Black Widow Audio - DIY Audio site that includes datasheets, articles and a wide variety of projects.
Boozhound Laboratories - DIY site specializing in tube audio, vintage style guitar amps, mad science and all around DIY hooliganism.
Chris VenHaus Homepage - DIY resource for Audiophiles. Includes recipes for Cat5 speaker cable, fine silver interconnects, and power cords.
CoolTune Audio Projects - Marco Rutz shares his experiences and projects in design, acoustics and recording. Personal observations, current and past projects, photo gallery, and high-end systems are showcased.
Decibel Dungeon - Beginners guide offers an introduction to DIY hi-fi. Includes articles on building, modifying and buying components.
DIY Audio Projects - A wide collection of DIY Audio Projects that range from chip amplifiers to speakers to tube pre-amplifiers.
DIY Hi-Fi Forum - A web community (message forum) for the discussion of DIY Audio.
diyAudio.com - Web community (forum) for the discussion of DIY audio.
Elliott Sound Products - Information for audio DIY hobbyists. Articles, construction projects, links, sources.
Fun With Tubes - Fun with Tubes has a wealth of information related to vacuum tube circuits and techniques.
Leon's Audio Page - Showcases the author's build of tube amplifiers, pre-amplifiers and restorations of tube radios.
nMine.com Developments: Multi-amplification DIY Project. - Description and photos of multi-amp PCB with three integrated amplifiers each PCB and 24 dB/Octave Linkwitz-Riley Electronic filters. Configurable as a bi-amp or tri-amp.
Pass Do-It-Yourself - Projects by Nelson Pass including amplifiers, preamps and loudspeakers. Site offers information on circuit boards, FAQs and how to articles.
Promitheus DIY Audio site - Includes projects and articles about amplifiers, preamplifiers, speakers and cables.
Wade's Audio And Tube Page - Discussion of vacuum tube audio amplifiers and high fidelity equipment with photos and schematic diagrams.
XO - An Excel Crossover Design Tool - Passive 2-way crossover spreadsheet design tool. Models allow complex speaker impedance, acoustic target shapes, series or parallel designs, and impedance compensation circuits.
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