Can any of the designers or folks in the know confirm for me that each oval port has the equivalent area of 2 sq in? I ask because I am trying to replicate a chamber and port of the 1099 (single woofer) to an equivalent slot port for a scratch design using the driver. I can’t seem to obtain the T/S from the driver (I dont have DATS) from anyone so I’m reverse engineering it. My calculations are then 6 sq in of port area, however the amount of surface area will decrease also altering the calculation. Optimally I want to maintain a net 1cu ft chamber ans in lieu of 50-60 tune, raise it up to 80Hz. My other option is to try and model a Beta 10 and see how close I get, however I know there are differences. Any help would be most appreciated. Worst case scenario, I’m going tk use WinISD to come up with three 2” ports for some theoretical driver and ask me to give me the square version of it given my 11” width.