Research on loudspeakers utilizing the Line Array/Line Source and Dipole principles of operation, including: True Ribbon, Planar-Magnetic, and Cone/Area Driver Loudspeakers.

Director of Research: John Whittaker

57647 visitors since 28-Dec-2001

"Measuring large dipole speakers is always problematic, because the underlying assumptions about the measurement techniques and their relationship with the device under test are no longer completely valid." John Atkinson

A new beginning in June 2001. Bob Stout ( is the benefactor of the move of the ALSR website to his server, and URL address. Many thanks to Bob, a friend of the DIY audiophile community.

31May05 - Apologies to any who might have noticed that several months ago the ALSR website was reverted to an earlier version (December 2001) from its last incarnation in June 2003.

06Jun05 - Bengt Dahlberg has created a wonderful new ribbon design for use with neodymium bar magnets. He has authored a set of webpages (in progress) detailing the DIY instructions for recreating his design. Take a look at his design and fabrication methods here (under "Projects" and "Ribbon Tweeter-A Tall One"): Dahlberg Audio Design (English). - Send Mail. Last modified: 06 June 2005 10:20

All text and HTML files/documents at this web site are Copyright (c) 1997 - 2005 by John R. Whittaker unless otherwise noted. All photographs, schematics and any draftings and mechanical drawings at this web site are copyright (c) 1997 - 2005 by John R. Whittaker unless otherwise noted. All rights reserved.