Audio Amateur 1/1978 PDF
Audio Amateur 1/1978 PDF - Issue is in black & white
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The first issue of 1978 for The Audio Amateur kicks off a year of high-performance engineering and refined craftsmanship. Here are the highlights of this issue:
- Showcase: Pandora's Box: Peer into the workshop of Alan Watling as he demonstrates a beautiful, modular "Hi-Fi test bed." This project showcases meticulous workmanship and provides a flexible platform for evaluating four channels of control, including preamps, tone controls, and filters.
- The Jung-White PAT-5 Modification: Audio legends Walt Jung and Dave White present a "herculean" update to the popular Dynaco PAT-5. This extensive modification replaces the original circuitry with state-of-the-art RIAA cards and a regulated power supply to strip away sonic "fog" and achieve professional-level performance.
- Hospital Radio: Audio for the Ailing: Reg Williamson explores the technical and social rewards of volunteer audio engineering. Learn about the unique challenges of building and maintaining a broadcasting network for hospitals, including line equalization and interface designs.
- Improving the Dyna Mark III Power Supply: Give your classic tube amp a modern edge. James Boak details a solid-state regulation modification for the Dynaco Mark III, designed to improve bias stability and reduce hum for a cleaner, more reliable output.
- Component Interfaces: Phono Cartridges: B. J. Webb begins an essential series on the critical relationship between the phono cartridge and the preamplifier. Discover how load resistance and capacitance affect frequency response and how to optimize your setup for musical neutrality.
- Kit Report: Heath’s IG-1272 Oscillator: Is this low-distortion audio oscillator the right addition to your workbench? This in-depth report evaluates the assembly process and performance of Heath’s latest test instrument, testing its limits for precision audio measurements.
- Editorial: The Digital Age is Here: Editor Edward T. Dell, Jr. reports from the 1977 AES convention, reflecting on the arrival of digital recording technology and how the pursuit of "good stuff" in audio mirrors the uncompromising quality of a local ice cream legend.
- Classic Circuitry: The Marantz Model 5: Study the engineering of a vintage masterpiece. This issue includes the complete schematic for the Marantz Model 5 power amplifier, a valuable reference for restorers and tube enthusiasts alike.
Table of Contents
- Editorials: The Digital Age and Ice Cream ......................................................................... 3
- Pandora's Box: by Alan Watling .......................................................................................... 4
- Modifying the PAT-5: by Walt Jung and Dave White ........................................................ 7
- Hospital Radio: Audio for the ailing: by Reg Williamson ................................................ 23
- Improving the Dyna Mark III Power Supply: by James E. Boak ..................................... 32
- Component Interfaces: Part I Phono cartridges: by B. J. Webb .................................... 40
- Audio Aids: by readers Sommerwerck, Borden, Thompson and Trumbull ................... 45
- Kit Report: Heath's IG-1272 Low Distortion Audio Oscillator by Walt Morrey ........... 50
- Books: Reviews by Richard Kunc, David Vorhis, Walt Jung, and R. H. Miller ............. 54
- Classic Circuitry: The Marantz Model 5 ........................................................................... 62
- CORRECTIONS ................................................................................................................. 63, 71
- LETTERS ................................................................................................................................... 49
- BROWSING .............................................................................................................................. 71
- CLASSIFIED ............................................................................................................................. 72
- ADVERTISING INDEX ........................................................................................................... 78