I do know Bose includes a name of getting a fraud / poser by audiophiles, but it surely's an excellent product for what it is. Quick summary: Mainly because passive radiators don’t have their personal committed electrical power supply, they're able to’t get as loud as separate woofers can. https://www.bluetoothspeaker.top/new-outdoor-waterproof-portable-wireless-bt-5-0-subwoofer-bass-speaker/