![]() Books, Comics and Magazines:Magazines:Music, Dance and Theatre.Antiques:Antique Furniture:Cabinets:20th Century.Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Location: Wednesburry Categories Sound and Vision:Home Audio and HiFi Separates:Speakers and Subwoofers Tags (RRP, $3998, 520, and, Bohlender, Graebner, HYBRID, Planar, Radia, Ribbon, SPEAKERS The crossover uses modified fourth-order Linkwitz-Riley filters, with an in-phase driver connection.”Ĭlick here to buy, and to see similar items on eBayĬategory: Sound and Vision:Home Audio and HiFi Separates:Speakers and Subwoofers Levitsky complements the ribbon with two 6.5″-cone woofers mounted in the 520i’s 7.75″ by 13.75″ lower enclosure, made from MDF. The ribbon itself consists of a diaphragm of polymer film strung with aluminum conductors, which carry the audio signal, suspended between push-pull magnet arrays. The 520i’s ribbon covers the spectrum above 350Hz and fires through a 30mm-wide slot in an aluminum frame. Levitsky mounted the 520i’s ribbon driver in a tall, open aluminum frame to minimize cabinet resonance effects. A line-source speaker radiates a cylindrical wavefront, which suffers milder propagation losses than does a conventional cone driver. This narrow driver offers wider horizontal dispersion than a panel speaker, while suppressing strong early reflections from the floor and ceiling by acting as a line source. (aka BG Corp.), has taken advantage of the slim tower motif in the design of the Radia 520i speaker, which has a 50″ midrange-tweeter ribbon driver. Igor Levitsky, speaker designer for Bohlender-Graebener Corp. While these slim speakers fit more easily into home dcor and living spaces, to fill out their bass response they depend on being used with the subwoofers that are standard in multichannel systems. Large floorstanding cabinets, required for reproduction of bass frequencies, are being replaced by tall, graceful towers with small footprints. “Loudspeaker cabinet design has been strongly influenced by home theater. These are narrow “quasi-ribbon fullrange” magnetic planar drivers from 350Hz on up, a pair of 6″ woofers below that for down to 80Hz.Ĭan deliver 50miles radius free, then 50p per mile They play as loud as I could wish, with small class A amps, which deliver about 15 watts to the two drivers.Īmazing sound! And highly recommended.Click here to see similar items on eBay, and to buy.īohlender & Graebner Radia Planar Hybrid ribbon speakers They are more fleshed out than any electrostatic speakers I've heard, my own diy, or store bought ones. For movies, I actually prefer 2 channel sound, with these. Zero need for a centre channel, with Pink Floyd's SACD surround sound disc, or on movies, either. Kenny Wayne Shepherd's debut album is unraveled, for a smooth deep soundstage, without losing the guitar or vocalist's snarl.Įven ultra mellow fare, like Al Stewart's Year Of The Cat, has the contras t turned up enough to make it involving, all the way through. Glare is removed, even from New Year's Day, by U2. It's flat out amazing how the clarity jumps up several notches, with the drivers now cutting excursion in half, for the same loudness as a single driver. With a Neo 8 PDR handling things from 3000 Hertz up, and three 1525e woofers handling things up to 250 Hertz, two of these in a vertical line produce the cleanest, most detailed, realistic midrange I've ever heard in my living room, which have had some speakers in it, maxing out at $8000. I add these to the pair already owned, along with easy to use flush Mount plates made by Meniscus Audio.
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