The Speakercraft AIM8 Five features their patented Accu-Grill that reduces unwanted acoustic reflections and independently aimed 8 inch Kevlar woofer and 1 inch dome tweeter.The SpeakerCraft tradition of innovative design, combined with one of the most extensive engineering efforts in this industry"s history, has led to the creation of the patented AIM series of fully directional in-ceiling loudspeakers. Each model can be entirely pivoted towards the listener while remaining discretely recessed behind a flush-mounted grille. If listening position or tastes change, the speaker can be easily aimed in another direction with a simple push of the hand. SpeakerCraft innovation, excellence in engineering, and American made quality make the AIM series one of the most exceptional loudspeakers ever.