On 08.07.2014, at 00:36, Jörn Nettingsmeier wrote: > On 07/08/2014 12:20 AM, Gregorio García Karman wrote: > >> How about using loudspeakers with cardioid characteristic in the bass range? >> >> http://www.me-geithain.de/index.php/en/studio/products/active-loudspeaker/rl901k > > I've used that speaker a couple of times, and it's fantastic. I sure would > like to build a third-order periphonic rig with those, but for the tiny > little obstacle that is the (entirely justified) price tag Joachim Kiesler > puts on those. > > It's a good addition/correction to what I said before about directivity vs. > radiating area - you can of course also obtain directivity by "wasting" some > energy to the rear to actively cancel unwanted sound, and that is a bit > easier to do for very low frequencies. > > Taken to the extreme, you end up with dipole basses, as discussed by, among > others, Siegfried Linkwitz. If you have some flexibility as to speaker > positioning, they must be very nice indeed.
Thanks for your reply. These are fine speakers indeed. I am actually mulling over the idea of setting up an TOA rig with eight of those in an acoustically treated room (55 m2). They could be, e.g., arranged in a ring hanging at ca. 2.5 m. height (ring diameter ca. 5 m). In this room we are currently working with a quadraphonic setup with four venerable RL900 at the ear level (ring diameter ca. 8 m). I was wondering whether it would make sense to combine the lower ring of four RL900 and the higher ring of eight RL901 with a view to with-height ambisonics. Cheers Gregorio _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
