Audio Amateur 4/1971 PDF

Audio Amateur 4/1971 PDF - Issue is in black & white Scan of printed copy, PDF download immediately upon purchase The final issue of 1971 (The Audio Amateur, Issue 4) concludes the magazine's second year with a philosophical call to arms for hobbyists and a focus on innovative quadraphonic decoding and antenna engineering. Here are the highlights to entice your inner audio craftsman: A Manifesto for Audio Amateurs: Stop apologizing for your "playing" with audio. The Editor provides a stirring defense of the audio avocation, celebrating the unique "moment of triumph" when a project is finished, the switch is flipped, and the test signal finally appears on the scope. The Quadpod C: The series on ambient sound concludes with this "utterly simple" version. Using a single IC and monophonic power amp, this design allows you to add two back channels of ambient sound to any stereo system for a minimum of effort and cost. Quadpod Variations: Discover how fellow builders are pushing the boundaries of quadraphonic sound. This article details reader-submitted modifications, including how to install a Quadpod directly into a Dynaco PAT-4 and an advanced version utilizing Sanken hybrid power modules for a high-performance rear-channel system. Hinge Your FM Farm: Stop risking your life on dangerous ladders to adjust your antenna. Learn how to build a hinged mast system that allows you to lower a massive antenna array to the ground for easy maintenance and tuning, ensuring your FM reception is always optimized. Kit Report: Prokit SM-6A Mixer: Does a $299 DIY kit really belong in a professional studio? Get the definitive bench test results on this six-channel stereo mixer, evaluating its performance, assembly challenges, and its suitability for serious location recording. Tips & Technique: Master the art of the workshop with reader-submitted ingenuity. This installment features a critical auto-shutoff modification for the Rabco ST-4 turntable and professional secrets for managing cables during complex on-location recording sessions. Tapeniques: Explore the creative potential of your tape deck. James Jobson shares techniques for "re-recording" and synthesizing audio, including a fascinating account of how to transform a mono TV broadcast into a rich, stereo-like experience. Learning to Use Transistors: Master the "heart" of solid-state engineering. Part 7 dives deep into the physics of the transistor, explaining the mechanics of p-n-p and n-p-n junctions, the critical science of biasing, and the mathematics of gain. Table of Contents A Manifesto for Audio Amateurs: by The Editor ................................................................ 3 The Quadpod C: by Edward T. Dell & Joshua I. Goldberg ............................................... 7 Quadpod Variations: by Gary Sturm and Arnold S. Berger ............................................. 9 Hinge Your FM Farm: by Damon Hill ............................................................................... 12 Kit Report: Prokit SM-6A Mixer ........................................................................................ 14 Tips & Technique: by readers Vorhis and Jobson ........................................................... 16 Tapeniques: by James K. Jobson ...................................................................................... 17 Learning to Use Transistors, Part 7: The Transistor: by C.N.G. Matthews ............. 19 Letters .................................................................................................................................... 21 Just Looking, thanks .......................................................................................................... 22 Classified ................................................................................................................................. 24