The woofer is a 6.5 inch or 165 mm with a 1.0 inch or 25 mm aluminum dome tweeter attached to it. The woofers themselves are made of a mineral filled polypropylene cone body and come with a 1.0 inch or 25mm voice coil. The low profile, symmetrical roll spider and butyl rubber surround all enhance the look and performance of these speakers. The tweeters are housed in a 1.0 inch or 25 mm alumimium dome, complete with a rubber surround and ferrofluid cooled and damped. The tweeter angle can be adjusted and they use a neodymium magnet. The crossover network is a two way network with a low pass and high pass circuit. There are 3 poistions for both the tweeter output levl and the midrange presence control. Polyswitch tweeter protection is included and premium mylar capacitors and air core inductors were used.