Audio Amateur 3/1972 PDF

Audio Amateur 3/1972 PDF - Issue is in black & white Scan of printed copy, PDF download immediately upon purchase The Issue 3, 1972 edition of The Audio Amateur is a technical tour de force, featuring revolutionary amplifier concepts, DIY high-end speakers, and essential modifications for popular gear. Here are the highlights to entice your inner audio engineer: The Edwin A+B Amplifier: Discover a revolutionary "true Class-B" design that achieves negligible crossover distortion without the need for temperature stabilization or matched transistors. Improve your Heath AR-15 or AR-1500: Unlock the hidden potential of your Heath receiver with professional-grade modifications that fix "muddy" bass, improve signal-to-noise ratios, and refine the tuning meter for peak performance . An Electrostatic Speaker System (Part 1): Stop dreaming about electrostatic transparency and start building. Learn how to construct high-performance, full-range panels for a fraction of the cost of commercial units . Optimizing the Tiger 175-A: Give your "Universal Tiger" a performance boost with new protection circuits and improved square-wave response for cleaner transients and increased reliability. Tips & Technique: Master the art of the workshop with reader-submitted hacks for adding inputs to preamps, an "ethical" loudness control, and dramatically improving the audio quality of your TV set. Audio Fundamentals: The Mystery of Impedance: Reginald Williamson demystifies one of audio's most misunderstood topics, explaining the core principles of resistance and reactance while debunking the "myth" of impedance matching . Learning to Use Transistors (Part 10): Take control of your circuit designs by mastering h-parameters. Learn how to interpret manufacturer data sheets to design stable, high-performance small-signal amplifiers. Brahms Vindicated: Experience the thrill and technical challenge of recording a full choir and orchestra on amateur equipment in this inspiring and informative account. Table of Contents The Edwin A+B amplifier: by Piet Lambrechts ................................................................ 3 Improve your Heath AR-15 or AR-1500: by A. B. Krueger ............................................ 9 An Electrostatic Speaker System (Part 1): by David P. Hermeyer ............................. 11 Optimizing the Tiger 175-A: by Daniel Meyer ............................................................... 18 Tips & Technique: by readers Springer, Wade, Miner and Hazlehurst ........................ 22 Audio Fundamentals: Impedance: by Reginald Williamson .......................................... 27 Learning to Use Transistors: Part 10 (H-Parameters): by C.N.G. Matthews ............ 30 Letters ................................................................................................................................... 32 Brahms Vindicated (My Most Valuable Recording): by L. C. Landers ........................ 36 Just Looking ........................................................................................................................ 38 Classified ............................................................................................................................... 38