Glass Audio 1994 Issue 2 (of 4)

1994 Issue 2 (of 4) of Glass Audio - in PDF format

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Step into the world of advanced "hollow-state" engineering and international audio trends with Volume 6, Number 2 of Glass Audio (1994). This issue features expert circuit analysis, classic restorations, and a comprehensive guide to the global tube market:

• Cascode Construction – Denzil Danner breaks down one of the most misunderstood circuit topologies. Learn how to optimize cascodes for highest-output-level power amp drivers or maximize gain for low-level stages, with detailed analysis of trade-offs and practical component selection.
• A New Dynaco PAS Upgrade – Transform your classic Dynaco into a modern high-end contender. Norman Koren delivers a "no-compromise" upgrade that focuses on reducing output impedance and improving square-wave response, ensuring your vintage gear rivals the best of today's audiophile equipment.
• Amending Brian Lowe’s Servo Bias System – Master the art of stable bias. Andrew Nehan introduces sophisticated modifications to the self-bias servo for output tubes, including a protective "soft-start" delay and a clever LED indicator system to help you diagnose tube health at a glance.
• Output Transformers, Part 1 – Gain a fundamental understanding of the critical link between your tubes and speakers. James Moir demystifies the matching process, explaining how transformers control frequency response and identifying the specific factors that introduce sonic distortion.
• Valve Views: The Global Tube Revolution – Join Ken Kessler for a whirlwind tour of the international tube scene. From the "tasty" high-end displays at the Las Vegas CES to the boutique hardware of the Festival du Son in Paris, discover the latest innovations shaping the future of audio.
• Editorial: Looking Backward & Forward – Reflect on the "archaeology of tube technology." Editor Edward T. Dell, Jr. explores the exciting synergy between classic vacuum tube circuits and modern solid-state enhancements, like regulators and timers, to achieve unprecedented audio precision.
• Ask GA: Tube Supplies Update – Stay informed on the ever-changing tube market. Eric Barbour provides a critical update on global factory closures and the availability of essential tubes like the EL34 and 6550, plus expert advice on troubleshooting vintage testers and preamps.
• Glass Shards: Circuit Innovations & Restoration – Explore the new "Cathanode Follower" for 100% voltage feedback and learn professional techniques for "re-forming" old electrolytic capacitors to give your vintage gear a second life.

CONTENTS

Volume 6, Number 2 (1994)

Note: Page numbers are based on the table of contents and article headers provided in the source.