crackling sound out of right speaker

Blue Heaven must have a crack or poor termination somewhere. Opening shrink tubes may be necessary. Try to use different speaker cables or better use generic speaker wire just for the test.

"I did some more troubleshooting"... Does that mean you repeated the experiment of swapping the speaker cables? And got a different result from what you reported previously? The impression I had is that swapping the speaker cable terminations AT ONE END, such that the L speaker is now driven by the R amplifier channel and upstream components, and vice-versa for the R speaker, did not move the problem from the R speaker.

But when you say you "swapped speaker cables", that could also mean that you took the R cable and used it to connect the L amplifier to the L speaker, and vice-versa. If you did that, only the speaker cables are tested. Which is correct?

Involving your dealer is likely your best bet for your situation. Good luck

I am going to be working with the deal on this issue. And to ansswer Lewm's question, I physically switched left & right speaker cables, also switched cables alltogether so I think something is going on with the speaker.

Did you try to use DIFFERENT cables or generic wire?