The XF48 speaker is part of Klipsch's Reference Icon series of premium high-performance speakers designed to complement flat panel video systems. This powered floorstanding speaker has a 110 watt amplifier in the speaker cabinet. That means you can hook the speaker directly to a TV with a variable audio output and enjoy walloping sound without a separate amplifier. You'll discover the XF-48's performance has but one rival: style. Its beautifully crafted aluminum extruded enclosure, featuring an anodized black-grain finish and high-gloss black accents, is the direct result of our engineers' quest for perfect balance. The entire Icon X Series is performance art at its best, capturing the spirit of our past and pushing us into the future. It is a brilliant representation of how our products have evolved and remained desirable over time. After just one listen, the Icon sound will be imprinted in your consciousness forever. low frequency drivers Dual 5.25 (13.3cm) high-output, fiberglass cone woofers with dual 5.25 x 9 (13.3cm x 22.9cm) passive radiators amplifier HF - Class A/B, LF - Class D Bass-reflex via dual front-firing passive radiators inputs Line-level RCA jack, high-level speaker binding posts height 48.8 (123.8cm) x width 7 (17.8cm) x depth 7.9 (20cm) not including 12 (30.5cm) diameter base / weight 39lbs (17.7kg) voltage 110/120 VAC 60Hz