2016 JBL system waste of time without removing head

It has been posted before, but after trying both tweeter and front speaker swaps, single and double, stock and aftermarket together, the sound signal out of the head is crap no matter what.
Worst of any auto I have owned in 30 years.

 

You need to add a line out converter, amp, and sub. Mine works great.

 

Thanks, I was hoping for plug and play.
I ended up leaving the drivers door speaker disabled as just the stock tweeter and rear was better than the line feed to anything to driver door speaker.

Not worth the time to me to run cable.

 

I have the non-jbl. You need an amp with an EQ. I have 3 way components, amp with 32 band eq, and it sounds great even with the factory head unit which sounds like ass even with new speakers.