Looking to install an external speaker in my 2015 Toyota Camry. There is ABSOLUTELY no space under the dash in this car. Finally was able to put my RS PRO-106 in the smart phone bin but can barely hear it. I would like to put a larger external speaker somewhere under the dash but the Radio Shack external speaker which is about 4 X 4 X 2" thick won't fit. Need a thin rectangle shaped speaker not over about 1 inch thick. Any suggestions?