45's In A Box

[fast85_gt]

is it gonna help any to put 45's in a box tuned to 32hz i just need to pick up a couple 10th to brake a 150.xx also my box in 9.99 cubes gross and around 8 cubes net after all dissplacments port is 100sqin 4"x25" and 21.5"deep if i was to take 2" of my port what will my tuning be say it was 19.5" please help

[Gotz1lung]

It depends on the bracing you currently have id say. Id does help with airflow alot tho. Think of a car exhaust, if its got smooth bends the air flows better than the crinkle bent crap from Midas, same inside your box, Squared edges hinder smooth flow.

You could pick up a tenth or 2 id guess if your box flexs alot, if the box is flexing, the pressure inside isnt exiting as forcefully as it could.

[HHR Ed]

How many of what size subs?

The angles may hurt in some setups, or do nothing.

What can help depending on your cone area is reducing box volume and shortening the port.

[fast85_gt]

It depends on the bracing you currently have id say. Id does help with airflow alot tho. Think of a car exhaust, if its got smooth bends the air flows better than the crinkle bent crap from Midas, same inside your box, Squared edges hinder smooth flow.

You could pick up a tenth or 2 id guess if your box flexs alot, if the box is flexing, the pressure inside isnt exiting as forcefully as it could.

i would like to think i have 0 flex the box is braced good and is 1 1/2 all around but can you tell me if making the port a littel shorter will help to get me around 35hx thanks for your reply

[fast85_gt]

How many of what size subs?

The angles may hurt in some setups, or do nothing.

What can help depending on your cone area is reducing box volume and shortening the port.

ed they are treo ssx 18" x2 with 2 rdaudio 3250.1's if that helps

[matt402]

remember that 45s will take some airspace out the box, but will help the air flow.

if u make the port shorter it will tune it higher.

[fast85_gt]

sent you a pm ed sorry thought you was gone

Edited May 27, 2009 by fast85_gt

[HHR Ed]

I can let you in on a little secret of mine.

Use clay, put it in the corners of the box building them out at a certain angle,

add just a little at first, then test.

Then add some more and test again,

then add more and test again.

and so on until you have good data to go on.

Then change the angle and repeat.

If something works, leave the clay in and fiberglass over it.

If it hurts you, simply remove the clay.

[fast85_gt]

I can let you in on a little secret of mine.

Use clay, put it in the corners of the box building them out at a certain angle,

add just a little at first, then test.

Then add some more and test again,

then add more and test again.

and so on until you have good data to go on.

Then change the angle and repeat.

If something works, leave the clay in and fiberglass over it.

If it hurts you, simply remove the clay.

ok sounds good but i have very littel time on the tl with the specs on the box and my eqiment i listed what whould you do

[HHR Ed]

PM replied, do that, lol