They are very nice sounding subs, I've only had them in for a week and first impressions are VERY punchy and can go very loud. My only issue is the box they are in, bass overtakes everything else on notes around the port tuning frequency. EDIT: Boot space? The box only fit in by about 10mm at the top when I removed the rear trim piece and it had to taper from 820mm at the top down to 760mm on the base so it would sit in the well and also to fit it in the boot opening. So much wasted time building that. Oh well, its all trial and error.