Outfitting a club system differs in many ways from other live sound installations. Clubs are seldom built from the ground up; thus, they must often inhabit spaces that were originally constructed as storefronts or warehouses - spaces that were never designed to foster proper acoustics. Club systems, unlike touring P.A.s that are somewhat customized to a particular act or sound, have to accommodate a diverse number of applications: touring bands, DJs, spoken word, etc. Additionally, some have realized that clubs don't have to stop making money once the bar closes, integrating its performance spaces with in-house recording and multimedia capabilities. To get a better idea of the sound issues facing club owners, the Mix editors have taken a look at three very different venues: the B.B. King Blues Bar and Grill in New York City, Hollywood's Knitting Factory and Ten15 Folsom in San Francisco.