Optimal Airspace for Sundown E10v3

[EpicMango 10+ year member]

I am in a transition stage to a new box from my current 1.29 cubes @ 31hz box, and I'm trying to get the absolute maximum potential out of this subwoofer off of rated power (Rockford Fosgate R500X1D birthsheeted @ 641watts)

My car is a 99 civic sedan and the sub is just in the trunk fired towards trunk lid. I listen to mostly EDM and hip hop but I also do listen to enough death metal to the point where I'd still like to hear the separation in the double kicks. My main emphasis however is digging out the lows so I'm thinking a tuning frequency somewhere between 29-32hz because I still wanna preserve that SPL

What would you guys think is the optimal airspace my E10v3 would need to accomplish this?

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[LosIsATool 5,000+ posts]

It's not just about airspace and tune. There are port ratios that give more bandwidth.

Also the 500x1s birth sheet is a dynamic test. Don't look at that.

 

[EpicMango 10+ year member]

I'm using a 4 inch flared Aeroport from PartsExpress if that helps. I think clamped I was getting like 200 watts on music lol