Monster Cable AIS-10 CM Round Flush-mount Speaker With 5 .25-in. Driver (Discontinued by Manufacturer) 5.25 2-way flush-mount speaker system. Low loss advanced fiber system cone from DuPont for extended bass response. 10 oz. Barium Ferrite magnet increases speaker efficiency for higher power handling and crisp bass. 1/2 Dome Tweeter with INVAREX diaphragm increases dynamic range. High frequency control for adjustment for different room acoustics.