Single Driver, High Power, Enclosure suggestions.

[Cashdollar2009]

Different title to maybe hone some more answers...

15" DC Audio Level 4xl

Crescendo 3KWP @ .5-ohms (rated 4,030rms @ 13.8v @ .5-ohms)

Right now in my old box: 3.8ft^3 tuned to 34hz

I feel the driver is unloading horribly and sounds like poo. Before the recone it was seeing around 1.8k in this enclosure and sounded nice. What are some suggestions for box size when looking to run a little over 3k in power?

Thanks in advance!

[Playa Named Joe]

A smaller box if your running more power

[Cashdollar2009]

A smaller box if your running more power

I understand that. I need to compensate for the loading and unloading. I am just hoping some people with some experience with this, 15"s especially, could lead me in the right direction. Would 3 cubes seem good? Like I said before, I've been flipping couch cushions all day and can't find a few extra hundred bucks laying around to build 3 or 4 boxes to test, so i'd like a little help here.

[k3n12ock]

3 cubes, 36HZ would be cool. 60-65 sqin of port.

[Cashdollar2009]

My current box is 3.8 cubes at 34hz with 60in^2 of port. She peaks at 40hz. I'd still like to see a lot of the lows and sound good on some decaf stuff. Think a 32hz tuning would be horrible off of such power in around 3 cubes? I've just put some much time and effort into this build before the recone and decision to wire it down that I really want it to pay off in the end.

BTW, Cashdollar is my last name so no one assumes I just put that tag on my stuff. lol The gf wanted to help so I let her help with the name plate.

[fecupe2001]

Sub is bottoming out because you increased the power a lot and box is to big for that amount of power now, why building a new box??? get some 2x4 braces and shrink the internal space, that should fix your problem

[Cashdollar2009]

Hey Mr. Sexplorer himself. So you're saying to figure out measurements and try to shrink up about .8 cubes with bracing? Then that would effect my tuning wouldn't it?

[fecupe2001]

hahaha mr sexplorer!!! Well, i can help you on this, but first, are you 100% sure it´s 3.8 cubic feet after displacement??? remember that, shrinkin the box would raise your tuning, also, your port would become from 15.7 SQ per cubic feet to 20 SQ per cubic feet, you now have a lot of power so port area shouldn´t be a problem for you, but, if adding more lenght to the port to get a low tuning is a problem for you, you can shrink the port area also...

I would do this: shrink the box 0.6 cubic feet and get the port area to 50 SQ, this would give you 15.63 SQ per cubic feet with a 32 hz tuning

[Cashdollar2009]

Snap, I guess it's 3.9. Thank you for the insight and actual thought processing fecupe2001! Okay so at 3.8 I would be shrinking it to 3.2. So now I would want to look into 2x4 bracing to get about .7 cubes of displacement.

Now with the tuning, how do you sir propose I change the port area? (assuming you mean without busting the box apart)

[fecupe2001]

haha you are welcome bro, You know what?? just start getting the 2x4 in there until you are satisfied with how it plays, but yes i would shoot 3.2 - 3.4 cubic feet to play nice, then you go to the port area and start playing with it if it needed, i guess you will because the tuning would raise...