The blue mark on the stock speaker is positive side. If you haven't cut them off, then use this to keep your polarities in order while you hook up each speaker. The cone will move the opposite direction if you have them backwards. I can get you wire colors if you.want to try rewiring them

 

I had the same issue with the kenwoods, and really same with the kappas, but not as bad. The stock speaker has a larger cone than any aftermarket 6.5, so it does hit a lot lower than them. It also has to do with the RMS power of the radio, it can and does move the woofer cone, but it doesn't control it well enough and ends up "thunking" before any good bass comes out. Alpine and Clarion make an inline amp that will fit behind the dash to provide more, and cleaner power. Then the other option is to add a small sub to more than make up for the loss, and you won't worry about it anymore

 

One thing I noticed it there's a huge *** coil midway through the wire to the woofer in each door. It's bigger around than my thumb. My granddad who helped me install the speakers suggested cutting out the coils then splicing the wires back together. He figured the lack of bass might be caused by the need for more power to be pushed through the coils. I figured I'd ask before I go tearing into the door and cutting more wires.
Thanks,
Tommy

 

I'm not sure which coils these are. Are they in the new speaker or in the stock wiring? Chances are, if they are in the new speaker, they are there for a reason. A coil is usually used as an inductor, which in the case of a speaker would aid in noise reduction.

 

My front speakers on my Dodge Dakota quit working. I found the magnets had broke off and replaced them with factory oem speakers from Dallas Dodge for about 30.00 each. Worked great. Easy to replace. Used oem speakers since they lasted very good for 10 years.

 

Umm, no.

The coils are inductors that increase the impedance for higher frequencies.

You'll find capacitors going to tweeters to increase the impedence for LOWER frequencies.

That serves to block the high frequencies (woofers) or low frequencies (tweeters) to the affected speakers.

Now, if you want a full range speaker there, then yes, bypass the coil.

If you're putting a woofer in, then no, don't bypass it.

RwP