Glass Audio 1997 Issue 6 (of 6)

1997 Issue 6 (of 6) of Glass Audio - in PDF format

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Discover the secrets to superior tube selection and professional-grade restoration with Volume 9, Number 6 of Glass Audio (1997). This issue concludes the year with essential surveys and high-performance projects for the serious vacuum tube designer:

• Audio Preamp Tubes: A Survey – Cut through the marketing hype and "self-appointed expert" opinions with Eric Barbour's candid survey. Drawing on over 20 years of experience, Barbour reveals why popular choices like the 12AX7 might be "mushy" and provides a definitive list of "best bets"—including hidden gems from the world of vintage television—to help you achieve the ultimate audio performance.
• Electrolytic Capacitor Reforming Unit – Give your vintage components a "Lazarus project" second life. Charles Hansen provides a complete guide to building a device that safely restores aluminum electrolytic capacitors from surplus or long-dormant equipment, doubling as a current-limited high-voltage DC power supply for your test bench.
• SE Amp Output Impedance Revisited – Master the "puzzling" bass performance of single-ended amplifiers. Eduardo de Lima uses Thiele/Small theory and complex acoustical modeling to show how you can actually turn high output impedance to your advantage, achieving greater efficiency and a remarkably open midrange.
• The Search for Linearity, Part 3 – Mark Kelly concludes his ambitious series by delivering the complete preamp and power amplifier circuits for his active-load triode design. Explore a high-power topology designed from the ground up to achieve 100dB signal levels with "spooky" clarity and organic integrity.
• Kit Report: The S.E.X. Kit – Discover why André Jute calls Daniel Schmalle's Single-Ended Experimenter’s kit a "breakthrough" for the budget-conscious audiophile. This thorough review explores how a clever design using mass-produced parts delivers riveting sound and provides the perfect "test mule" for your own future modifications.
• Book Report: Beginner’s Guide to Tube Audio Design – Scott Frankland reviews Bruce Rozenblit's essential text, describing it as a "DIY breakthrough". Whether you are a novice or an experienced designer, this book offers a systematic distillation of experience, helping you find your own "recipe for success" in tube circuit design.

CONTENTS

Volume 9 Number 6 (1997)

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