I started with those JBL Club 3020 and definitely an improvement over factory.
But then I switched to Hertz 87.3 and with higher sensitivity (92 vs. 89) they play about 3 dB louder than the JBL Club 3020 with factory power. (Every bit counts if you are not amping). I also preferred the sound...
Just replying to this as I have just upgraded by 2003 to a 2018 and was looking at making this change. Didn't see anything definitive in the numerous threads I read on it. I did pull out my tweeter and it read 4 ohm or slightly less measured at the speaker terminals on a multimeter.
Also the...
