Faulty Infinity 8602cfx reference speaker??

[b33fstu]

I just recently had 4 Infinity 8602cfx reference speakers professionally installed in my doors. Powered by a JL 360/4 amp. I've been noticing that 3 of the 4 speakers kick butt and sound awesome!! The front left speaker is noticeably weaker and doesn't have the same punch as the others.

I have tried the following:

Swapped RCA inputs. I suppose the rca dedicated to this speaker could be bad or have a short??

I swapped the speaker wire channels.

So far 0/2 the front left speaker remains weaker and not as clear as the rest...

Any help on this matter would be greatly appreciated.

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[b33fstu]

PS I also enabled both doors +3 db switch on the tweeter as I noticed the weak speaker wasn't as clear and wasn't hitting the highs as well as the other speakers.

Thanks