1.25 cubes per sealed chamber and the ported chamber is 5.44 net tuned to 58 i beleive. It should peak in the mid 40's. Since the subs xmax is so small i had to keep the sealed chambers fairly small to help low end compression, which raised the peak a bit higher.
The subs are meant to have their motors in the ported box, to help with cooling. Thats how their displacement was figured as well.
That took me about two and a half hours....so how ever much you think my time is worth? It would only take me about 5 minutes to do a cutsheet since i have the sketchup file. 15$ would do.
There would be no problem with replacing the entire lid with plexi.
Sorry to keep you waiting, been gone all day.