Audio Amateur 4/1970 PDF

Audio Amateur 3/1970 PDF - Issue is in black & white
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The final issue of 1970 (The Audio Amateur, Issue 4) concludes the magazine's inaugural year with a landmark focus on high-performance amplification and the debut of a modular mixer series. Here are the highlights to entice your inner audio craftsman:

• Design Decisions toward building Your Own Mixer: Tired of limitations? Start building your own modular audio mixer from scratch . Part I of this series dives into the fundamental logic of mixer design, explaining how to handle input signals, grouping, and the critical role of cable capacitance in maintaining signal integrity .
• The Bailey 30-30: Discover the secrets behind this "runaway best-seller" from England . This 30-watt stereo power amplifier features a fully complementary silicon output and unconditional stability, offering a refined sound that rivals the best tube units without the heat or bulk .
• Building a Bailey: Ready to heat up the soldering iron? This comprehensive construction guide provides everything you need to build your own Bailey amplifier, from etching custom circuit boards to selecting matched transistor pairs and managing heat dissipation for maximum reliability .
• A Dubbing Deck: Don't let your rare recordings gather dust. Learn how to repurpose a vintage tape transport into a high-performance playback deck using simple modifications and specialized preamps, perfect for high-quality tape-to-tape copying .
• Learning to Use Transistors: Master the atomic-level science of audio . This installment explores how "doping" silicon with aluminum or arsenic creates the holes and free electrons that allow semiconductors to function, providing the foundational knowledge for any serious designer .
• Putting a God on Tape: Experience the thrill of capturing nature’s most elusive sounds . Follow one recordist's spine-tingling journey to capture a massive thunderstorm on tape, resulting in a recording of startling dynamic range and "electrifying" detail .
• Tapeniques: Join the global community of "tapespondents" . This guide explores the "great pleasures" of exchanging tapes with fellow enthusiasts around the world and provides the essential rules of etiquette for international tape correspondence .
• Tips & Technique: Tap into the workshop wisdom of the TAA community . This issue features ingenious hacks for cleaning Janszen electrostatic speakers, professional metalworking tips for crafting custom chassis, and a fix for oxidized power supply terminals .

Table of Contents

• Design Decisions toward building Your Own Mixer: Part I: by Peter Levesley .................... 3
• Letters .......................................................................................................................................................... 6
• The Bailey 30-30: by Arthur R. Bailey ............................................................................................... 7
• Building a Bailey: by TAA Staff .......................................................................................................... 11
• A Dubbing Deck: by Amateur ............................................................................................................ 14
• Learning to Use Transistors, Part 3: by C. N. G. Matthews ..................................................... 16
• Putting a God on Tape: by Frank E. Johnson III .......................................................................... 17
• Tapeniques: by James K. Jobson ........................................................................................................ 18
• Tips & Technique: by readers Belastock, Greene and Douglas ................................................ 20
• Bookshelf: Schematic primer ............................................................................................................. 23
• Just looking, thanks ............................................................................................................................. 23
• Classified ................................................................................................................................................. 22