Do-It-Yourself

Boozhound Laboratories
DIY site specializing in tube audio, vintage style guitar amps, mad science and all around DIY hooliganism.
http://boozhoundlabs.com/

Chris VenHaus Homepage
DIY resource for Audiophiles. Includes recipes for Cat5 speaker cable, fine silver interconnects, and power cords.
http://www.venhaus1.com/

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.
http://home.datacomm.ch/cooltune/

Decibel Dungeon
Beginners guide offers an introduction to DIY hi-fi. Includes articles on building, modifying and buying components.
http://myweb.tiscali.co.uk/nuukspot/decdun/

DIY Audio Projects
A wide collection of DIY Audio Projects that range from chip amplifiers to speakers to tube pre-amplifiers.
http://diyaudioprojects.com

ESP Project Pages
Information for audio DIY audio hobbyists. Articles, construction projects, links, sources.
http://sound.westhost.com/projects.htm

Forum - DIY Hi-Fi
A web community (message forum) for the discussion of DIY Audio.
http://www.diyhifi.org/forums/

Forum - diyAudio.com
Very large Web community (forum) for the discussion of diy audio. Registration is required for full access.
http://diyaudio.com/forums/

Fun With Tubes
Information related to vacuum tube circuits and techniques.
http://funwithtubes.com/index.html

Gary's Vacuum Tube Page
Vacuum tubes for antique radios and tube audio gear.
http://www.the-planet.org/

Guitar Electronics Projects
DIY guitar site that features guitar tube amps, pedal building and related projects.
http://www.freewebs.com/amp_build/

Hi-Fi Blog for DIY Audiophiles
Regularly updated blog containing a lot of information about DIY Audio.
http://diyaudioprojects.blogspot.com/

Klaus Boening's Analog Audio Web Site
Describes a few tube amplifier projects including schematics and descriptions of the circuitry.
http://www.klaus-boening.de/

Leon's Audio Page
Showcases the author's build of tube amplifiers, pre-amplifiers and restorations of tube radios.
http://www.leonaudio.gr/

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.
http://www.nmine.com/multiamp.htm

Pass DIY: Projects
Projects by Nelson Pass including amplifiers, preamps and loudspeakers. Site offers information on circuit boards, FAQs and how to articles.
http://passdiy.com/default.html

Photo Gallery - DIY Audio Projects
A photographic gallery of DIY Audio Projects. The projects include are pictures of speakers, amplifiers, cables and more. Share photographs of your DIY Audio creations.
http://diyAudioProjects.com/Gallery/

Wade's Audio And Tube Page
Discussion of vacuum tube audio amplifiers and high fidelity equipment with photos and schematic diagrams.
http://www.angelfire.com/vt/audio/

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.
http://www.geocities.com/mghjch02/