two. Spot your speaker from the center of your carry-on bag. This will aid to distribute the load evenly and prevent your speaker from tipping about. Loudspeakers must be stored within a carry-on bag or checked luggage. They cannot be positioned during the overhead bin or under the seat https://www.bluetoothspeaker.top/custom-music-bluetooth-speakers-outdoor-subwoofer-bass-wireless-bt-speaker/