Issues with my HU

It should, Thats all good stuff, Kappas are expensive as shit too. And I doubt its blown.

Are the tweeters seperate like on the A-pillar corner, or are they 2-way door speakers.

If you have an In-line crossover that can get toasted, as well as any thin guage wiring.

Check your level on your amp to make sure there all the same, as well as the settings on the HU, just to be absolutely sure.