The box design is straight from Alpine. The box is a little small but the port fixes that problem. Its bigger then it looks. I filled in most of the flex section with sound deadener

Alpine 10 Type-R

 

Damn John, you got Jenga goin on in the trunk. Seriously, sick work. I guess its safe to say that the m3 vs you is a no brainer...you def. have more skills than I do. im dying to see the finished product. How are those carbon fiber doors anyway????? Good fit?

 

I've play with a Type-R for about 6 months, 7 diffrent enclosers in the end ! Now the Type R has FS of 30 so what is the box tuned to ? Now although the FS is 30HZ We found they really didnt have very good lower frequency response and porting it didnt help in fact made it worse, we went for a slightly oversized sealed box in the end.
TBH i've NEVER heard of any design that made a ported box smaller ?? i mean you have port displacement for a start..
The bend in the port will help drop the port velocity noise though..

 

Dave- Thanks Dave. We try bro. Its gonna be sick when its complete. I can't wait to finish it. Its taking forever, im starting to hate sanding though..

X-Ruckus- We haven't finished the system yet so we have not retuned it since. But last years box sounded great and it was sealed.

 

oh yeah the door panels fit awesome Dave. I added a few clips to make the fitment a little tighter, but I recommend them to people.

 

 

I would have stuck with sealed , but it your system.

BTW those doors are a lovely bit of work (me want) have you considered move the tweets to the apillers though ?

 

I can't move them into the pillers because of my gauges

 

My car is so dirty... It makes me sick.... so much bondo dust....

 

how did you do the carbon fiber door panels?