The iW4-ARCis our powerhouse architectural product. In a good installation, you might think you were listening to a pair of Classic Threes on stands. Outrageous dynamics, terrific bass, high output are present in the iW4-ARCwithno loss indetail thanks to two 5.25 anodized aluminum cone woofers, a 2 anodized aluminum dome midrange, and a .75 anodized aluminum dome tweeter. This Tweeter-Midrange module is the same module used in all 3-way Classic series designs. The advantage of a dual-woofer 3-way design is low distortion and wide dispersion, and enlarges the sweet spotfor an unrivaled listening experience from an in-wall speaker. The iiW4-ARCbody features a new material that eliminates spurious resonances from interfering with proper sound reproduction.Lastly, the grill is easily detachable since it is magnetic and the IW4-ARC is easily installed and can be mounted vertically or horizontally in the wall.