PDA

View Full Version : need designs for box



Spectrum
08-19-2008, 04:57 PM
i have two 15" L7's and i am wanting a 10 cu ft ported box tuned at 35 hz designed...the biggest it can be is 54x27x21(my back seats are laid down)...dont worry i dont want anything for free lol

cycloneman
08-19-2008, 05:17 PM
What kind of car?
Which way do you want the subs and port firing?

Spectrum
08-19-2008, 06:07 PM
it is an 03 f150 supercrew...i want the ports firing up from the back of the box(or out the front if it is too hard up) and the subs facing the front but angled towards the roof

mcsoul
08-19-2008, 06:15 PM
External dimensions:
WxHxD
47x24x19
.75 MDF
Add a second .75" front face
2 forward facing 6" dia ports 7.8" long each
9.98 cu ft @ 35Hz (accounting for port volume)
10.38 cuft gross.

Make sure you add brackets to screw the box
down. It will be top heavy and kill you in a head on.

Spectrum
08-19-2008, 06:34 PM
External dimensions:
WxHxD
47x24x19
.75 MDF
Add a second .75" front face
2 forward facing 6" dia ports 7.8" long each
9.98 cu ft @ 35Hz (accounting for port volume)
10.38 cuft gross.

Make sure you add brackets to screw the box
down. It will be top heavy and kill you in a head on.

wow that was fast...thanks alot i mean it but...and i know its my fault...i am wanting slot ports...if you dont want to figure that out then thats fine...sorry

galacticmonkey
08-19-2008, 06:37 PM
I can do a design for $15. Full sketchup showing steps of construction. Will be designed with Bass Box Pro.

Ive done quite a few designs for people. PM me if Interested.

mcsoul
08-19-2008, 06:41 PM
...

Buck
08-19-2008, 06:42 PM
contact dude in my sig

Spectrum
08-19-2008, 06:50 PM
External dimensions:
WxHxD
47.75x24x19
.75 MDF
Add a second .75" front face
on the left or right add a 4" x 22.5" (box hight) vent port 9.71" deep
10.03 ish cu ft @ 35Hz (accounting for port volume)
10.37 cuft gross.

Make sure you add brackets to screw the box
down. It will be top heavy and kill you in a head on.

Mcsoul i cant thank you enough i would gladly send you some $$ for you time if you want...thanks alot

buck: i already did he cant atm

mcsoul
08-19-2008, 06:55 PM
This is free, no warranty expressed or implied :D

mcsoul
08-19-2008, 07:00 PM
HA HA!! Wait it's F-ed up, need to recalculate.

mcsoul
08-19-2008, 07:03 PM
Make the vent 10" deep, not 9.71;
your net volume will be 9.868 after
port displacement, but not after woofer
displacement. Do you know what your
L7's displace?

JB513
08-19-2008, 07:12 PM
Mcsoul i cant thank you enough i would gladly send you some $$ for you time if you want...thanks alot

buck: i already did he cant atm

If he doesn't want it I do!!:veryhapp:

mcsoul
08-19-2008, 07:17 PM
External dimensions:
WxHxD
48x25x19
.75 MDF
Add a second .75" front face (this will make the box 19.75" deep)
on the left or right add a 4" x 22.5" (box hight) vent port 9.71" deep
10.05 ish cu ft @ 35Hz (accounting for port volume)
10.88 cuft gross.

Sorry, back to 9.71"
used .19 as each woofer's disp (it's a guess)
the port displacement is .505

woofer + port .885
box disp 10.888

Edit:

You know what, this (my)design is not structurally sound.
It needs internal bracing because of the front face not
going all the way across (due to the vent). That internal
bracing needs to be designed by a pro.

The round port box would be a lot easier to build.

Spectrum
08-19-2008, 08:52 PM
External dimensions:
WxHxD
48x25x19
.75 MDF
Add a second .75" front face (this will make the box 19.75" deep)
on the left or right add a 4" x 22.5" (box hight) vent port 9.71" deep
10.05 ish cu ft @ 35Hz (accounting for port volume)
10.88 cuft gross.

Sorry, back to 9.71"
used .19 as each woofer's disp (it's a guess)
the port displacement is .505

woofer + port .885
box disp 10.888

Edit:

You know what, this (my)design is not structurally sound.
It needs internal bracing because of the front face not
going all the way across (due to the vent). That internal
bracing needs to be designed by a pro.

The round port box would be a lot easier to build.

i had already planned on putting bracing in...it would look like a triangle...i am a carpenter and i know how to brace things ;)

Spectrum
08-19-2008, 08:54 PM
does the port need to be L shaped? or just straight back

mcsoul
08-19-2008, 09:53 PM
Just straight back

Spectrum
08-19-2008, 10:29 PM
k thanks

mcsoul
08-20-2008, 11:54 AM
4" wide by box hight for 9.71 inches.
No L needed. An L would only be needed
if the port reached the back of the box.


I found this, it has box designs and full t/s
parameters for L7.

http://www.kicker.co.nz/pdf/Subs/L7/Solobaric%20L7%20Technical%20Manual%2007.pdf

Spectrum
08-21-2008, 05:07 PM
i built the box and it sounds great! thanks!