Welcome to my website for audio enthusiasts and professionals alike. My name is Bob Cordell and I hope you will enjoy the contents here. The content will evolve and grow. Indeed, some of the pages are place-holders at this point.
Home Entertainment 2007
Peter Smith, Darren Kuzma and I presented a series of six Listening & Measurement workshops at the HE2007 show in New York City on May 11-13 at the Grand Hyatt Hotel (www.he2007.com). These workshops were jointly sponsored by Stereophile Magazine and Ray Kimber. Select the HE2007 tab to see the Show Report and details of the workshops.
What's on this Site
Here you'll find information on audio electronics design and loudspeaker design, with several projects of each described. Within audio electronics, most of the material is devoted to power amplifier design and the design of audio test instruments, a good example being a DIY THD analyzer. The loudspeaker area includes descriptions of four loudspeaker projects, including an active 3.5-way mini-tower and a subwoofer. Most of the speaker designs use first-order transient accurate crossovers. The loudspeaker section also includes a description of EQSS, a low frequency loudspeaker system technique that combines the best features of sealed systems and vented systems. Finally, over the years I've published a number of papers on audio, and PDF's of those are also available here.