Patent Review: Loudspeaker Enclosure with a Sealed Acoustic Suspension Chamber

James Croft reviews a design, invented in Sweden, and patented in 2018, of a new approach to an area that has been extensively researched in an effort to improve low-frequency performance in speakers. The specific design under review describes a loudspeaker enclosure housing a sealed acoustic suspension chamber, where a driver and a passive acoustic diaphragm on opposite sides are combined with a first bandpass chamber connected to the sealed chamber by the passive unit in a curved structure.

Blue decided to follow-up on the positive things achieved with its original Mo-Fi headphones and has now introduced Lola, dropping the built-in amplifier while maintaining the main positive things from its radical form-fit design. Lola shares the same custom 50mm drivers in a new lighter, slimmer design that actually allows enjoyment in comfort.

Devialet surprised the high-end world two weeks before the CES 2015 with the announcement of a completely new loudspeaker concept: the Phantom speaker. In their own words, the Devialet Phantom is “a sound center, meaning, a system that receives via Wi-Fi music from your everyday devices, it processes the signals and emits sound replacing your speakers … and it’s also the most efficient speaker in the world!

Blue Microphones confirmed the availability of their Mo-Fi active headphones with a truly unique design. The company had already disclosed for some time to be working on the project when they started advertising: “Forget everything you know about headphones”. It seems that’s what Blue did.

After extensive research of different subwoofer brands and models, Dutch company Essence Electrostatic chose SVS sealed subwoofers to pair with its new Model 1200 and 1600 Electrostatic Speakers. As a result, the SVS SB-1000, SB-2000 and SB13-Ultra subwoofers will now be available from the Essence website and its audio/video dealers worldwide.