MartinLogan Crescendo X 7" 140W Powered Wireless 2-Way Speaker Black Gloss Brand New, Factory Sealed Enjoy high-quality sound when streaming audio with this Crescendo X wireless speaker. It uses advanced loudspeaker technology and DTS Play-Fi wireless signals to produce clear sound without distortion or lag. The advanced DPS software and calibrated microphone of this Crescendo X wireless speaker adapt its output to your space for superior performance. Handles up to 140W peak power (100W continuous) For robust and controlled audio that is crisp and clear. 5" x 7" woofer Along with two 9/10" x 1" tweeters for a complete range of sounds. 2-way speaker system Sounds like 1 source rather than several separate sources. Built-in Wi-Fi and Bluetooth Offer easy connectivity to your compatible device. 3.5mm jack Enables easy connection of a microphone. 50Hz - 23kHz frequency response Ensures a wide range of accurately reproduced sound. Volume control Lets you easily adjust the listening level to suit your preferences.