Loudspeakers
AccuPulse Loudspeaker, AcousticHobby, Bruce Osborn's DIY Loudspeakers, Build your own loudspeakers, Bullock and White Software, DecWare: How to Repair a Woofer, DIY 2001 Midwest Regional, DIY Speaker Building Information, How Stuff Works: How Speakers Work, Madisound Speaker Components
AudioClub
The site for audiophiles and/or fanatics.
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 to all matters relating to DIY hi-fi. Everything clearly explained with text and pictures.
DIY Hifi, Audio and ELectronics
Includes datasheets and reference articles on audio and headphone amplifiers, preamplifiers, head and phono amps.
Elliott Sound Products - The Audio Pages
Information for audio DIY hobbyists. Articles, construction projects, links, sources.
Gary's Vacuum Tube Page
Vacuum tubes for antique radios and tube audio gear.
Guitar Electronics Projects
Self-built guitar tub amplifiers. Showcases design and stories beyond tube amp building, effects pedal building, and related music projects.
Klaus Boening's Tube and Audio Homepage
Describes a 50 watt tube power amplifier for high end applications, including schematics and description of the circuitry.
Leon's Audio Page
Showcases the author's build of tube amplifiers, pre-amplifiers and restorations of tube radios.
Lighthouse Electric - Hobby Electronics
Projects and tutorials. Switched Mode Power Supplies, Vacuum tube and solid state audio amps.
London Live DIY HiFi Circle
British-based informal group focused on advancing do-it-yourself audio reproduction features membership details, overview of current and past projects, a newsletter, articles on systems, and links.
Matthew Anker's Electrostatic Loudspeaker Pag
Information on HiFi electrostatic loudspeakers. Contains information on how to get started and build a basic panel.
nMine.com Developments: Multi-amplification DIY Pr
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.
PCB-Design
Kristijan Kljucaric offers his blue-colored PC board (PCB) designs for high-end DIY projects supported by Pass Labs, including amplifiers, pre-amps, crossovers, and power supplies.
Pete Millett's DIY Audio Pages
Depository for a variety of audio designs and projects, especially tubular amplifiers. Site offers photo gallery and details on the author's projects, downloadable PDF documents, and technical diagrams.
Pjay's DIY Speaker Building Page
Information on speaker building: how to build speakers, find drivers and a listing of projects.
Promitheus DIY Audio site
Includes projects and articles about amplifiers, preamplifiers, speakers and cables.
RJM Audio Cable
A resource for the design and construction of speaker cables, interconnects, and digital cable from inexpensive and commonly available wire and cable products.
Tube Amplifiers by Giovanni Schiavon
Offers a range of drawings, photos of components and complete builds, downloadable manuals, and descriptions to build vacuum tube amplifiers.
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.