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You have bought yourself a pair of your dream bookshelf speakers and then plod them onto a pair of stands of the appropriate height without any other due considerations, and find that the sound was less than what you expect. Despite running in after the required hours they still don’t right. This can lead to [...]

This loudspeaker, which I ended up calling STYLE, was originally designed because I needed a small speaker that would play with my 300B SE amplifier. One of the areas where SE amplifiers excel is in the small details and the decay of the sounds. Sometimes this can be appreciated even better in small rooms at [...]

Please allow me to back up and start at the beginning. The person who truly invented surround sound is a man named Peter Scheiber back in the late seventies.
At that time, Dolby Labs leased Peter Scheiber’s patent for use in theaters. Dolby claimed it was theirs, but still pays royalties to Mr. Scheiber.

It’s possible to get most of the Thiele-Small parameters
from a loudspeaker by just accurately measuring the impedance
versus frequency. If this is done twice, one with the driver in open
air and one with an added (known) mass it should be fairly easy
to calculate the fs, Vas and Qt.

The following article is based on news articles posted to rec.audio.tech
newsgroup by Richard Pierce, Dan Marshall and John Woodgate at 1998 and 1999-
The article is compiled and edited by Tomi Engdahl at 1999.