small but sufficient for a convertible
Coupled with a Focal Impulse 4.320 the result is not bad. At the unpacking we have a doubt seen the size of the 2 boxes but once well adjusted with your system it is not bad.
Well, you shouldn't dream, it doesn't replace a 38cm 1500Watt subwoofer, but when you don't have space and you want to keep the volume of the trunk (already not big) it's a good solution.