We were painting in our basement today. We had the radio at the normal listening level in the HT. There is one door at the entrance to the basement - we couldn't here it in the kitchen directly above. My theater has RSIC + GG. There isn't much LFE on the soft rock station which is the only thing we could get. I cranked it later, and my wife said it was clearly audible, but not disturbing. The GG has only cured 4-5 days of the 30 - and there are a ton of flanking paths (including at that time an open bulkhead). I am encouraged. I think it will be worth the sore back.
Looking good, BTW