Re: Ported box with sloped back
You can do it with slot ports but round ports may be easier depeding on you dimensions and the angle of the slope.
2 RE Audio SR10 D4's in 2ft^3 tuned to 32.5hz
CDT Comps front, CDT Coaxials rear, MBQ DSC480
Diamond D312D2 in 2ft^3 tuned to 34hz powered by a Diamond D3400.2
2 Ascendant Audio Assasin 8's in 1.2ft^3 tuned to 40hz.
All in a red '04 Jeep Wrangler.