Register to get Bose emails and communications for exclusive Gains, promotions and new product info. The best frequency range is between 100Hz to 20,000 Hz. The previous is the lowest frequency while the latter may be the highest. In addition, smaller speakers generally have a small frequency range. It's https://www.bluetoothspeaker.top/new-bt-wireless-big-cube-waterproof-portable-outdoor-super-bass-horn-bt-speakers/