what would you set the sub at ? in hz
the box is ported but need to look at HZ

 

I have usually had pretty good luck tuning around 30-35hz.

 

if i have 2 ports 1set low and the #2port set higher so if i need to ie a show but that will eat up my room in a small box

 

Dude...seriously...Take 5 minutes and use proper english, or no-one is going to post.

We can't answer your questions if we cant decipher your code.

 

sorrey i have my son in my arms and he has a cold .it is hard to wright this way and he was nice to give me that cold !!!!!!!!!!!!!!!!!!

 

You put the crossover point where it needs to be! It is often system/ car unique. A set of mids that go low and sonically match well with the woofer a Xover point of maybe 50 Hz as long as there isn’t cancellation in the crossover region. For another system with either a strong midbass or a weak midbass a crossover of 80 or 120 Hz may be appropriate.

Some cars can be very problematic with freq response. I have been finding a lot of issues with peaks at 50 Hz (ported subs), the 100 Hz region (xover) and overall suckout at 200 Hz too.

 

the sub i have is a focal 27h , mids are focal 165k2ps and the tw are focal nt52.i do not know what the crossover is set at . but i was looking at some thing like seting the sub at 35hz-46hz .the box that i have i need to fill it to fined out the size .i think it is in the 30-40L size .

 

I think, oh, about 2 or 3 threads ago, someone wisely suggested that you measure the box, before asking any more questions.

How high is up?

 

the box is 34L - sub

 

3" port 9" long, should be OK.
You'll need a SS Filter as power handling drops to 65 watts below 28Hz.

I think you'd really be better off sealed with that box.