Thanks for the new Roger Russell URL. The history paper is an excellent review of his work at McIntosh and now in the Mac afterlife. Roger does an excellent writing job.

I also find that the new IDS full range driver line array by R. Russell design is essentially what he writes about in his June 2006 Audioxpress article. On the other hand look at the cost of the IDS (more than $16K). Your Selah Audio arrays (and your cabinet work) are a bargain by comparison.

Jim