Need a box design, paypal available

[01 S 10 10+ year member]

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:

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

Click to read more...

 

[SPY 5,000+ posts]

what is the net vol you want to end up with?

 

[01 S 10 10+ year member]

right around 5 cf (so it might be around 6 with port(s) but definetely 5 cf not including port

 

[SPY 5,000+ posts]

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 10+ year member]

is 61.25in^2 enough port area to hammer the lows with an 18"?

 

[SPY 5,000+ posts]

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 5,000+ posts]

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 10+ year member]

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. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[01 S 10 10+ year member]

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. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

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 5,000+ posts]

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 10+ year member]

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 //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

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

 

[01 S 10 10+ year member]

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.

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

 

[SPY 5,000+ posts]

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 10+ year member]

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 5,000+ posts]

What about aero ports?