In audio design, we all "stand on the shoulders of giants". Some of them I had the privilege to interview. But there are many, many people who do interesting things in audio and document their adventures on their websites. And oh yes, the * indicates they have written for Linear Audio.
John Broskie's place for anything tube: www.tubecad.com
Stuart Yaniger*'s place, who's interests are very much my own. And he writes a mean book review for Linear Audio: http://www.syclotron.com/
Bob Cordell*, who earned his stripes in both amplifier design as well as speaker design and special-purpose test equipment design: www.cordellaudio.com
Douglas Self* who documents not only his own audio adventures but also many articles and developments by others; this is a very extensive audio tech history repository: http://www.douglas-self.com/
Rod Elliott also has done many different things in audio, and has a knack of explaining things very clearly and succinctly: http://sound.westhost.com/
Nelson Pass*, a man who really made it in audio yet never lost the 'teenager wonder' (his own words) for audio, has a separate site for audio do-it-yourself: http://www.passdiy.com/
Then of course, the world's largest, most varied and sometimes overwhelming: www.diyaudio.com - every subject, every level, facts and figures and plain bullshit - in other words, just like the real world!
Siegfried Linkwitz wrote to KEF in 1974(!): "This will be the end of my involvement in speaker design" - yeah sure! Championing dipolar speakers with controlled directivety and thus controlled reflections. Worth a browse.
A very prolofic designer who produces a constant stream of unusual but very useful pieces of audio equipment and test equipment: Pete Millet's audio pages also has lots of tube data sheets and assorted facts and figures, and is a gateway to info on books and transformers.
Finally, if you're even a bit like me, you've probably be in a situation at one time or another that you really think you've discovered something New and a Breakthrough. I've been wrong everytime, but maybe you do better. To save you a lot of time, money and aggravation, read The Alternative-Science Respectability Checklist! Really. Do it.