Glass Audio 1989 Issue 2 (of 2)

1989 Issue 2 (of 2) of Glass Audio - in PDF format

Experience the preservation and evolution of "hollow-state" technology with Volume 1, Number 2 of Glass Audio (1989). This issue provides essential projects for extending the life of your equipment and maximizing the performance of classic designs:

• Soft Start for Tubes – Protect your precious vacuum tubes from the "hard shock" of sudden power-on. Roy Mottram introduces a sophisticated two-stage turn-on circuit that ramps up filament voltage before engaging the high-voltage supply, effectively eliminating turn-on shock and significantly extending tube life,.
• Rejuvenating Dyna’s Mark IV – Give your classic Dynaco a performance boost without breaking the bank. Paul Becker shares simple, inexpensive modifications to allow the use of unmatched output tubes, eliminate the need for expensive 5AR4 rectifiers, and provide regulated power for the driver stage,.
• Looking At Vacuum Tube Rectifiers – Discover why many audiophiles still prefer the "slow" turn-on of a tube rectifier over modern silicon. John McFadden explores how the internal resistance and transient response of tube rectifiers define the sonic character of high-end power supplies,.
• Extending Tube Life – Learn the secret to making your tubes last for years. Charles King investigates the critical relationship between filament voltage and longevity, demonstrating how running heaters slightly below nominal voltage can dramatically increase lifespan without sacrificing performance,.
• Transformer Hunting – Turn your local flea market into a high-end parts warehouse. Audio legend Norman Crowhurst provides an essential guide to identifying, testing, and scoring vintage transformers for pennies on the dollar, helping you find "gold" in the scrap metal pile,.
• Kit Report: Five Dynaco ST-70 Mods – Take the guesswork out of your next upgrade with this massive comparison test. Roy Mottram evaluates five major modification kits—including designs from Curcio, Sutherland, and VTA—measuring their technical performance and subjective sound quality to find the best value for your dollar,.
• Valve Views – Join Ken Kessler for a global survey of the tube renaissance. From the latest "miniature" high-end integrated amps in France to the rising tide of new hardware in the UK, stay informed on the international scene,.

CONTENTS

Volume 1 Number 2 (1989)

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