IIRC these are the Infinitys with black shiny woofers & mids and Polycell tweeters that sounded similar to many Cerwin-Vegas sold at the time (I used to work in a place that sold both lines) i.e. very powerful bass and capable of very high volumes with little power applied, though I thought the Studio's higher frequencies were actually brighter than the Cerwins I heard at the time. Enclosures were not built all that heavily though IMO. Overall, to my ears an "ultra-party" speaker and not something I would have bought when they were new, but if they are cheap enough now I would use them for a casual/secondary system or because of their lively personality, an HT rig.