Sony XS-GTX1640 (about 6.5-inches in diameter) exhibited at the Specialty Equipment Market Association’s (SEMA) annual trade show boasts of sleek designs and dynamic sound quality. It’s a 4-way speaker. The XS-GTX1640 is a 4-way speaker that offers an HOP woofer. The XS-GTX1640 feature 300 watts peak power (75 RMS) and has a high density layered diaphragm (HDLD). The Price of these speakers starts at about $120.