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About Vance Dickason

Vance Dickason has been working as a professional in the loudspeaker industry since 1974. A contributing editor to Speaker Builder magazine (now audioXpress) since 1986, in November 1987 he became editor of Voice Coil, the monthly Periodical for the Loudspeaker Industry, today published by KCK Media Corp. His globally acclaimed book Loudspeaker Design Cookbook is now in its 8th Edition, published by KCK Media. A life member of the Audio Engineering Society, Vance received the 1995 AES Citation Award for his long term contribution to audio education, and the 2013 Beryllium Award, Lifetime achievement from ALMA (Associating of Loudspeaker Manufacturers and Acoustics, now ALTI Association). Since 2001, he also does business as Vance Dickason Consultancy based out of Portland, Oregon, working as an independent engineering consultant to loudspeaker manufacturers.

All items written by Vance Dickason

Test Bench: ETON 29HD2 Magnesium/Ceramic 28mm Dome Tweeter

November 11, 2017 by Vance Dickason

Test Bench: ETON 29HD2 Magnesium/Ceramic 28mm Dome Tweeter

These Test Bench samples came from Germany. From Eton I received the 29HD2, its neodymium motor tweeter, with a fairly rich feature set that includes an aluminum faceplate, a 28 mm diameter magnesium diaphragm with a ceramic coating on both sides protected by a cosmetically attractive grill/phase plug, and driven by an aluminum former wound with round copper-clad aluminum wire (CCAW). This article was originally published in Voice Coil, April 2017.

Test Bench: Accuton C30-6-358 High-End Tweeter

November 6, 2017 by Vance Dickason

Test Bench: Accuton C30-6-358 High-End Tweeter

The samples for this Test Bench came from respected German home/car audio OEM transducer manufacturer Accuton. I received the Accuton C30-6-358, its new “Cell Concept” neodymium motor ceramic diaphragm 30 mm tweeter. The Accuton C30-6-358 is an interesting tweeter for several reasons. The mounting system, which is part of the “Cell Concept,” is definitely unique, with its proprietary clapping mechanism. This article was originally published in Voice Coil, April 2017.

Celestion CDX1-1447 Compression Driver with H1-7050 “No Bell” Horn

November 1, 2017 by Vance Dickason

Celestion CDX1-1447 Compression Driver with H1-7050 “No Bell” Horn

This Test Bench is about Celestion's CDX1-1447 1” ferrite motor compression driver coupled with Celestion’s H1-7050 ‘No Bell’ 70° × 50° horn. Features for the CDX1-1447 include a one piece polyimide diaphragm and surround, with an exit (throat) diameter of 25.4 mm (1.0”). The horn is a new and rather innovative design. The H1-7050 “No Bell” is a cast-aluminum exponential flare-type horn with a 70° × 50° radiation pattern. This article was originally published in Voice Coil, March 2017.

Test Bench: FaitalPRO HF142 Compression Driver Coupled with LTH142 60°×50° Horn

October 26, 2017 by Vance Dickason

Test Bench: FaitalPRO HF142 Compression Driver Coupled with LTH142 60°×50° Horn

Test Bench of the HF142 1.4” neodymium motor compression driver with the LTH142 60° × 50° horn, from Italian pro sound OEM FaitalPRO. Features for the HF142 include a ketone polymer diaphragm, with proprietary perforated suspension for acoustic tuning and a Finite Element Analysis (FEA) modeled and optimized four-slot annular phase plug. The phase plug’s design and its coupling with the diaphragm uses Faital’s proprietary simulation / modeling software. This article was originally published in Voice Coil, March 2017.

The SB Acoustics Satori TW29BN Beryllium Dome Tweeter

October 11, 2017 by Vance Dickason

The SB Acoustics Satori TW29BN Beryllium Dome Tweeter

For this Test Bench, SB Acoustics sent its new high-end Satori line neodymium 29 mm beryllium dome tweeter, the TW29BN. Features include a 29 mm wide surround beryllium diaphragm sourced from Materion, a non-reflective cast-aluminum rear cavity, a two-part aluminum faceplate with integrated mechanical decoupling, dual balanced compression chambers, a high-saturation neodymium ring type motor magnet with a T-shaped pole and dual copper cap shorting rings. This article was originally published in Voice Coil, February 2017.

SB Acoustics Satori MR13P-4. A New Home Audio 5.25” Midrange Driver

October 4, 2017 by Vance Dickason

SB Acoustics Satori MR13P-4. A New Home Audio 5.25” Midrange Driver

The subject of this month’s explication is the SB Acoustics 5.25” MR13P-4 Satori midrange. As with the MR16P-4, the MR13P-4 is nominally a midrange version of the SB Acoustics MW13P-4 5.25” woofer, but with higher sensitivity and shorter Xmax. The MR13P-4 is built on a cosmetically attractive six-spoke frame that has a minimal reflective footprint behind the cone to reduce reflections and a completely open area beneath the spider mounting shelf for enhanced cooling— both highly desirable attributes. This article was originally published in Voice Coil, February 2017.

Visit the Klipsch Museum of Audio History - Support the Heritage Museum Association

September 25, 2017 by Vance Dickason

Visit the Klipsch Museum of Audio History - Support the Heritage Museum Association

The Klipsch Museum of Audio History is officially open since July 2017. Jim Hunter, who was Paul Klipsch’s number one engineer for many years, as well as the former Engineering Manager, and Manager of Engineering Operations at Klipsch, was tasked by the company to form the Klipsch Heritage Museum Association, Inc, upon recently retiring back to Hope, Arkansas. The Klipsch Museum of Audio History contains milestone Klipsch products, test equipment, audio source components, and even some early manufacturing equipment.

B&C Speakers 6MBX44 MBX Mid-Bass Woofer

September 21, 2017 by Vance Dickason

B&C Speakers 6MBX44 MBX Mid-Bass Woofer

This edition of Voice Coil Test Bench characterizes the 6.5” 6MBX44 driver, from Italian pro sound OEM, B&C Speakers. The new MBX series of pro sound mid-bass woofers is especially well suited for small two-way loudspeaker applications. Features for the 6MBX44 include a proprietary four twin spoke cast-aluminum frame, enhanced voice coil cooling, curvilinear waterproof paper cone and inverted paper dust cap, and a neodymium ring magnet. This article was published originally in Voice Coil, January 2017.

The MR16P-4 6.5” Satori Midrange from SB Acoustics

September 13, 2017 by Vance Dickason

The MR16P-4 6.5” Satori Midrange from SB Acoustics

The subject of this Test Bench is the recent SB Acoustics 6.5” MR16P-4 Satori midrange, which is nominally a midrange version of the SB Acoustics MW16R-4 (first reviewed in the November 2011 issue of Voice Coil) with higher sensitivity and shorter Xmax. The original Satori MW16R, while looking cosmetically similar to the Scan-Speak Illuminator 18WU series, was a well-designed driver that has established itself as a true high-end home audio competitor. This article was published originally in Voice Coil, January 2017.

New Driver Technology from Fibona Acoustics

September 6, 2017 by Vance Dickason

New Driver Technology from Fibona Acoustics

Fibona Acoustics, founded in 2015 and headquartered in Copenhagen, Denmark, has introduced a new patented driver technology Enclosure Magnet Coaxial Transducer (EMCT), developed by Milad Kahfizadeh, an industry veteran and the company's founder. The design has a shallow coaxial design of the diaphragm, a self-containing enclosure, and high sensitivity, with improved high frequency sound dispersion.

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