So, I put my Pioneer head unit in my '03 vibe, using a Metra factory harness, and everything seems to be working fine. However, my front door speakers are bad, and were before I swapped out the head unit. The driver side tweeter isn't working and both front door speakers/woofers (not sure if they are two way or just woofers, as I haven't had the doors apart yet) are rattling, I assume from either foam dry rot or just being nearly completely blown. Anyway, since I know I have the amp working properly and I know the amp is designed to run 2-ohm loads.... would I be better off getting a pair of 4-ohm door speakers and a pair of 4-ohm replacement tweeters, and wire them in parallel (with a crossover between them, of course), to keep the load in the doors at 2-ohms? Are the factory tweeters in the doors wired in parallel to the woofers or do they have their own, crossed-over output from the M&T amp? Back door speakers are fine. They don't sound great, but they sound good enough that I can't be bothered to replace them at the moment, so I am going to just keep using the OEM speakers in the back doors for the time being. Anyway, if someone knows the answer to my questions about the front door speakers that would be a BIG help to me. I want to have an idea what I am getting into and have the parts I need to do it right the first time.
I am sort of surprised that I don't hear the amp breaking up from being run off the speaker outs from my head-unit, but I don't usually crank it up loud, I just listen to music or talk radio going to and from work, and the rattling front speakers are driving me crazy, LOL. But, I don't hear any breakup in the back speakers at all, so I am pretty sure I'm not overdriving my car's factory amp.