The HT520BDP is a 5.25" bi-pole/di-pole specialty home theater in-wall speaker perfect for outfitting a 5.1, 6.1, or even a 7.1 theater system. The HT520BDP is built to withstand the high dynamic requirements of today's digital technology. High power handling(125W RMS), Esoteric Audio USA cabling high order crossovers, and PTC tweeter protection make this model a top performer within it's class. Most importantly the HT520BDP fits into standard 2"x4"-16" on-center construction. Performance, flexibility, quality, and value are all hallmarks of this impressive home theater speaker that will ensure you get More Than Xpected.