Can't help you there. My TV came with separate speakers, They are currently in my basement in an unopened box. The only sound I want is from the Axioms.
I am pretty sure though that a few other people here use their TV speakers at times. I'm sure they'll pop up with some advice.

Getting to 2,000 posts; one year at a time vp160/qs8/qs4/SVS 2000/m60/Monolith 3x200 amp