The IW C7THX is based on the in-wall version of the world’s first THX Ultra2 certified speaker. The IW C7THX sets a benchmark for main channels playback of...Music and Movies...Digital and ProLogic...DVD and CD. David Smith, Snell’s president and chief engineer, solved the three problems that hold back In-Wall speakers from serious theater consideration. First, to control bass performance, a special “back-box” enclosure was developed, this like all conventional loudspeakers enclosures, determines the speaker’s bass response. Second, the best materials were used. Other In-Walls use cheap plastics, which color the sound and leak sound to adjacent rooms. The IW C7THX features a heavily braced and well-damped MDF cabinet to optimize performance by controlling resonance. Third, the tweeter-midrange array mounted in its own acoustic chamber. The result is a system of uncompromising neutrality and dimension. The IW C7THX deploys the components of the award winning Snell IC C7 in a space efficient enclosure designed to fit into conventional 2 x 4 walls, even behind acoustically transparent screens. Intended for home theater and music system’s L/C/R channels, the IW C7THX features a three-driver eXpanding Array (XA) of dual 2 ½-inch midranges and 1-inch aluminum dome tweeter. This unique driver/crossover innovation manages vertical directivity without lobing, for a natural and “airy” soundstage. Furthermore, its controlled dispersion pattern and special tuning compensate for unpredictable room acoustics and boundary interactions. Coupled with two 8-inch high output woofers, the IW C7THX is capable of tremendous output, providing effortless, powerful sound to below 60 Hz. Every IW C7THX is assembled by hand and individually calibrated, assuring performance to within 0.5dB of its reference standard.