installed front speakers and they really ****!! i need help

[Dr. Slam 10+ year member]

i have a buick lesabre and i installed some infinity kappa 52.9i 5.25 speakers and they sound alot worse than my factories. i also installed infinity kappa 6 x 9s and they sound good. all of the speakers are wired to a mb quartz 4 channel amplifier with each speaker having its own channel. all of the speakers are wired with 12 gauge wiring. the front speakers sound so bad ( by bad i dont mean distortion, i mean the music coming from them sound like music coming from dollar store headphones. it isnt loud and sounds terrible imo ) ive tried various different crossover settings to no avail. i know this isnt how these speakers are suppose to sound. is it me or is it the speakers? i am a car audio newbie and i do not know what else to do. any help would be greatly appreciated!!!

Happy holidays to everyone!!!

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[Bassin Buick]

I have a feeling you wired one of them backwards. Try taking the left speaker wires off of the amp and flip. IE , the one on positive needs to be connected to negative , and the one on negative needs to be connected to positive.