According to my recent readings, the EP-2500 is likely to produce the 750W you mentioned (Bruce) only with the dual 2 ohm configuration (in real world). I am even wondering if I should reconsider the amp choice

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Concerning the port velocity, I will kill this 26m/s limitation by using a 10" port, 80 cm long, but in a 600 L effective enclosure

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I wanted to ask about the insulation, what's the material to be used, and where.
I also wondering if carpetting the outside of the box is similar to insulation?
Thanks for your highly appreciated efforts Bruce!!
Blaser