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View Full Version : Need a box design, paypal available



01 S 10
04-18-2008, 12:20 PM
I am going to have a Soundsplinter RLP-18 that i need a new box for.

The space that i have available is 48" wide, 26" tall, 12" deep top and bottom. these are all max measurements, they can be less if needed.

I would like to have two slot ports on the each side of the box (front side). 1 port is ok if thats my only option for tuning to 28 hz. I cant seem to get what i want on RE enclosure designer.

this is something like i am looking for:

http://i203.photobucket.com/albums/aa249/my10on20s/untitled-2.jpg


can someone design a box like this tuned to 28 hz?

SPY
04-18-2008, 12:26 PM
what is the net vol you want to end up with?

01 S 10
04-18-2008, 12:29 PM
right around 5 cf (so it might be around 6 with port(s) but definetely 5 cf not including port

SPY
04-18-2008, 12:39 PM
Using your dim and a port 2.5"W x 24.5"H x 36.5"L (61.25 in^2 of port) You net 5.09 ft^3 before driver displacement tuned to 28hz

01 S 10
04-18-2008, 03:36 PM
is 61.25in^2 enough port area to hammer the lows with an 18"?

SPY
04-18-2008, 04:01 PM
To tune as low as you want and keep within your space requirements that is the most I could get. If you have a little more room to work with a little larger wouldn't hurt

galacticmonkey
04-18-2008, 04:04 PM
If youre interested in buying an enclosure design I could see what I can come up with. If you want, Ill design it, sketch it up. Then if you like it send $15 to me and Ill give you step by step pics and a cutsheet.

95seriesBMW
04-18-2008, 10:57 PM
28 hz is going to be super low, you could always do 30-32 hz and be able to go a little larger on port surface area. just a suggestion. :)

01 S 10
04-19-2008, 11:24 AM
28 hz is going to be super low, you could always do 30-32 hz and be able to go a little larger on port surface area. just a suggestion. :)

I want to absolutely kill the lows with the RLP-18, if 30hz will do it, then ill do that, but if not i want it as low as needed.

duece212
04-19-2008, 11:26 AM
Tuning higher will get you more output overall...but Mike's suggestions from soundsplinter seem to work really well for his drivers. I've used his suggestions for both rli-8's and an rlp-12 and it worked out good:

http://www.soundsplinter.com/rlp18_subwoofer_information.html

01 S 10
04-19-2008, 11:30 AM
Tuning higher will get you more output overall...but Mike's suggestions from soundsplinter seem to work really well for his drivers. I've used his suggestions for both rli-8's and an rlp-12 and it worked out good:

http://www.soundsplinter.com/rlp18_subwoofer_information.html

yeah i remember seeing that, it recommends 5.0 cu ft tuned to 27hz, that seems really low, but i could live with that :)

im just wondering how much square port area i would need...

01 S 10
04-19-2008, 11:49 AM
also, i was playing around with the RE Enclosure calculator, but the port is always in the same position and you cant adjust it..

heres a pic of what I came up with on RE and more of what I am looking for because of mounting depth.

http://i203.photobucket.com/albums/aa249/my10on20s/box4.jpg


Can someone design a box like the second one in the picture tuned to 28-30 hz netting around 5 cubes with my measurements... ( 46" wide, 25.5" tall, 12" deep <max measurements). Let me know if you can design a box like this

SPY
04-19-2008, 02:34 PM
I can do it like that but the problem is with your max dimensions and wanting to have 5 ft^3 net your port needs to be smaller to get the tuning you want.

More port area = more port length = more port displacement = less net vol.

70 in^2 would be a pretty good size for you I think but then you would need to make the port longer and you would only end up with about 4.5 ft^3 net.

01 S 10
04-19-2008, 06:06 PM
ok, i was wanting a 3" wide port, but if i could get away with a 2.5" wide port that would work also. I just didnt want a "too small" port.

SPY
04-20-2008, 12:37 PM
What about aero ports?

01 S 10
04-20-2008, 04:07 PM
i've never used them, but i am open to try it... what do you have in mind? will they be louder?

01 S 10
04-21-2008, 12:11 AM
This pic is a design i came up with in Paint. the first two use six 3" aero or PVC ports, whichever. the third uses two 6" areo or PVC ports.

Out of the three, which design would work better? I am debating on having the ports firing up or on the same plane as the sub. This will be in an ex. cab truck.

http://i203.photobucket.com/albums/aa249/my10on20s/untitled-4.jpg


I know that the exit of the ports should be as close to the sub on the outside as possible, thats why I am favoring the 3rd option with 2 6" ports that are a lil over 26" long