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audioXpress September 2010

• Mustang Speaker for Computer and Compact Systems
• A Large and Low Horn Speaker
• Active Crossover and Sub for Audio System
• A Sub Makeover
• Plus
  - Bonus articles for digital subscribers
  
  
  
  
  
  

Voice Coil September 2010

• Industry News and Developments
  
• Test Bench: Peerless Subwoofer and Wavecor Midbass
• Acoustic Patents
  
• Industry Watch
  
• Plus
  - Bonus articles for digital subscribers
  

Multi Media Manufacturer Digital July - August 2010

• We Visit Aalt-Jouk van den Hul
• Keep It Clean
• Plus
  - Barry Fox’s Media Report:
    Try, Try Again
  - New Chips on the Block
  
  Visit Multimediamanufacturer.com
  
  
  
  
  

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audioxpress REVIEW

Emotiva XPA-2 Power Amplifier

By Tom Lyle

I’ve been involved with audio for quite some time, and I’m having quite a bit of trouble recalling a power amplifier that has this much power. The Emotiva XPA-2 two-channel power amplifier’s specified output is 250W per channel into 4Ω, 500W per channel into 8, and its power doubles when used in bridged mode. It costs $799...

READ MORE   Go to reviews

 

AMPLIFIER RECALL

The U.S. Consumer Product Safety Commission has issued a recall of Krell Industries amplifiers due to a fire hazard. These power amps—model numbers KAVC-250a, KAV-250a/3, KAV-500I, and KAV-1500—were designed to operate at a temperature warm to the touch. However, a component input device can fail and cause the amplifiers to overheat, posing burn and fire hazards to consumers. Consumers should immediately stop using these amps and contact Krell (888-436-6055) to schedule the free installation of replacement fuses. Krell has received 50 reports of the amplifiers overheating, including reports of smoke and electrical fire. No injuries have been reported.

 

J. GORDON HOLT, 1930—2009

I met Gordon (he insisted on being called Gordon; to this day I don’t know what the J. stood for) in 1955. He drove from Philadephia to The Publishing House in Great Barrington, Mass., home of High Fidelity Magazine, for a job interview. He had a fresh degree in journalism and boundless enthusiasm, as well as a keen interest in and knowledge of tape recording. He was hired as a Contributing Editor for the new magazine then being planned, Audiocraft. From the first issue until the end of the magazine’s life, Gordon contributed to it in a major way, not only with his monthly column on tape recording but also with delightfully drawn cartoons sprinkled throughout the pages and with helpful inputs on general editorial matters.

Gordon was a socially active member of our small group. A frequent visitor to my home, he loved teasing my wife’s Siamese cat, often leaving with fresh arm scratches. He learned to like the martinis served at our Friday afternoon editorial lunches. I spoke with him not long ago and asked what his current recipe was. The answer was the same as ever: Five parts Tanqueray gin, one part Noilly Prat dry vermouth.

Not long after Audiocraft folded, we both left—I to work with Edgar Villchur at Acoustic Research, Gordon to found, write, and publish Stereophile Magazine. It was a long struggle for him but he persevered and eventually made it a successful enterprise. During those years we respectfully disagreed on many things, but always remained friends. I am one of the great many who will miss him.—Roy Allison.

 

Reginald Williamson 1925—2009

Audio Amateur’s very first contributing author passed away quietly in his sleep this past June after a yearlong battle with cancer. He was not only a fine engineer and author, but over the years became a great personal friend. He made many influential friends over his lifetime and performed the painful duty of reporting the passing of most of them. These included Peter Walker, famous for his Quad line of preamps and power amplifiers, but more so for his Electrostatic loudspeakers; and Peter Baxandall, designer of the Baxandall tone control topology, as well as superior test equipment. Not so well known was another fellow British Telcom engineer, Alan Watling, who converted Reggie’s designs into working hardware.

Most Britons who have a special interest manage to make the knowledge useful in some way which benefits society. Reggie’s love for music took him into positions of leadership and responsibility for music societies such as the one honoring Elgar, or a local Norwich audio club which built a wired-wireless radio facility for entertaining patients in a local hospital.

Reggie was a popular, highly demanding teacher in local community and university colleges. His standards were high but practical as well. He understood the art of the possible and was very good at what he thought were obvious improvements in the designs of others. His simple upgrades to Heath’s IG-18 audio generator became one of his most popular and widely used articles in early Audio Amateur issues. He was one of the first of many British authors giving permission for their articles to be reprinted in the pages of our magazines. He opened doors to his wide range of technical friends who enriched many of our publications over decades.

He leaves behind a son by his first marriage and his most enthusiastic and supportive wife Marjorie who relays one of Reggie’s characteristic quotes, “On the day I refuse my glass of red wine, call the undertaker.” We will all miss our lively, roisterous and beloved friend.—ETD

CORRECTION

More-legible figures for the published article T-reg: a High-Voltage Regulator for Tube Amps are available on the author’s website: www.linearaudio.nl. The figures as published in the magazine (April ’09, p. 24) are correct.—Eds.

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