Originally I was looking for one sub to complement my 12" fullrange speakers at home and smaller events. It resulted in a pair when I came across this 15" Sub. One sub had been enough but you never know when you are needing two in a bigger event room and when that time comes the subwoofer can be out of production needing you to don't find a equal.
Amp is a little weak but think it performs well anyway. Setup will work for weddings and moblie dj party for approx 350 people with ease.
Have the same size as a 18" Subwoofer box. Not that easy to carry longer distances but solved attaching 4 pcs furniture wheels from Ikea or equivalent store at the back of the speaker. In the same moment the 12" speaker can be on the top and just roll the set over the floor. If you don't want to drill in speaker there are boards with wheels to buy in hardware stores just placing under the speaker.
Groundlift, phase invert, shape, adjustable high-pass filter from 40-250 Hz and possibilities with signal outlet in every possible direction are things that I valued a lot to set the sub after the character of the room.
Overall I'm satisfied and setting my rating over what you get for the money. It's an average speaker