Low Frequency in Loudspeakers: It’s All About the Bass!

All the speaker design techniques to achieve more bass, challenging Hofmann's Iron Law. The same bass in a smaller enclosure? Deeper or louder bass for the same enclosure back volume? Higher efficiency for a given alignment? A cleaner lower distortion bass? Learn about the companies, products, and technologies that make all this possible. This article was originally published in Voice Coil, November 2023.

From midbass to bass, Voice Coil November 2023 provides the lowdown on some of the loudspeaker industry's most interesting developments. James Croft explores a recently granted "Venturi expander" patent. Mike Klasco explores speaker design and signal processing techniques to achieve more bass, and Vance Dickason characterizes the Wavecor WF152BD09-04 6" midbass driver, and the UF295FAS Ultra Flat Series 10" thin-profile dipole woofer from Neotera.

Klippel released the dB-Lab 212.616 and QC 7.5 maintenance update for the Klippel Analyzer System. The October 2023 software release is now available and features significant revisions to the Klippel Endurance Test (KET) as well as extended analysis opportunities for R&D modules like Multi-Tone Measurement (MTON) and Time Frequency Analysis (TFA). The update is free of charge for all users running dB-Lab 212 or QC7.

Happy 36th Anniversary Voice Coil! The November 2022 issue of Voice Coil once again celebrates the launch of this periodical as an information resource for the loudspeaker industry. Also, this month, Mike Klasco writes about technologies and solutions to enhance low-frequency performance, and James Croft reviews a recent patent awarded to Panasonic for a loudspeaker arrangement for a Near to the Ear Subwoofer in a car seat. For this month's Test Bench, Vance Dickason characterizes the 6CXN36 coaxial 6.5” pro sound driver from B&C Speakers, and Wavecor’s FR4X-6WA01 compact oval full-range driver. Now available in print, digital and online.

What more could speaker system designers want? How about not just to protect the speaker from overload, but enable the speaker to play louder with reduced bass distortion? Mike Klasco writes about his experience working with Nuvoton smart amps with integrated Klippel Controlled Sound (KCS) technology. Now in mass production and offering new possibilities for speaker design. First product examples are now available in the market.

As an established provider of adaptive audio processing technologies to the consumer electronics industry and the recipient of a Technical GRAMMY Award, Waves Audio frequently powers all classes of audio products and its MaxxAudio logo can be found in TVs and even laptops. Now, Skyworth TV, the television manufacturer has teamed up with Waves to incorporate Waves MaxxAudio sound enhancement technology in the new Skyworth S100 Soundbar.

In Voice Coil September 2021, Vance Dickason writes about DSP crossovers from Danville Signal, Joe Hayes (Vastigo) writes about the DaS AuReality patented 3D loudspeaker technology, and Mike Klasco finds speaker-related technologies that help support smart speaker design efforts. This edition's Test Bench characterizes three new 25mm high-frequency tweeters from BlieSMa, using silk, beryllium, and diamond domes: BlieSMa’s T25S-6, T25B-6, and T25D-6.

audioXpress September 2021 celebrates its Speaker Builder magazine origins, once again offering an expanded focus on loudspeaker building, design, and testing. Mike Klasco provides an update on Speaker Technology, Claus Futtrup and Jeff Candy discuss Parameter Estimation and Box Simulation with Speakerbench, and Geoff Hill tells us the Tetrahedral Test Chamber Story. In this edition we pay tribute to Roger Russell (1935-2021) and we feature two great DIY projects. Now available online and in print.

Voice Coil October includes an updated directory of speaker-focused electronics, amps, and DSP vendors. And an insider's perspective about Nuvoton’s new smart amps, featuring Klippel's Controlled Sound (KCS) technology. This month's Acoustic Patents article discusses a Planar Loudspeaker Manifold patent granted to Dolby Laboratories, and Vance Dickason's Test Bench characterizes the latest Scan-Speak Ellipticor 21WE/4542T00 midrange, followed by the ODT29 fabric dome tweeter from Omega Audio. Now available online and in print!

Panasonic Corporation, based in Osaka, Japan, recently confirmed that it has completed the previously announced transfer of its semiconductor business to Nuvoton Technology Corporation, a Taiwan-based semiconductor company under the umbrella of Winbond Electronics Corporation group, following the receipt of regulatory approvals.