All items tagged with valves (151)

Book Review: How to Design and Specify Loudspeaker Drivers

April 10, 2019 by Richard Honeycutt

Book Review: How to Design and Specify Loudspeaker Drivers

Our longtime columnist Richard Honeycutt shares his insights on Geoff Hill’s recently released book, Loudspeaker Modelling and Design: A Practical Introduction, which demonstrates modern software and hardware being applied to the processes behind loudspeaker design and modeling. Learn more about this indispensable work, now available from publisher Routledge / Focal Press. This article was originally published in audioxpress, February 2019.

audioXpress May 2019 Glass Audio Special is Now Available!

April 9, 2019 by audioXpress Staff

audioXpress May 2019 Glass Audio Special is Now Available!

For audioXpress May 2019 -Glass Audio Special - we’ve put together a very strong edition, with some of best tube experts sharing a series of DIY projects for all skill levels, from restoration projects to new amplifiers, preamps, and headphone amps. We review the Nu:Tekt HA-K1 headphone amplifier using the novel Korg Nutube 6P1 device, and interview the founder of Parks Audio. We go deep on measuring voltage regulator ripple rejection and we even look at square-wave testing. All inside audioXpress May 2019!

R&D Stories: The Korg Nutube 6P1

February 13, 2019 by Pete Millett

R&D Stories: The Korg Nutube 6P1

This article provides an overview of the Korg Nutube 6P1, a new, miniature, low-power dual directly-heated triode device. It was developed by Korg (of musical instrument fame) and Noritake Itron, a manufacturer of vacuum fluorescent displays, in Japan. Although it is a true directly heated triode, it is manufactured differently than traditional vacuum tubes, which gives it some unique attributes. This article was originally published in audioXpress, May 2017.

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Lavoce WSF121.70G 12” Guitar Speaker Selected for New Orange Tremlord 30 Combo

January 24, 2019 by audioXpress Staff

Lavoce WSF121.70G 12” Guitar Speaker Selected for New Orange Tremlord 30 Combo

Transducer company Lavoce Italiana is kicking-off another edition of the NAMM Show with the announcement that iconic guitar amp brand Orange Amplifiers have selected the Lavoce WSF121.70G 12” guitar speaker for their most vintage guitar amplifier ever, the new TremLord 30 combo. Officially launching at NAMM 2019, and pitched by Orange as ‘The Amp We Never Made – Until Today’, the TremLord 30 is a 30W 1x12 all valve guitar combo, with built-in valve driven tremolo and reverb, engineered as a fifties inspired amp for the modern player.

New Hybrid Audio Amplifier from Dayton Audio Blends Tube Tone with Class D Power and Bluetooth

January 15, 2019 by audioXpress Staff

New Hybrid Audio Amplifier from Dayton Audio Blends Tube Tone with Class D Power and Bluetooth

Dayton Audio unveiled a new compact design that combines the efficiency and power of solid state class D amplifier topology with the warmth and character of a vacuum tube preamp section. The new Dayton Audio HTA20BT hybrid stereo tube amplifier combines a 12W per channel RMS design (into a 4 ohm load) with Bluetooth 4.2, Aux, and USB inputs, featuring a subwoofer output for adding an active subwoofer and a high quality headphone amplifier built-in. The results, the brand says, are sure to please even the most refined ears.

Audient Introduces Sono Amp Modeling Recording Interface with Tube Preamp Stage

January 11, 2019 by audioXpress Staff

Audient Introduces Sono Amp Modeling Recording Interface with Tube Preamp Stage

Audient has teamed up with leading cab simulation pioneers, twonotes audio engineering to present Sono, an audio interface with a tube guitar preamp stage for guitarists and musicians, featuring powerful modeling capabilities. The combination provides countless tonal options for guitarists, whether they're recording, practicing or playing live. The integrated DSP runs the modeling without latency, with external software only used to configure the multiple simulations.

How Good Is Your Port

January 9, 2019 by Bohdan Raczynski

How Good Is Your Port

Ported enclosures are known to extend the low-frequency output of loudspeakers by exploiting the Helmholtz resonator effect produced by the compliance of the air inside the enclosure and inertance of the air in the port. This article looks at the problem of port nonlinearity to determine the correct port size, and the acoustic impedance of the port under high air velocity. This article was originally published in audioXpress, September 2001.

audioXpress December 2018 Addresses Connected Audio Products and Voice Recognition

November 12, 2018 by audioXpress Staff

audioXpress December 2018 Addresses Connected Audio Products and Voice Recognition

For this last edition of 2018, audioXpress compiled a Voice Market Update that explores some of the latest developments and platforms for voice processing, with contributed articles from world-renowned experts in voice. The December 2018 edition reviews the ZOTL Ultralinear Power Amplifier from Linear Tube Audio; explains how to explore Soviet Germanium Transistors; and measures new SMT Low-Voltage JFETs. This is an edition you don't want to miss.

Consumer Technology Association Announces CES 2019 Best of Innovation Awards Honorees

November 12, 2018 by Joao Martins

Consumer Technology Association Announces CES 2019 Best of Innovation Awards Honorees

The CES Innovation Awards is an annual competition honoring outstanding design and engineering in consumer technology products. As in previous years, the Consumer Technology Association (CTA) announced the CES 2019 Innovation Honorees, including those products recognized as Best of Innovation Honorees, during the annual CES Unveiled event in New York. This year's nominees have a strong focus on sustainable and eco-friendly concepts. Audio products highlighted in the Innovation Awards include many surprises, including a Best of Innovation tube amplifier!

VANA LTD Brings Handmade E.A.T Vacuum Tubes to North American Market

October 19, 2018 by audioXpress Staff

VANA LTD Brings Handmade E.A.T Vacuum Tubes to North American Market

VANA, Ltd. is now the North American distributor for European Audio Team’s (E.A.T.) line of vacuum tubes made in the Czech Republic. E.A.T. is dedicated to hand making the finest 300B and KT88 tubes tested on custom made instruments to meet the highest standards. E.A.T. Vacuum Tubes are painstakingly handcrafted within a former Tesla factory in the Czech Republic, under the supervision of Jozefina Lichtenegger and using the manufacturing equipment previously in the Tesla Vrsovice factory.

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