box for 1 L7 15"

[RickyFriery97]

ok heres some dimensions i drew up for a box im going to build for a friend of mine for one L7 15"

Using 3/4 MDF

Internal dimensions

L- 21"

W- 20"

H- 21"

Outer dimensions

L- 22.5"

W- 21.5"

H- 22.5"

Port

L- 14"

W- 3"

H- 12"

with my calculations it seems to be 4.6525 cubic feet after port and sub disp. tuned around 32 hz

this sound right to yal? thanks

[Sampsonite]

There really isn't enough port area there. I'd do at the very least 50 square inches of port area. I have mucho experience with l5's and l7's and I know they like a lot of port

also, your plans put you closer to 29hz than 32

[RickyFriery97]

How Many square inches do I have there??

What should I do with the port? Make it longer wider or taller?

I'm just now learning how to make a box and tune it so

It's kinda complicated :/

[Sampsonite]

How Many square inches do I have there??

What should I do with the port? Make it longer wider or taller?

I'm just now learning how to make a box and tune it so

It's kinda complicated :/

Right now you have 36. I would make the port 5 inches wide and 25 inches in length

[RickyFriery97]

How tall would you make it though?

I wanted to put the port along the bottom of the box under the sub?

And what would that put my tuning at?

Edit: ok how bout the port 5 inches high

12 inches wide and 25 inches long?

That's 60 square inches of port right?

What would the tuning be?

Around 32hz?

Edited November 12, 2010 by RickyFriery97

[AMI CUSTOMS]

For one L7 15, I would do 8 0 sq inches of port MAX, unless you aren't going to put shit on it for power. That sub needs between 5-6 cubes to get LOUD.

Edited November 12, 2010 by AMI CUSTOMS

[RickyFriery97]

The sub will be ran at 2 ohms on a hifonics amp I can't remember witch one though

Those dimensions put it right under 5 cubes

It's going in a trunk too

[RickyFriery97]

ok i was just with my friend and i was measured out his trunk and it was alot smaller then i thought...

my dimensions i have now are

outer dimensions

L- 16"

W- 30"

H- 16

comes out to 3.46766 cubes internal

any bigger and ill have to build it in the trunk and im not doing that..

not much room to play with and i want it ported

sub will be ran at two ohms on a hifonics brutus BRZ 2100.1D with specs are 1400watts at 2 ohm but the car is all stock electrical so it probally will be seein barley more then 1000watts

i want it ported with a slot port tuned no higher then 36hz

i was thinkin a port 10 inches wide and 5 inches high but how long??

sub facing towards the seats and port firing driver side

internal width is 28.5 inches

any help is appreciated

im still confused with tuning boxes but im getting there

Edited November 13, 2010 by RickyFriery97

[Yosip1115]

ok i was just with my friend and i was measured out his trunk and it was alot smaller then i thought...

my dimensions i have now are

outer dimensions

L- 16"

W- 30"

H- 16

comes out to 3.46766 cubes internal

any bigger and ill have to build it in the trunk and im not doing that..

not much room to play with and i want it ported

sub will be ran at two ohms on a hifonics brutus BRZ 2100.1D with specs are 1400watts at 2 ohm but the car is all stock electrical so it probally will be seein barley more then 1000watts

i want it ported with a slot port tuned no higher then 36hz

i was thinkin a port 10 inches wide and 5 inches high but how long??

sub facing towards the seats and port firing driver side

internal width is 28.5 inches

any help is appreciated

im still confused with tuning boxes but im getting there

If you have that little room for your L7, I recommend selling it and getting something that requires more like 4 cubic feet max instead of 6! I have one L5 in my truck in a 6 cubic foot box, and it SLAMS, check out my video if you want to. But the one thing I know about kickers is that they love their space. A single L7 in a 3 cubic foot box (ported) on about 1500 watts would get owned by a single L7 in a 6 cubic foot box on 950 watts... You will be disappointed if you decide to build such a small box for your sub.

[AMI CUSTOMS]

With those figures, 26 long for 36 hz and 30 long for 34, but with a port that long that is going to take away more net and make the box even way smaller. Cuz at 36 hz tuning you are at a 1.0 cube worth of port, so that brings your net cubes down to 2.4 without the sub. WAY too small, you would need a shit load of power to make it do anything. You should consider either selling the sub or making a sealed box that is 3.4 cubes.