E87 118i
just had my amp and sub for 2 weeks now, went back to the dealer as they said I should to set the gains etc after the sub was been run in.
sounds now like I have much less bass, from having a look at the amp now , it seems it was on full range on the fliter before and now theyve put it on low pass, Ive always known that you run the amp low pass with a sub, but cant help feeling im getting a fuller sound with it on full range, will damage the the sub by not running low pass on the amp ?