The 1976 issue 3 delivers precision testing tools, professional recording insights, and a deep dive into high-efficiency speaker design.
- A White Noise Generator and Pink Filter: Build an essential tool for testing room and loudspeaker response. A. John Petzold shows you how to construct a reliable, low-cost random noise generator with a specialized pink filter.
- A to Z Tape Recorder Set-up: Is your tape deck performing at its peak? Craig L. Stark begins a definitive series on optimizing your recorder, covering head cleaning, demagnetizing, and the critical tangency and azimuth alignments.
- Modifying the Rabco SL8E: Transform a good tonearm into a near-perfect one. Raymond Kilmanas details a thorough modification using lightweight aluminum tubing and a unipivot design to eliminate friction and tracking errors.
- Audio Mixers—Part 3: Go inside the "Prokit" for a close-up look at professional mixer architecture. This installment analyzes commercial signal paths to illustrate real-world applications for your DIY mixing projects.
- Design and Build a High-Efficiency Speaker System: Achieve stunning realism with a high-efficiency coaxial design. This deep dive covers the theory of sound pressure levels and provides step-by-step instructions for building enclosures for the Altec 604-8G.
- Kit Report: Aries 300 Synthesizer: Wrestle a massive 90-hour synthesizer kit into being. This extensive report evaluates the design, construction, and sonic capabilities of the Aries 300 modular system.
- Audio Aids: Discover practical ingenuity from readers, featuring a DIY cable identifier, a clever method for cleaning cassette tapes, and instructions for making professional-looking photo front panels.
- Classic Circuitry: Audio Research EC-3: Reference the engineering of a high-end electronic crossover with the detailed schematic for the Audio Research EC-3.
- Book Talk: Expand your technical library with a review of Don Lancaster's Active Filter Cookbook, an essential resource for anyone designing precision audio filters.
Table of Contents
- A White Noise Generator and Pink Filter: by A. John Petzold ................................... 3
- A to Z Tape recorder set-up—1: by Craig L. Stark ........................................................ 6
- Modifying the Rabco SL8E: by Raymond Kilmanas .................................................... 10
- Audio Mixers--Part 3: by Edward J. Gately, Jr. ............................................................. 13
- Design and build a high efficiency speaker system: by Robert and William Bowyer and Michael Lampton .......................................................................................................................... 17
- Kit Report: Aries 300 Synthesizer: by James Thoroman and Paul Taylor ............. 26
- Audio Aids: by readers W. Miller, C. L. Stark, T. Lathrop, D. Carlstrom and J. Stein ............................................................................................................................................ 32
- Classic Circuitry: Audio Research EC-3 Electronic crossover ................................... 35
- Book Talk: Guest review by Walt Jung .......................................................................... 38
- LETTERS ............................................................................................................................. 39
- CORRECTIONS .................................................................................................................. 39
- CLASSIFIED ......................................................................................................................... 43
- JUST LOOKING ................................................................................................................. 42
- AD INDEX ........................................................................................................................... 46