BG Radia BGX-4850
The ribbon drivers BG Radia uses across its speaker lineup safely puts the company in "high end" territory, but getting big bass out of ribbons is seriously challenging. The company has used conventional drivers in a THX Balanced Bass-line arrangement to solve this problem with its BGX-4850 in-wall subwoofer. The speaker uses balanced pairs of modules, each with 12 micro-woofers, to generate a thumping surface area equivalent to two 18-inch drivers. Add in a healthy 2,000-Watts of oomph, and you've got vibration-free bass coming out of your walls at "lifelike playback" levels, courtesy the first in-wall sub to earn THX Ultra2 certification. Everybody will know where that $7,000 went, so warn the neighbors.