New for 2009 D1 speakers might be the starting point of our coaxial and component  range, but they are anything but entry level.  Most speakers at thie price level use a PEI (plastic) tweeter dome. D1 coaxial and component speakers use a real aluminum dome tweeter for detailed high frequency response.  Rubber surrounds and stamped steel frames ensure these speakers will provide years of listening enjoyment for that trusted Diamond sound.  D1 series speakers carry a one (1) warranty only, regardless of installation.