The only thing I've seen of it is that the sub and amp sit in the spare wheel well so you can't have a spare wheel at the same time.
Yes you can.
We test drove an SE with the soundpack fitted, it also had the spare wheel. The sub woofer was mounted inside the spare wheel.
Andy
There is the video of Seat Sound System in action =)
youtube.com/watch?v=qLO0ait3z2k
To be fair, that steak does look super tasty...
I have it in my FR and the base is full and deep. There's a setting in the MFI for sub woofer and I like my bass but have it set to +2 -9/+9 The sound quality is sooooo much better than my previous VW & Seat radios.
I have the standard system in my new Leon ( tho it does have DAB radio ), but even that sounds way better than the system that I had in my 2011 FR...radio and ipod. The in-car sound set up through the touchscreen menu is easy to use and I think gives one of the best sounds I have had. That includes a previous Golf and Scirocco.