gearz

I noticed when I had my door panel off that the tweeter next to the speaker in the door isn't wired up. Thus no sound from it. Same thing with the passenger door tweeter. I'd like to hook up the tweeters, not sure how to do it. Can I just connect them together and use the crossover control in my deck to control the frequency or do I need to wire in an actual crossover? Any suggestions as to how to proceed? I can't help but wonder why they have been disconnected in the first place though?

76FJ55

Are the larger door speakers original? If not they may have a tweet built into them and the original may not be needed, and you may not improve sound quality by hooking them up. It will change the immpedence in the front speaker channel at any rate.

gearz

The larger door speakers are original. Any chance i could damage the speaker but hooking it up? My amp has 50W/4channels so it could probably handle a drop in front channel impedence.

SQLGuy

Yes, you could easily damage a tweeter by just hooking it up. At the least you should have something like a 13uF non-polarized or film-type capacitor in series (this would give a 3dB down point of about 3000Hz). A larger valued capacitor would move the crossover point lower... smaller, higher.

It's unlikely your head unit has a 2500Hz or so crossover point. Most newer head units are designed with an active crossover for a sub, but not for bi-amping full range speakers. If it does support running such a high crossover frequency, then you could use it, but make sure that the system does not have any turn on "thump", as this could blow the tweeter as well.