Originally Posted by MixManSC

Other than stuffing the fins on the back of the lower cost bars with foam or rubber blocks the other option is to go with crazily expensive top of the line light bars. They are a LOT more expensive but you can find plenty of reviews where there compare them side by side with the cheapo ones and the quality and light output are far better. That being said, I have not bought a $500+ light bar myself.... I cannot afford that for the little amount of use I'd actually get out of it.