212 Open Back Speaker Cabinet featuring (2) 60 Watt Celestion Vintage 30 Speakers. Open Back speaker cabinets have a chimier tone with more presence, opening up the player's sound and spreading it throughout the studio or live space.The Orange PPC212OB speaker cabinet, like our amplifiers, is built to last using extremely rugged construction and manufacturing techniques. Every Power Projection Cabinet (PPC) is built using 13 ply high density 18mm Baltic Birch plywood. Our unique skid feet design helps to acoustically couple our cabinets to the stage, thus providing a tighter bass response and full range tone definition. The result is a laser-focused tone that's full of warm midrange.