That's something I definitely (and sadly) can't do in our current car with this cab. Weirdly, it would have fit in our old Jazz, which had back seats that folded all the way down and a boot which opened all the way up. It was incredible the things we could cram into that tiny car. Current car is much roomier for the humans who travel in it, but no good for moving big things!
I actually totally forgot to open it up to look at the speakers today but did play through it for an hour or so, and was very happy with the way it sounds.