THX Select Model 4400 LR Front Channel Speakers are high-performance 2-way systems intended for use with a quality subwoofer, such as the THX Select Atlantic Technology Model 642e SB. Each 4400 LR contains two proprietary GLH (Graphite Loaded Homopolymer) 5.25" (135mm) midrange woofers, and an audiophile reference 1" (25mm) ferrofluid-cooled, damped silk dome tweeter, with a powerful neodymium magnet structure. The 4400 LR is available in High Gloss Black or Satin Black. The 4400 features a flush rear terminal cup and dual keyholes, for wall-mounting capability.

The midrange and tweeter elements are configured in a midrange-tweeter-midrange array, providing wide left to right sound coverage while limiting the harmful effects of floor and ceiling reflections that color the sound and degrade vocal intelligibility. To further highlight the attention to detail that went into this system, Atlantic mounted the speaker components in an acoustically inert, heavily braced MDF enclosure, applying extensive magnetic shielding to improve mounting flexibility close to a video display without concern for picture distortion.

The 4400 LR's and C include unique acoustic controls that allow the system to be calibrated or tuned, maximizing their performance in the real world environment they are going to be used in. These controls include a special high frequency contour switch which compensates for overly damped (heavily carpeted or upholstered) rooms, or especially bright rooms. And a boundary compensation switch eliminates the negative effects of mounting a box speaker inside a cabinet, as is so popular these days. Engineered to the highest standards, these audiophile grade equalization circuits are a part of the crossover, meaning they will not degrade the sound of the speaker, but in fact will offer a significant improvement.