Fi BL 15" Box Design

[Maddenkid2011 3]

Would using the SSA Icon 15" small ported design work for my BL?

Icon 15" small ported design

How would i go about changing the tuning to 33-35 Hz?

[Maddenkid2011 3]

Anybody?

[Bearlokey13 2]

That enclosure should work just fine, tuned for the lows.

[icy_chris 18]

to tune it higher you can shorten the port leghth but i'm not 100% on how much id say around 2"-2.5"

[bassman3 0]

to tune it higher you can shorten the port leghth but i'm not 100% on how much id say around 2"-2.5"

Correct. If you wanted to tune a tad higher, i would do 2" longer than what it shows in the diagram and you would be fine.

[icy_chris 18]

to tune it higher you can shorten the port leghth but i'm not 100% on how much id say around 2"-2.5"

Correct. If you wanted to tune a tad higher, i would do 2" longer than what it shows in the diagram and you would be fine.

wouldn't the longer the port the lower the tune ??? you mean shorten the port 2" shound raise the tune aprox 2-3 hrz

Edited July 15, 2010 by icy_chris

[bassman3 0]

to tune it higher you can shorten the port leghth but i'm not 100% on how much id say around 2"-2.5"

Correct. If you wanted to tune a tad higher, i would do 2" longer than what it shows in the diagram and you would be fine.

wouldn't the longer the port the lower the tune ??? you men shorten the port 2" shound raise the tune aprox 2-3 hrz

Yep, thanks for the correction. 2" SHORTER will raise you 1.5-2 hz

[icy_chris 18]

no problem

[Maddenkid2011 3]

Thanks, I'm also gonna have to make up for the subs different displacements right? i imagine the cubes on the Icon box is with the icons displacement

[icy_chris 18]

yes the more your sub takes up the higher the tune will go

[icy_chris 18]

i'm not sure on how much it will affect the tunning tho

[Maddenkid2011 3]

How do i figure out how the tuning will be affected?

[icy_chris 18]

it's only different by0.02 so it's going to affect it by probly .5 hz

[icy_chris 18]

so if you take 2" off the port and with the bl the tuning will ba really close to 33-34hz

[Maddenkid2011 3]

so if you take 2" off the port and with the bl the tuning will ba really close to 33-34hz

Thanks for the help man

[NB50 206]

Don't take 2" off the port it won't change that much, you need to take more like 15" off to get the enclosure to 3.52ft^3 @ 33hz.

[Maddenkid2011 3]

Don't take 2" off the port it won't change that much, you need to take more like 15" off to get the enclosure to 3.52ft^3 @ 33hz.

So instead of 20.5 inches of port length, use 5ish?

[NB50 206]

Everything the same just change the piece in the picture to the length shown.

[Maddenkid2011 3]

Thanks a ton

Is the double baffle really necessary? and what if im not able to do the 45's?

Whats gonna be affected?

[NB50 206]

For a BL i would use a double baffle. Not doing the 45's will change the enclosure entirely, from box volume to port length, which both will have an effect on tuning.

[Maddenkid2011 3]

Do they just help durability? And will i just have to lengthen the port length to make up for the 45's area?

[Maddenkid2011 3]

bump

[Maddenkid2011 3]

If 1 sheet of 3/4" MDF is 48x96, will I need more than 1 sheet?

Just tryin to save a ridiculous $30

[Aaron Clinton 2,372]

Do they just help durability? And will i just have to lengthen the port length to make up for the 45's area?

I would suggest finding a way to make them.

[imhungnurnot 9]

How do i figure out how the tuning will be affected?

Figure you net volume and plug it into a calculator and see what it is.. If you want it to be tuned a little higher, take a inch or two off of the port then. Now recalculate the net volume (will be larger than before), and plug it into a calculator. If its tuned too high for your liking, do the same process, just take off less port length in the beginning