Audio Amateur 1/1970 PDF
Audio Amateur 1/1970 PDF - Issue is in black & white
Scan of printed copy, PDF download immediately upon purchase
Winter 1970 (Volume 1, Number 1)
The debut issue of The Audio Amateur marks the beginning of a new era for DIY enthusiasts, focusing on precision solid-state design and the restoration of classic gear. Here are the highlights to entice your inner audio craftsman:
- The Twin-twenty, Mark II: Build a sophisticated 20-watt power amplifier utilizing an all-silicon, fully complementary output stage. This design doesn't just deliver high-fidelity sound; it includes a sophisticated electronic overload protection circuit to save your speakers and transistors from accidental damage.
- Disc Pollution: How to Fight It: Stop letting "pops and crackles" ruin your listening experience. Audio legend Percy Wilson shares a "systematic approach" to deep-cleaning factory-sealed records and provides plans for a DIY washing machine that pulls grit out of the grooves.
- Improve your Dyna PAT-4: Transform the best-selling Dynaco preamplifier into a state-of-the-art performer. This definitive guide details how to replace noisy tone controls with precision switched resistors, optimize phono equalization, and add critical shielding to silence hum.
- Record Your Own Bomb Scare: Experience the thrill of location recording in the first of a new series. Learn how one amateur captured a historic mass in Assisi, Italy, navigating technical limitations and an actual bomb threat to preserve a priceless moment.
- Just Looking, Thanks...: Stop the endless search for specialized components. This curated guide connects you with expert merchants who offer everything from etched circuit boards for TAA projects to matched pairs of high-performance transistors.
Table of Contents
- The Twin-twenty, Mark II: by Reginald Williamson ................................................................ 2
- Disc Pollution: How to fight it: by Percy Wilson ................................................................ 12
- Improve your Dyna PAT-4: by the Editor ................................................................................ 14
- Record your own bomb scare: by T. C. Whitehouse ........................................................... 21
- Just looking, thanks...: by Amateur .......................................................................................... 23
- Letters ............................................................................................................................................. 21
- Coming Attractions ................................................................................................................... 22