Quick update, those rear speakers do sounds noticeably better now. I did replace them with some new 4" fosgates, and the balance of sounds just seems a bit more rich.As concisely as possible:
Replace your rear pod speakers with those of your choice
Connect a wired or bluetooth module to your Bronco, and turn your Bronco on (don't start the engine)
Open ForScan, save a profile if you need to, it will inventory all your modules
Choose the ACM module for configuration editing
Take a backup of the ACM module, because you should
On line 727-01-01 change 382B to read 3800
Hit the write button closest to your mouse, it should be on line 727-01-04
Turn Bronco off, remove module from OBD port, turn Bronco back on
That's it.
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