The compact, 14" Tall Aon 3 Bookshelf Monitor (on left in photo to right, with grille sock removed) incorporates a 7", High-Definition, Multi-Vaned Phase Plug (MVPP™), cast-basket Mid-Bass Driver, coupled to two 8" Inertially-balanced side-mounted Low Frequency Radiators and the GoldenEar High-Velocity Folded Ribbon Tweeter (HVFR™).