Took delivery of a 2023 Tundra with JBL Premium Audio yesterday, and first impressions are that I'll be replacing all the speakers as well as the subwoofer, just as I had to do with the JBL Premium Audio system in my Tacoma. The stock speakers (in my Tacoma) were junk, and JBL should be ashamed for allowing their brand to be attached to them. A suggestion is to insert a small amp that's dedicated to the subwoofer; I did (in my Tacoma) and it made a tremendous difference. I also cut a 10" round hole in the rear seat back panel ... I couldn't stand the thought of the sub output bouncing off a plastic panel only an inch away.
Yea I know I have a 4 second area that triggered a copyright claim but after writing I do no own rights to the music in the description it changed to owner allows use of music on RU-vid. But thanks that was the first thing that happened immediately after uploading it.