just installed a new head unit. 22wx4. doesnt sound too great with the factory speakers. this is a 2003 blazer that does have the tweaters in the dash. the rear speakers are no problem. just 4 ohm speakers. the front is where im confused. just replace the front door speakers with 3-ways and not use the dash spekers or use componet speakers and replace the tweater in the dash? when you buy componet speakers are they 2 ohms for the door and 2 ohms for the tweater to make up the 4 ohms?

 

or could i just install 2 or 3 way 4 ohm speakers up front and leave the tweater in the dash hooked up? with that hurt the hu?