Supplementary Material
All the supplementary material mentioned in published audioXpress and Voice Coil articles is made available in this page.
All items tagged with tubes (123)
March 27, 2017
Hernon Manufacturing Releases New Dual Turntable Precision Dispensing System
Hernon Manufacturing, a manufacturer of high-performance adhesives, sealants and the associated dispensing and curing equipment—has announced the release of a new product. The Autobonder 2512 replaces the 2511, a previous version of turntable dispenser, and now offers independently operating turntables and streamlined controls via a touchscreen Human Machine Interface (HMI).
March 17, 2017
Let The Music Play! High End 2017 Will be the Largest and Most Vibrant Ever!
The High End show is the world's foremost meeting place for the high-end audio industry, including emerging consumer audio technologies and personal audio. From 18 to 21 May 2017 the world’s biggest audio fair will open its doors at the MOC site in Munich. The High End is indisputably the number one international meeting point for audio enthusiasts and has been an institution for many years. This year will be the 36th edition in fact.
March 4, 2017
Errata, Corrections, & Updates
When necessary, audioXpress and Voice Coil staff posts notes pertaining to errata, corrections, and updates on this page.
February 15, 2017
The 2A3 Tube Amplifier - A Tribute to Simplicity and Warm Sound
"There is nothing quite like a quality tube amplifier," states the author in the introduction to this directly heated triode amplifier project. The idea for the amplifier started from the author's discovery of the Loftin-White circuit. The author chose the 2A3 directly heated triode power tube to implement the Loftin-White circuit. The 2A3 vacuum tube is a power triode capable of outputting 3.5 W in a single-ended Class A configuration. This article was originally published in audioXpress, August 2013.
February 13, 2017
audioXpress March 2017, Focus on Test and Measurement, Now Available!
A long-standing tradition, audioXpress' Focus on Test and Measurement 2017 is now available. Start with a thorough review of Audio Precision’s new APx1701 Transducer Interface; explore the DIM-100 device for interfacing and measuring with sound cards; build an Audio Dummy Load; learn how to measure Harmonic Distortion and discover the effects of Community Noise and their measurements. And just how good TIDAL's streaming quality actually is? All that and more in audioXpress March 2017. Get your copy now.
January 4, 2017
Poddwatt Series II Stereo Integrated Valve Amplifier
This article focuses on the Poddwatt Series II stereo integrated valve amplifier, a project with roots that go back several years. The design continues to be relevant and to evolve. I call the basic design an “Oddwatt” because of its “odd” configuration, using two stages. This article was originally published in audioXpress, May 2013.
December 27, 2016
A Simple LED Bias Meter and Supply for the Dynaco ST70 and Other Tube Amplifiers
Recently, I got bitten by the nostalgia bug and picked up a pair of old factory-wired Dynaco ST70s in pretty nice condition. On one of the Dynaco ST70s, I installed a new 6GH8 driver board instead of dealing with the rare 7199 issue, and I designed a small (3” × 3”) PCB to combine the bias supply and added the LED bias-setting circuit. This article was originally published in audioXpress, April 2013.
December 14, 2016
Test Bench: Eminence Maverick Guitar Speaker
This Test Bench focuses on a new and extremely clever variable Bl 12″ diameter guitar speaker from Eminence — the 12″ Maverick, from the Eminence Patriot series, which uses their new FDM technology (Flux Density Modulation) to allow some really desirable distortion characteristics that have become the signature of blues and rock guitar playing. This article was originally published in Voice Coil, January 2011.
July 7, 2016
Audient Introduces New iD4 24-bit/96kHz Compact Audio Interface with DAW Control
It’s very questionable that anyone would still be on the market for another USB 2.0 compact audio recording interface, given the market saturation and the transition to faster and lower-latency USB 3, Thunderbolt or even Ethernet alternatives already in the market. British company Audient believes there is still a chance and released the iD4, a single-channel unit featuring the company’s Class-A mic pre technology and good quality AD/DA converters for just $199.