Consumer Reports recently did an article on the "Best (and Biggest) Portable Speakers for Tailgating". In there, they included our Block Party Wireless Multiroom Bluetooth Speaker.
While the Block Party was originally designed for an in home sound system, we've found (and consumers) that it's great for outdoors as well. It gets loud enough for numerous outdoor situations, including tailgates.
"But don't be fooled by appearances. The Block Party plays surprisingly loud even outdoors.."