No negative comments please…
I know virtually nothing about car audio. My teenage son won’t ask for help & is determined to figure it out on his own. He has experience & has installed systems on multiple vehicles but he now has a 2014 mustang & he has ran into problems.

subs: 2 12” Sony xplods 1300watt max each

amp: Skar 1500 watt rms

The sub will power on but bass is very weak

…any ideas? Really hoping you guys can help!