The iW4-ARC is our powerhouse architectural product. In a good installation, you might think you were listening to a pair of Classic Three's on stands. Outrageous dynamics, terrific bass, high output are present in the iW4-ARC with no loss in detail 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 spot for an unrivaled listening experience from an in-wall speaker. The iW4-ARC body 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. All in all, the iW4-ARC is the perfect in-wall home theater system speaker. (iW4s can also be used in-ceiling though the dispersion will not be as ideal as the ic4)