Yes, knowing what particular settings/features in the avr you're using might help, as would information about speaker placement, particularly the center, and how far away you're sitting from speakers. Did you originally set up the speakers using the YPAO program in the avr? Are you varying the master volume for all speakers, or just raising level for the center? If you haven't tried raising the trim level of the center in the avr, that could be an idea as is using the DRC (Dynamic Range Compression) feature.
I have one of those Energy Take Classic sets, while decent for the price, there are much better speakers out there that may help as well.