has anyone ever closed an A7 cabinet making it a sealed box and if so what were the results,,??

I did my mods, filled the bells, woofer bell, doubled the cabinet from 3/4" to 1.5", dimpled acoustic foam most all of the interior and built a great crossover I received from an audio engineer that really smooths the horn,, was thinking of mounting the horn in a panel and then using that panel to close off the cabinet running it in a sealed mode,, curious if others have tried,,

thanks

Derry