I'm not sure what speaker it was originally. The whole speaker went back so I received a new one but yes the last two times it was the same speaker. I have no balance control on the receiver but I was just switching the jacks around to isolate the two speakers since there is an A/B hookup for two pairs of speakers. To me it sounds like i have damaged the tweeter in that same speaker again.

I haven't noticed a clipping indicator on my receiver. I'll dig out my manual.