AUDIOXPRESS NOVEMBER 2011 PDF

November 27, by Kirk Elliott. Glass Audio Vault: The Remaking of a Champ. Introduced in , the Fender Champ single-ended 5 W guitar amplifier is. November 26, by audioXpress Staff November 4, by Charlie Hughes This article was originally published in Voice Coil November In November , audioXpress received a facelift. Glass Audio, Speaker Builder, and in , audioXpress, which he edited until

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November 11, by Michael Rothacher. This article was originally published in Voice Coil, November November 27, by Kirk Elliott.

This article was originally published in audioXpress, September This article first appeared in the Japanese magazine Radio Technology, December He wanted a versatile preamplifier that would work well in a variety of situations, and which could fit conveniently in a suitcase. When we connect audio components, interference may occur from various power and signal grounds. Features include a 29 mm wide surround beryllium diaphragm sourced from Materion, a non-reflective cast-aluminum audioxprwss cavity, a two-part audioxpresd 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, December Each file has two main pages: This is not surprising. Erno Borbely shares with us his all-FET audio amplifier design.

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Now we make available online with updated references and links. I measured the response and it was not especially flat. This article was originally published in Voice Coil, March The Mighty Mouse is indeed a good sounding and inexpensive novembeer that is also a good introduction to tube amplification.

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Features for the HF 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 Audio Voice Newsletter. 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.

He answers the problem by addressing the three main issues of crossover frequencies, relative output level and delay.

Magnitude response of individual simulated loudspeakers. The Audio Voice Newsletter. October 4, by Vance Dickason.

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This article was originally published in audioXpress, June My focus here is on compensating for phase nonlinearities in the driver. That’s what you normally get with a quality design, but to achieve it, the author shares the complete concept, power nlvember, circuit topology, construction and testing of this single-ended amp An ideal project for the DIY enthusiasts.

The high voltage supply works by creating a square wave with a timer.

The task of adding a subwoofer to a loudspeaker system to increase the low-frequency bandwidth should typically entail three primary items: September 21, by Vance Aidioxpress. October 12, by George Ntanavaras. This article was originally published in audioXpress, May All items tagged with audioXpress archive This article was originally published in Voice Coil, April As Dickason reminds us, this new subwoofer is part of the brand’s rather extensive line of subwoofers — ranging in size from 2.

Magnitude response of individual passbands and the summed response with the cluster delayed 7.

The horn is a new audioxpdess rather innovative design. Bruce Brown explains his successful nocember of rebuilding a 2011 W-7 tube amplifier from Heathkit. The spreadsheets are in standard Excel format, and should work in just about any spreadsheet program. The output of this op-amp is back-fed into the secondary of an audio output transformer, generating high voltage AC V at 40 kHz. July 12, by Vance Dickason Test Bench: A great tube-based amplifier for phono and line sources, featuring a very subtle bass enhancement control using negative feedback to enhance only selected frequencies, below Hz.

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Each product in this line incorporates proprietary stamped steel frame with a thin mounting lip that enables front mounting without insetting the driver surface mountedhigh relative XMAX, with paper cones for the DS series and aluminum cones for the DSA series.

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February 7, by Paul J. October 26, by Vance Dickason. Stamler A Power Supply Spreadsheet This article describes a spreadsheet program for designing low-voltage power supplies using common IC three-terminal regulators.

Group delay of the cluster red and subwoofer blue with crossover filters in place. August 20, by Jenoe Keceli. This article illustrates the problem for the midrange driver in a three-way system, which will be crossed over to a woofer on the low end and a tweeter on the high-end. This article was originally published in audioXpress, April June 28, by Vance Dickason Test Bench: Read this reference article, originally published in audioXpress, September Each product in this line incorporates proprietary stamped steel frame with a thin mounting lip that enables front mounting without insetting the driver surface mountedhigh relative XMAX, with paper cones for the DS series and aluminum cones for the DSA series.

The entire system runs on 8 AA batteries and should operate for approximately 4 hours continuously.