Description of 50CVX122: The CompVX stands alone among round subwoofers, using all of the exclusive Solo-Baric L7 design and performance features except the square shape. The cast aluminum basket comes with a motor-cooling perimeter venting and spring-loaded terminals that can accept up to 10-gauge wire, so when you run tons of power to this sub, it gives you loud, distortion-free bass all day long. Description of CANON XXL: The Rockville CANON-XXL is an XX large sized portable Bluetooth speaker that is engineered and DSP-tuned to have extremely deep bass with a very pleasant frequency curve. When you pick up this speaker you can feel the weight of the amplifier and the drivers. We give you 3 sound curves that all have amazing sound. Just press the M button to change from one sound curve to the next. The default one has a pleasant balanced curve while the second curve is a mid-boost mode great for rock music, and the 3rd one is an outdoor mode which will play louder high frequencies. All 3 sound modes have incredible sound. One of these units will be loud enough for a party but if you want to really get crazy, you can easily sync 2 of them together wirelessly with the TWS mode by simply holding down the BT button. This speaker is IPX5 rated so it can survive outdoors by the pool, beach or in the bathroom. This speaker has 4 batteries ran in series that boost the voltage to 14.8 volts. The power of this speaker is like others that literally cost 4 times as much. The sound will blow you away. We are extremely proud of how good this speaker sounds. The battery life will last around 24 hours at low volume, 8 hours at mid volume, and 3 hours at max volume.