87regal

You are asking an impossible question. Every alignment has its pros and cons but without knowing the speaker, space, power, vehicle , and listening goals no one can even begin to answer you.

Check fault line, their kit is an "upgrade".

What kind of space are you working with? IMO size should only be based on volume available, and mounting options.

I don't think PSI has type r recones. Springfield speaker and fault line customs has kits.

There is also a chart on the12volt that is pretty easy to read

Egg shape? That's what I get for skipping some of the middle posts haha... But if there is no curved surface it would still be practical.

its actually pretty easy, if you make 1 side in sketch up, then click it, entity info, it will give you the EXACT sq in of the piece, then multiply the side by the width and divide by 1728 and you're done. either that or some 8th grade geometry.

If you could look at your impedance profile it might answer this question.(maybe less box rise/more power)

I have seen people with that kind of setup put a board right behind the seals to seal it off. That would stop some of the rear waves from entering the cabin(cancellation).

Clipping is something that happens to the signal. Distortion is what you can hear, which can be caused by clipping.

Hifonics BXI1206D on a pair of CVR12s

It was actually a legitimate question. Don't have any pic, but my buddy has a 15" in a PWK designed 4th order...I was very surprised he did not get a 6th, but it works well.

the hdc sub simply performs better when its not sealed. both its t/s parameters and first hand experience point that out. Wasn't calling BS or anything , just wanted to hear if anyone has had success running one 4th order.

To the people saying 6th is what that subs needs...are you purely basing this on the subs EBP, or from experience? I have seen some HDCs work well in 4th.

A resistor(resistance) is for DC , a voice coil gets AC so it is an inductor(inductance).