Boston Acoustics E100 Ultra High Performance Speaker (Ebony Walnut) (Discontinued by Manufacturer) 4-way system using 6 x 5.25-Inch cast aluminum frame woofers, a 5.25-inch midbass driver, 3.5-inch midrange, and a 1-inch high output tweeter All drivers use powerful neodymium magnets with heatsinks for improved power handing and freedom from thermal compression Non-resonant StabiliTek extruded aluminum cabinet provides superior rigidity improving clarity GroovLock replaceable wood veneer side panels can be changed and custom finished to match your dcor Use the E100 base (optional) for floor mounting, 2 EBR brackets (optional) for wall mounting