Pioneer XPRS12 12-Inch Active PA SpeakerThe Pioneer XPRS 12 is a 12 inch two way full range speakers from the XPRS Series. The speakers are enclosed in 15 mm birch plywood cabinets to deliver a natural, dynamic sound. Pioneers patented AFAST technology drastically reduces standing waves that can produce a muffled response in the low to mid ranges. An acoustic tube in the cabinet absorbs just the standing waves, increasing the low frequency response. The XPRS12 uses lightweight 12 inch