Just took delivery of 2020 Crew Max with the JBL 'premium' sound system, and it is absolutely anemic. Can hardly hear the subwoofer even when set to max bass, and if I set the fade to full rear, the four rear door and behind the seat subwoofer can hardly be heard. Turning volume to very high setting yields very weak volume from the rear. What is the problem? My 2010 Tundra with standard system sounded light years ahead in bass response!