OB1 - an experiment in open-baffle loudspeaker design

Still undergoing development after two years, the OB1 open-baffle loudspeaker combines a large bass driver with a small full-range driver; a so-called F.A.S.T. design (Full-Range and Sub-woofer Technology).

I have documented some of the R&D phase for posterity.

5-Sep-2008: experiment 1 - driver offset
5-Sep-2008: experiment 2 - driver variation
6-Dec-2009: experiment 3 - four full range drivers

Open baffle speaker designs are fun!

We found a great demonstration of how a baffle works at Spectrum, the science museum in Berlin. Movie 1 (1.4MB) demonstrates a high frequency tone then a low frequency tone. Movie 2 (1.3MB) demonstrates a low frequency tone again. Try to ignore the background noise in the second movie. :-)

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