Test Bench: Scan-Speak 28W/4878T00 10" Subwoofer

In this Test Bench, I examined the 28W/4878T00, a new 10” (28 cm) subwoofer from high-end OEM Danish driver manufacturer Scan- Speak. Scan-Speak’s 28W/4878T00 has a well-chosen feature set that includes a proprietary cast seven-spoke cast-aluminum frame that has minimal reflection surfaces and is completely open below the spider mounting shelf. Other features include a stiff, lightweight paper sandwich cone—further stiffened by a 3.25” convex coated woven fiber dust cap. This article was originally published in Voice Coil, September 2017.

In this review, Oliver A. Masciarotte shares his experience with the surprising SB Acoustics Rinjani and Ara speaker kits, which feature the high-end Satori TW29R Tweeter, the MW16P-4, and the MW16P-8 midwoofers from the brand. Masciarotte had the opportunity to live for some weeks with these exquisite Rinjani speakers - a name inspired by the famous volcano mountain in Lombok, Indonesia, a place of immense natural beauty. This article was originally published in audioXpress, September 2017.

An article detailing the vast experience in this field by one of the leading designers and manufacturers of measurement microphones, PCB Piezotronics. The article looks at the frequency response of a measurement microphone, general acoustic calibration, and the benefits and challenges of free-field calibration, and pressure calibration, among other approaches. The article was originally published in Voice Coil, September 2017.

Part of audioXpress Speaker Focus edition in September 2017, this article by Don Keele, Jr. reminds us of how things evolved in speaker design, revisiting a subwoofer project that uses an Electro-Voice 30W 30" woofer from 1975! In "True Bass in a Large Space," Keele writes, "Getting true bass in a small place is quite easy and straightforward today, but back in 1975, it was not!"

audioXpress September 217 featured a review of the RME ADI-2 Pro by Bennett Prescott and Stuart Yaniger. The sensational RME ADI-2 Pro Bi-Directional Converter with Dual Headphone Amps is a feature-packed update to the original RME ADI-2, providing incredibly precise audio quality and a host of innovative features that will appeal to both mastering engineers and high-end audio aficionados alike. For under $2,000 US,we get two powerful DSP engines and two powerful headphone amplifiers, plus the ability to work with PCM sample rates up to 768 kHz at 32 bits, and true native DSD support up to DSD256.

In the September 2017 edition of Voice Coil, read about the new Klippel Analyzer 3 (KA3), launched to coincide with the year the German company celebrates its 20th anniversary. Also, read about a surprising speaker design recently patented by Harman and learn about "Acoustic Methods of Microphone Calibration" from the experts at PCB Piezotronics. In Test Bench, there's a 3” midrange dome driver from Volt Loudspeakers and a new 10” subwoofer from Scan-Speak. Now available.

Our Speaker Focus edition offers a review of the two new SB Acoustics Speaker Kits, while Don Keele, Jr., reminds us of how things evolved, revisiting an EV 30W subwoofer project, and we interviewed Zoltán Bay, creator of the revolutionary Bay Radial Speaker! The September 2017 edition also features two great DIY projects: The Thinman Speaker by Ken Bird and a Hybrid Electrostatic Speaker with Tailored Dispersion by Charlie Mimbs.