Test Bench: SEAS’ New L22ROY2 8” Subwoofer from Its Extreme Line

The new L22ROY2 8" subwoofer from Norwegian OEM manufacturer SEAS offers a well-appointed feature set that includes a proprietary cast 16-spoke (8 twin spokes) cast-aluminum frame, completely open 1" deep below the spider mounting shelf. Other features include a very stiff black anodized aluminum cone and dust cap, NBR surround, driven by a 2" voice coil. This article was originally published in Voice Coil, September 2023.

This midbass woofer is the latest product from SB Acoustics to feature a Composite Sound Thin-ply Carbon Diaphragm (TPCD) cone and another significant product from its Satori Line of high end drivers. The SB Acoustics WO24TX-4 Satori features a curvilinear inverted single piece “bowl” shaped TPCD cone. Clearly a material choice that is starting to conquer a growing number of speaker manufacturers in all application segments. This article was originally published in Voice Coil, September 2023.

The Fountek brand is now being manufactured by Shanghai Nada Technology (formerly Fountek Electronics), updating a large portfolio of high-end range of transducers (woofers, midbass drivers, full-range drivers, and ribbons high-frequency devices). The device that was sent to Voice Coil is the company’s current iteration of its Fountek NeoCD 2.0 ribbon tweeter. This article was originally published in Voice Coil, September 2023.

Any form of audio and entertainment content today is produced and distributed as files, which are then streamed to consumers. MC Patel, the founder and CEO of Emotion Systems, explores immersive audio from the deliverables standpoint. The article discusses the evolution of immersive audio and all the implications of dealing with its formats and unique requirements. The article was originally published in audioXpress, September 2023.

This issue of Voice Coil is packed full of great knowledge for speaker professionals. The September 2023 issue features three Test Bench characterizations: the Fountek NeoCD2.0 Ribbon Tweeter, the SB Acoustics WO24TX-4 Satori midbass, and the SEAS L22ROY2 8" subwoofer. This issue also features our annual overview of Magnetic Materials for the Loudspeaker Industry. Peter Larsen (Loudsoft) concludes his FINE Circle tutorial with a passive crossover for his design. This issue of Voice Coil is now available in print, online, and in digital formats.

audioXpress September 2023 is a rich issue in the amount of audio topics explored and depth of analysis. Learn about the latest sound meters and acoustical simulation tools, what immersive audio really is, and what is possible with the development kits for true wireless earbuds from Knowles. Roger Shively does a full analysis of the Dinaburg C2S Concentric Coplanar Stabilizer speaker technology, Charlie Laub explains how to build a Minimally Baffled Dipole Loudspeaker, and Gary Gesellchen reveals viable bass reflex speaker designs.