I understand Bose contains a popularity of staying a fraud / poser by audiophiles, but it surely's an excellent product for what it really is. Quick summary: Because passive radiators don’t have their own dedicated electrical power supply, they are able to’t get as loud as separate woofers can. https://www.bluetoothspeaker.top/outdoor-karaoke-microphone-bocinas-portatil-speaker-rgb-party-bluetooth-speaker-wireless/