No expert on audio but the ohms need to be matched to the previous speakers/amp. When unmatched your problem can happen.
I really believe the stock amp was "okay" as they play the stock speakers loud enough but yep you're definitely right it's no substitute for something rated eg. 60-65 watts per channel etc"with dedicated jbl amp"
i think you're on to something, OP..
Thanks for that informative assessment, I picked a 4ohm speaker (3ohm with wire resistance 4ohm) because it has a high sensitivity @ 93 db's and thought the little amp "should" be able handle it. When I took out the stock speaker I noticed it had 2ohm on the back welp... I'm not sure how it's connected to the dash speakers and total ohms etc but I'll find out when I pull the dash speakers.Two biggest impacts on "loudness" will be:
From other posts I've read the front speakers are in a 2 ohm configuration which puts you at a disadvantage. Adding more power as GusChiggins mentioned may be the way to increase the output to match the rest of the system...
- the speaker efficiency measured in decibels (db) usually at 1 watt at 1 meter
- and as SJM mentioned, the Ohms...
I'm thinking this is the way.. however I would prefer to not bypass the stock amp as I already went all in with my jbl spare tire sub.another option is taking out or replacing the dash speakers as well, or adding an amplifier to bypass the stock amp