As the title says, I have a MK1 BAXR6, with low end sound system, but all wiring for total sound is included. I have already fitted tweeters, and they work fine. Yesterday I fitted the amp and sub-woofer-all standard, but sadly it doesn't work. My suspicion is that I will have to fit the high end screen, that contains controls over the subbie, for it to work. Any ideas?