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The History and Legacy of Glass Audio Magazine


Glass Audio Magazine: A Treasure Trove for Tube Enthusiasts




If you are a fan of tube audio, you may have heard of Glass Audio magazine. This publication was dedicated to all things tube-related, from technical articles and projects to interviews and reviews. It was a source of inspiration and information for many tube lovers around the world. In this article, we will explore what Glass Audio magazine was, how it started, why it is valuable for tube enthusiasts, and how you can download PDF versions of it.




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What is Glass Audio Magazine?




Glass Audio magazine was a quarterly publication that focused on tube audio electronics. It covered topics such as tube theory, design, construction, testing, modification, restoration, history, and applications. It featured articles written by experts and hobbyists alike, as well as interviews with prominent figures in the tube audio field. It also included reviews of tube products and accessories, such as amplifiers, preamplifiers, speakers, headphones, cables, tubes, transformers, capacitors, resistors, sockets, chassis, knobs, switches, meters, tools, books, magazines, CDs, LPs, etc.


How Glass Audio Magazine Started




Glass Audio magazine was founded in 1989 by Ed Dell. He was the editor and publisher of audioXpress magazine (formerly The Audio Amateur), which was a general audio publication that covered both solid-state and tube audio. However, he noticed that there was a growing interest in tube audio among his readers. He decided to create a separate magazine that would cater exclusively to tube enthusiasts. He named it Glass Audio because tubes are also known as valves or glass bottles.


Glass Audio magazine was initially published as a supplement to audioXpress magazine. It had four issues per year, each with about 40 pages. The first issue came out in January 1989. The response from the readers was very positive. Many people subscribed to both magazines or switched from audioXpress to Glass Audio.


In 1995, Glass Audio magazine became an independent publication. It increased its page count to about 60 pages per issue. It also expanded its scope to include more topics related to tube audio. It continued to publish four issues per year until 2004.


In 2005, Glass Audio magazine merged with audioXpress magazine again. This time, it became a special section within audioXpress magazine. It had about 20 pages per issue. It maintained its identity and editorial style, but it shared the same cover and subscription with audioXpress magazine. It continued to publish four issues per year until 2010.


In 2011, Glass Audio magazine ceased publication. The last issue was May 2010. The reason for the closure was the decline in advertising revenue and the rise in printing and mailing costs. However, the legacy of Glass Audio magazine lives on. Many of its articles and projects are still available online or in print. Many of its readers and contributors are still active in the tube audio community. And many of its fans still cherish their old copies of the magazine.


Why Glass Audio Magazine is Valuable for Tube Lovers




Glass Audio magazine was a valuable resource for tube lovers for many reasons. Here are some of them:


Technical Articles and Projects




Glass Audio magazine had a wealth of technical articles and projects that covered various aspects of tube audio. Some of the topics included:


  • Tube basics: how tubes work, how to read tube data sheets, how to test tubes, how to bias tubes, how to match tubes, how to troubleshoot tubes, etc.



  • Tube circuits: how to design, build, modify, and optimize tube circuits, such as amplifiers, preamplifiers, phono stages, line stages, tone controls, equalizers, filters, crossovers, oscillators, modulators, demodulators, detectors, mixers, converters, etc.



  • Tube components: how to select, use, and improve tube components, such as transformers, capacitors, resistors, inductors, chokes, potentiometers, switches, relays, sockets, connectors, wires, cables, etc.



  • Tube applications: how to apply tube circuits to various audio devices and systems, such as speakers, headphones, microphones, turntables, CD players, DACs, radios, tuners, receivers, transmitters, tape recorders, reel-to-reel machines, cassette decks, DATs,



```html Tube sound: how to achieve, measure, and appreciate the distinctive sound quality of tubes, such as warmth, richness, smoothness, detail, dynamics, etc.




Glass Audio magazine had many technical articles and projects that showed how to create and enjoy the tube sound. Some of the examples included:


  • A tube buffer stage that can be added to any solid-state device to improve its sound quality.



  • A tube headphone amplifier that can drive any type of headphones with low distortion and high fidelity.



  • A tube phono preamplifier that can handle any type of cartridge with accurate RIAA equalization and low noise.



  • A tube line stage that can provide variable gain, volume control, source selection, and remote control.



  • A tube power amplifier that can deliver high power, low distortion, and wide bandwidth.



  • A tube speaker system that can reproduce the full frequency range with high efficiency and low distortion.



Interviews and Profiles




Glass Audio magazine had many interviews and profiles that featured some of the most influential and respected people in the tube audio field. Some of the names included:


  • Norman Crowhurst: a pioneer of tube audio engineering and education, who wrote many books and articles on tube theory and practice.



  • Herb Reichert: a legendary tube audio designer and reviewer, who created many innovative and popular tube products and circuits.



  • John Broskie: a prolific tube audio author and blogger, who shared his knowledge and insights on tube circuits and applications.



  • Menno van der Veen: a renowned tube audio researcher and educator, who developed many advanced and original tube concepts and techniques.



  • Lynn Olson: a visionary tube audio enthusiast and experimenter, who explored the boundaries of tube sound and performance.



  • Bruce Rozenblit: a successful tube audio entrepreneur and inventor, who founded Transcendent Sound and produced many award-winning tube products.



Reviews and Recommendations




Glass Audio magazine had many reviews and recommendations that evaluated some of the best tube products and accessories available in the market. Some of the categories included:


  • Tube amplifiers: from single-ended triodes to push-pull pentodes, from class A to class AB, from integrated to monoblocks.



  • Tube preamplifiers: from passive to active, from simple to complex, from line only to phono included.



  • Tube speakers: from full-range to multi-way, from horn-loaded to electrostatic, from conventional to exotic.



  • Tube headphones: from dynamic to planar magnetic, from open-back to closed-back, from over-ear to in-ear.



  • Tube accessories: from tubes to transformers, from capacitors to resistors, from cables to connectors, from chassis to knobs.



How to Download Glass Audio Magazine PDFs




If you are interested in reading Glass Audio magazine, you may wonder how you can download PDF versions of it. There are several ways to do so. Here are some of them:


Official Sources




The official sources of Glass Audio magazine PDFs are the websites of audioXpress magazine and its publisher Elektor International Media. You can access them by following these steps:


  • Go to https://audioxpress.com.



  • Click on the "Magazine" tab at the top menu bar.



  • Select "Back Issues" from the drop-down menu.



  • Scroll down to find the issues that have "Glass Audio" in their titles. They are usually published in May of each year.



  • Click on the issue that you want to download. You will be redirected to a page with more details about the issue.



  • Click on the "Add to Cart" button. You will be asked to log in or create an account if you haven't done so already.



  • Complete the checkout process. You will need to pay a fee for each issue that you want to download. The fee varies depending on your location and subscription status.



  • After you complete the payment, you will receive an email with a link to download your PDF file. You can also access your PDF file from your account page on the website.



Unofficial Sources




The unofficial sources of Glass Audio magazine PDFs are the websites of various online archives and libraries that have scanned and uploaded the magazine issues. You can access them by following these steps:


  • Go to a search engine of your choice, such as Google or Bing.



  • Type in "glass audio magazine pdf" or a similar query in the search box.



  • Browse through the results and look for the websites that have PDF files of Glass Audio magazine issues. Some of the examples are Archive.org, Scribd.com, Magzter.com, etc.



  • Click on the website that has the issue that you want to download. You will be redirected to a page with more details about the issue.



  • Click on the "Download" button or a similar option. You may need to sign up or log in to the website if you haven't done so already. You may also need to pay a fee or complete a survey to access the PDF file.



  • After you download the PDF file, you can open it with any PDF reader software or app.



Tips and Tricks




Here are some tips and tricks on how to download and enjoy Glass Audio magazine PDFs:


  • Be careful when downloading PDF files from unofficial sources. Some of them may contain viruses, malware, or spyware that can harm your computer or device. Make sure you have a reliable antivirus software installed and updated before downloading anything.



  • Be respectful of the intellectual property rights of Glass Audio magazine and its authors. Do not share, distribute, or sell the PDF files without their permission. Do not use the PDF files for any commercial or illegal purposes.



  • Be aware of the quality and completeness of the PDF files. Some of them may have low resolution, missing pages, or incorrect information. If possible, compare them with the original print versions or the official digital versions to verify their accuracy and authenticity.



  • Be creative and curious when reading Glass Audio magazine PDFs. You can learn a lot from them and apply them to your own tube audio projects and experiments. You can also contact the authors or the editors if you have any questions or feedback about their articles.



Conclusion




Glass Audio magazine was a treasure trove for tube enthusiasts. It provided a wealth of information and inspiration for tube audio lovers around the world. It covered topics such as tube theory, design, construction, testing, modification, restoration, history, and applications. It featured articles written by experts and hobbyists alike, as well as interviews with prominent figures in the tube audio field. It also included reviews of tube products and accessories, such as amplifiers, preamplifiers, speakers, headphones, cables, tubes, transformers, capacitors, resistors, sockets, chassis, knobs, switches, meters, tools, books, magazines, CDs, LPs, etc.


If you want to read Glass Audio magazine, you can download PDF versions of it from various sources. You can access the official sources from audioXpress magazine and its publisher Elektor International Media. You can also access the unofficial sources from various online archives and libraries that have scanned and uploaded the magazine issues. However, you should be careful when downloading PDF files from unofficial sources. Some of them may contain viruses, malware, or spyware that can harm your computer or device. You should also be respectful of the intellectual property rights of Glass Audio magazine and its authors. Do not share, distribute, or sell the PDF files without their permission. Do not use the PDF files for any commercial or illegal purposes.


Glass Audio magazine was a valuable resource for tube lovers for many reasons. It offered technical articles and projects that showed how to create and enjoy the tube sound. It had interviews and profiles that featured some of the most influential and respected people in the tube audio field. It had reviews and recommendations that evaluated some of the best tube products and accessories available in the market.


If you are a fan of tube audio, you should definitely check out Glass Audio magazine. You will find a lot of useful and interesting information and inspiration for your tube audio endeavors. You will also join a community of like-minded people who share your passion and enthusiasm for tubes.


FAQs




  • Q: How many issues of Glass Audio magazine were published?



  • A: Glass Audio magazine was published from 1989 to 2010. It had four issues per year. The total number of issues was 88.



  • Q: How can I subscribe to Glass Audio magazine?



```html can still access the back issues of the magazine from the official or unofficial sources as explained above.


  • Q: What are some of the best tube products and accessories that Glass Audio magazine reviewed or recommended?



  • A: Glass Audio magazine reviewed or recommended many tube products and accessories over the years. Some of the best ones according to the magazine's ratings and feedback were:



  • Western Electric 300B: a legendary directly heated power triode that delivers superb sound quality and reliability.



  • Audio Research SP-11: a reference tube preamplifier that combines high performance and versatility.



  • Quad ESL-63: an electrostatic speaker that reproduces natural and transparent sound with low distortion.



  • Sennheiser HD 600: an open-back dynamic headphone that offers balanced and detailed sound with high comfort.



  • Cardas Golden Cross: a high-end cable that uses pure copper litz conductors and Teflon insulation for optimal signal transfer.



  • Q: What are some of the most popular tube projects that Glass Audio magazine featured?



  • A: Glass Audio magazine featured many tube projects that appealed to different levels of skill and interest. Some of the most popular ones according to the magazine's popularity and feedback were:



  • Aikido: a tube line stage that uses a clever feedback scheme to cancel power supply noise and distortion.



  • ZOTL: a tube output transformerless amplifier that uses impedance conversion to drive low-impedance loads.



  • Ripper: a tube phono preamplifier that uses passive RIAA equalization and low-noise tubes for accurate vinyl playback.



  • SE-40: a single-ended pentode amplifier that uses EL34 tubes and ultra-linear connection for high power and low distortion.



  • Foreplay: a tube preamplifier kit that offers simplicity, affordability, and modifiability.



  • Q: Who are some of the most famous people that Glass Audio magazine interviewed or profiled?



  • A: Glass Audio magazine interviewed or profiled many famous people in the tube audio field. Some of them were:



  • William Z. Johnson: the founder and president of Audio Research Corporation, one of the leading manufacturers of high-end tube audio equipment.



  • David Hafler: the founder and chief engineer of Dynaco and Hafler, two of the most successful companies in tube audio history.



  • Tim de Paravicini: a renowned tube audio designer and consultant, who worked for Luxman, Quad, Musical Fidelity, EAR, etc.



  • Bruce Edgar: a pioneer of horn speaker design and construction, who created the famous Edgarhorn system.



  • Roger Modjeski: a brilliant tube audio engineer and inventor, who founded Music Reference and RAM Labs.



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