Wanna try a 4th order

[ehall8702]

So ive built a few hundred enclosures in the last 27 years of installing, never have i attempted a 4th order. Just casually reading , my newest sub ( avatar stu 12) seems to be a good canadite for this. Havent looked yet but thinj the qts of my xr 12 is .4 which if i understand right may be a good one to. try also. Ive read 2:1 ratio anf the hell woth ratio also. I wouldnt mind trying something musical for my XR i could put in my wifes yukon tonreplace the old 3xl in a belva prefab (tuned to like mid 40s), i can hardly tell qhen she turns the bass knob up! She needs more ummph and i wamma try building something different at the same time. Always been a solid slot port guy just nc they do thier job and have thier own structural support built in. 

Questions are 

1 will the XR d2 be a good sub to start with

2 would the STU 12 d1 be better

3 what is ideal port area and sealed to ported ratio 

 

 

[pnutz37]

On 11/14/2023 at 7:27 PM, ehall8702 said:

So ive built a few hundred enclosures in the last 27 years of installing, never have i attempted a 4th order. Just casually reading , my newest sub ( avatar stu 12) seems to be a good canadite for this. Havent looked yet but thinj the qts of my xr 12 is .4 which if i understand right may be a good one to. try also. Ive read 2:1 ratio anf the hell woth ratio also. I wouldnt mind trying something musical for my XR i could put in my wifes yukon tonreplace the old 3xl in a belva prefab (tuned to like mid 40s), i can hardly tell qhen she turns the bass knob up! She needs more ummph and i wamma try building something different at the same time. Always been a solid slot port guy just nc they do thier job and have thier own structural support built in. 

Questions are 

1 will the XR d2 be a good sub to start with

2 would the STU 12 d1 be better

3 what is ideal port area and sealed to ported ratio 

 

 

I haven't looked into their sub parameters to see if they are good. I can only suggest to get someone to design an enclosure for you (or go with a program that can give you data back on how the box will theoretically perform). I have a tough time when people go with general port areas and ratios. Just because it plays doesn't mean it's right or optimal.