I'm David and I want to get the best bass possible for arround 1375 eur.
Mainly I need a amplifier and subwoofer(s) I could try to build the subwoofer case myself if that's better.

link: bassbrothers.no/bilstereo/basspakker/bassbrothers-15quot-spl-basspakke
I got suggested this pack by a friend of mine, is it a great pack for that price or should I buy something else? And is Pioneer DEH-X7800DAB a decent player?

Thanks in advance, looking forward for the support.