Designed and tooled from the ground up, the speakers meet the demand of today's high performance amplifiers while maintaining factory dimensions for original location mounting and are compatible with all digital music sources.The "N" Series features 4 models that feature ultra thin 1.77" mounting profiles to fit in virtually any installation application. These 4 models with neodymium magnet structures which are 5 times more powerful than standard speaker magnets, allowing for a substantial reduction in mounting depth and feature enhanced power handling and heat dissipation characteristics. Their Dual Voice Coil design (on 3 models) allows you to connect 2 stereo channels from your radio to one speaker, providing you with maximum sound for a single speaker application!