Component or coax?

[Jdunk54nl]

In fords, the signal going into the doors is full range and the speaker naturally rolls off. No crossovers on them.

[SublimeZ]

Highs from pillar and lower door are less than optimal.

[jtrosky]

Actually, let me clarify my question... Assuming the tweeter on a 6x9 coaxial speaker is effectively disabled via crossovers, does the tweeter physically interfere with the sound coming from the main 6x9 speaker cone? I completely understand that having two tweeters active at the same time (one in dash/pillar and one in door) is less than optimal, but I'm talking about if the tweeter in the 6x9 coaxial door speaker was inactive due to crossovers. I just wasn't sure if the tweeter physically being there would impact the midbass sound from the 6x9 cone - as in physical "interference".

[Queef]

Will you be able to hear it ? If so , attempt to solve the problem.
I would try it with volume turned down and cranked up , then , assuming there are no major issues ( lack of bass , et cetera ). Use it just the way it is !

As far as tweeters go , up stage kits were once sold ( a second tweeter up high , lift up stage ). If you "hear" something you do not want to hear , attempt a fix or repair.