a few links about true ribbons:http://www.soundfountain.com/amb/ribbon.htmlhttp://www.magnetostatic.com/http://ldsg.snippets.org/ALSR/RibbonCon ... ns_01.html
Rainman, these loudspeakers have no box on purpose, they`re dipole loudspeakers just like Carver Amazings were or the Gilmores, remember? I have verified the low frequency reproduction with test tones and listening.http://www.glacieraudio.com/new%20Glaci ... audio1.htm
Nice farting discussion guys!