Compare Sennheiser Ambeo Sub 350-Watt Subwoofer - Anthracite

350W (RMS) class-D amplifier and high-end long-throw eight-inch woofer deliver immersive audioClosed enclosure enables deep, powerful bass down to 27HzBluetooth connectivity allows for easy wireless connection to up to four subwoofersAdvanced self-calibration system adjusts to the room you're in for better sound in any spaceRequired accessories (sold separately): Speaker wire (make sure to measure the room so you'll know how much wire to get)