Download the entire 16pp TERMINAL RADIO Recording and Hi-Fidelity Equipment catalog: DOWNLOAD: Terminal_Radio_1949_Catalog Products covered, with text, some specs, and…
Above, a recently completed piece. It is built on one of two identical NOS cabinets that I pulled from a…
The original Williamson hi-fi amplifier schematic as published in "Wireless World" magazine (UK) May 1947. The Williamson amplifier is…
*UPDATE NOV 2016: please read thru the comments section! In all likelihood, this is in fact an original Mirko Paneyko piece,…
This design project began with the goal of crafting an entire amplifier that echoed the form of a vacuum tube…
Download a four-page article from "Radio & Television News" 4/1956 regarding the Mullard 520 power amp: DOWNLOAD: Mullard_520_amp American industrial…
From some 1957 issues of "Radio and TV News," an electronic-serviceman's publication, comes this collection of American Hif-Fi home audio…
For my non-technical readers: a phono preamp is a device which does two basic things: 1) it equalizes the program…
Circuit for a simple bass/treble parametric equalizer that uses no inductors. Could be a useful piece. Not sure if 250k/500k…
Today we'll look at some of the more interesting audio-circuit plans and schematics from the first two years of Audio…