his pair of 6-1/2" indoor/outdoor 2-way speakers have a high excursion polypropylene cone woofer with a rubber surround and 1" silk dome tweeter. These speakers use a passive radiator which produces extended low end response for deep, tight bass. They can produce up to 100W maximum and have a built-in bypassable, multi-tap (5W/10W/20W/40W/8ohm) 70V transformer. The speakers have an IP66 rated ABS plastic enclosure with aluminum grill and corrosion-resistant nickel plated push terminals. Yoke-style mounting brackets and stainless steel hardware are included. Dimensions are 11.25" H x 7.9" W x 7.7" D.