Americans love big cars, mammoth trucks, huge houses, but for some reason they go ga ga over tiny speakers. Sure, the little guys are good enough for computers, but real music lovers should consider investing in something that can move some air, something along the lines of Klipsch's RB-81 ($698/pair) hefty bookshelf speakers. They'll blow away any lifestyle poser speakers with 3 -inch woofers. Don't kid yourself into believing that any of those puny speakers can be any better than good enough.
But true connoisseurs of big sound who need something bigger should take a peek at Lenard Audio's Opal speakers. I'm sure they'll do the job! How big are they? Big enough to house four 27-inch woofers (!!!) in its pair of eight foot high cabinets. Each system is individually commissioned and built. Most Opals are assembled with modern high quality speaker components, but some use original 1970s classic JBL drivers, "...made when engineering craftsmanship was at its height."
Lenard Audio is based in Australia, where they offer a wide range of very large speakers.