Audio Amateur 1/1971 PDF
Audio Amateur 1/1971 PDF - Issue is in black & white
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The first issue of 1971 (Volume II, Number 1) for The Audio Amateur kicks off the magazine's second year with a focus on sophisticated decoding, precision instrument modifications, and the foundational physics of solid-state sound. Here are the highlights to entice your inner audio engineer:
- The QUADPOD: Recover the hidden ambiance in your stereo recordings! This simple yet effective "4 x 2" decoder uses a clever three-transistor-per-channel arrangement to extract four channels of sound from standard sources, bringing the "three-dimensional miracle" of the concert hall into your listening room.
- The Greening of the IG-18: Transform your modest Heath sine/square generator into a laboratory-grade instrument. This definitive guide shows you how to slash distortion to a staggering 0.003% and achieve professional accuracy for a fraction of the cost of high-end gear.
- Controlling those Volts and Amperes: Achieve the ultimate in stable, clean power. Explore three sophisticated designs for regulated power supplies—including a specialized 60V unit for the Bailey amplifier—ensuring your system performs at its absolute peak.
- Learning to Use Transistors: Master the heart of modern electronics. This installment dives into the physics of the p-n junction, explaining exactly how current flows across semiconductor barriers and why these components are the indispensable "building blocks" of audio.
- What Makes a Recording Valuable?: Take a nostalgic journey through the history of sound. A veteran recordist reflects on the gear and the moments that make a recording truly priceless, from gold-plated button microphones to capturing legendary live performances.
- Tips & Technique: Unlock a treasure trove of DIY ingenuity. From a "hybrid Dyna" modification that rivals high-end boutique preamps to professional secrets for applying dry-transfer lettering to your custom equipment panels, these reader-submitted hacks are essential for any serious builder.
- Tapeniques: Preflight Checkup: Don't let a technical oversight ruin your next session. This comprehensive "pre-flight" checklist ensures your tape decks, microphones, and cables are primed and ready for action, so you can focus on the music instead of the hardware.
Table of Contents
- The QUADPOD: by E. T. Dell, Jr. and J. I. Goldberg .................................................... 3
- The Greening of the IG-18: by Reginald Williamson ................................................ 7
- Controlling those Volts and Amperes: by Paul Greene ............................................ 11
- Learning to Use Transistors—Part 4: by C. N. G. Matthews ................................... 16
- What Makes a Recording Valuable?: by Ernie Rawlings ........................................... 17
- Tips & Technique: by readers Greisel, Rossmassler, Coggins, and Douglas .......... 18
- Tapeniques: Preflight Checkup: by James K. Jobson ................................................ 20
- Letters from readers ........................................................................................................ 21
- Classified Ads .................................................................................................................... 22
- Just Looking, thanks ........................................................................................................ 23