Shown below are some pictures of quarter wavelength loudspeaker designs that people have built. Some of these projects are direct copies of my designs while others are original designs generated using my MathCad worksheets. Under each picture is the builder's name and an e-mail link so you can ask questions or provide some feedback. If you have also built a quarter wavelength loudspeaker design based on my MathCad worksheets, please feel free to send me a picture for inclusion in this gallery.
The Crossover is Built into the Base
Built by Paul Kittinger
Built by Kirk Snodderly
Built by Vincent Corpuz
Built by Rainer Pache
Built by Vincent Corpuz
Built by Jay Kunstman
Built by Paul Kittinger
The Crossover is Built into the Base
Built by Paul Kittinger
Built by Mike MacIsaac
Built by Michael Bacik
Built by Mathieu Bronchart
The Crossover is Built into the Base
Built by Paul Kittinger
Built by Marko Tammilehto
Built by Jim Shearer
Built by Steve Duffy
The Crossover is Built into the Base
Built by Paul Kittinger
Built by David Joelsen
The Crossover is Built into the Base
Built by Paul Kittinger
Built by James Householder
Built by David Zicho
Built by Paul Kittinger
Built by Jon Hoskins
Built by Sidney Ma
Built by Paul Kittinger
Built by Carl Richard
Built by Maynard Goff
Built by Daniel Advis
Built by Symeon Koligas
The Crossover is Built into the Base
Built by Paul Kittinger
Built by Philippe Grandsire
Built by Erich Hennig
The Crossover is Built into the Rear of the H Frame
Built by Brad Rice
Built by Graf Imhoof
Front and Rear Mouth Versions
Built by Colin Topps
Built by Daniel Advis
Built by Hubert Pellet
Built by Jim Shearer
The BSC is Built into the Base
Built by Paul Kittinger
Built by Toby Patton
Rear View
Built by Richard Goodland
Built by Esa Cardoso
The Crossover is Built into the Base
Built by Paul Kittinger
Built by Aaron White
Built by Pete Menting
Built by Bill LaDieu
Built by Brad Rice
Built by Joseph Potgieter
Built by Ed Hlywa
Available from Aurousal Ltd.
The Crossover is Built into the Base
Built by Paul Kittinger
Built by Dan Hatmaker
Built by Jack Ha
Built by Hans van Rooij
Built by Martin Paul
The Crossover
Built by Mike Rains
Built by Paul Kittinger
Built by Peter Myers
Built by Rudy Vanclaire
The Crossover and 45W Monoblock Amplifiers
Built by Vasile Carcei
The Crossover is Built into the Base
Built by Paul Kittinger
Built by Francesco Campedelli
Built by Francesco Campedelli
Built by Carl Peake
Complete with name plate!
Built by Brent Frazee
Phase Plug
Built by Torry Hgeland
Owned by Stephn. Designed by Jay Fisher and Pete Riggle, built by Pete Riggle and Stephn.
Built by Franz Dorfmueller
Built by Scott Lindgren
Built by Hudson Miller
Built by Paul Norton
Built by Paul Norton
The Crossover is Built into the Base
Built by Paul Kittinger
Built by John Hageman
Built by Rob Flynn
Built by Jorge Omar
Built by Christian Belgardt
Built by Stephen Small
Built by Zoran Dimovski
Built by Zoran Dimovski
Built by Pete Menting
Built by Paul Kittinger
Built by Yourane Ung
w/ Custom Phase Plugs
Built by Laurence Platt
Built by Dave Merrill
Built by Ryan Bergmann
Built by Paul Norton
Built by Jeremy MacLennan
Built by Pedro Leite
Built by Jacques Cande
Built by Artan Ymeri and Viktor Halili
Built by Steve Carlton
Built by Jeremy MacLennan
Built by Ron Parsons
Built by Lerio Agner, Jr
Built by Bob Schense
Built by Stefano Billiani
Built by John Hageman
Built by Markku Myllyla
BSC Circuit Using Hand Wound 6 lb Air Core Inductor
Built by Leon Licer
Built by Jay Fisher
Built by Tsvetan Taslakov
Built by Bill LaDieu
Built by Scott Dunn
Built by Rolf Paloheimo
Read about these in Scott Faller's TNT-Audio Review
Built by Jim Salk
Built by Jan Babic
Built by Mike Howard
Built by Verne Mattson
Built by Moray James
Built by John Hageman
Built by Henk Koetzier
Built by Mark Krawiec
Built by Allan Jones
Built by Galin Lyubenov
Built by Mark Krawiec
Built by Raymond van Weeghel
Built by Rolf Paloheimo
Built by Allan Jones
Built by Bob Brines
Built by Alain
Built by Johari Yip
Built by Thad Aerts
Built by Martyn Redwood
Built by Bob Brines