The issue just happened randomly one day - so the harness should be fine as we hadn't had an issue with it since we have owned the car.
When you say "block connector" are you referring to the wiring harness?
I guess I can buy a pair of speakers and put em in and see if it's fixed.
Btw, the tweeters high up on the doors, what size are those and are they easy to replace?
With a DMM (digital Multi-meter), pick a favorite song, and meter the speaker wires at the deck. then, meter at the door. Now, i know that its going to be speratic since a song changes tones, voltage etc.. but from the sound of it, it would be a drastic voltage difference.
What they mean by "block connector" is usually, there is a "big a$5 plug" that goes between the door and the wire boot (that thing in the door jam). They use them so that removing the door is made easier. double check to make sure it is secure and that wires going to/from it are not wobbly. you might try unplugging and re plugging it in.
the tweaters are more than likley 1" and probably are removable by a Flathead screwdriver. be carefull though. they unusually are held in by thin plastic clips.
To me, it sounds like both speakers are blown. but to double check.. look at the wiring at the speaker, inspect the speaker itself too. one thing you can do to rule out the wire harness (or the wire going to the door) is by taking some speaker wire to the speaker itself and try it on the deck directly. this will tell you for sure if the speaker is dead, or if the deck just happens to be bad. (you can also test the speaker on a home theater.. or stereo. wire it in and see if it makes noise)