Bandpass sub box

[gregbutts]

I need to build a bandpass box for a large open area. I will be using 2 JL 15W3V2. It needs to loud. Can any one help. Thanks

 

[Cal Weldon]

Why do you want a bandpass for a large open area? I've only ever heard them sound good in a car.

Cal

 

[RJ]

An open area calls for a bass reflex (ported)enclosures.
For a bass reflex design try the Dual-chambered;
http://www.diysubwoofers.org/prt/dual_chamber.htm

 

[Bill Fitzpatrick]

Grumpmoangrumblegroan

 

[RJ]

Ok, Bill grumpled on my ported box.
The only thing I would build for a large open area is a line-array.

 

[Ron E]

Well, it appears nobody here wants to help you, only one person asked you a question and the other suggestions are kind of useless. A double chanber reflex? A line array? grumblemoan? Why even waste time posting if it helps nobody?.

I myself am rather skeptical of posts like yours with no info in them because It seems all too aften they are cross posted on 50 different audio boards and never go anywhere. sometimes 10 different people chime in with good ideas and the OP decides to just use a "recommended enclosure".....

My suggestion is to download some program like WinISD pro, find the parameters for your woofers, enter them in and design a box for yourself. Bring your parameters and your proposed design here and see what happens - people are always more willing to critique than to spend valuable time doing it all for you.

 

[jleaman]

An open area calls for a bass reflex (ported)enclosures.
For a bass reflex design try the Dual-chambered;
http://www.diysubwoofers.org/prt/dual_chamber.htm

This design is the hardest to build.

Id stick to the band pass.. But why. ? are you using little power but want lots of bass or have tons of room for a huge box ?

 

[Bill Fitzpatrick]

Ok, Bill grumpled on my ported box.
The only thing I would build for a large open area is a line-array.

I didn't mean to; it was a misplaced grump.

Right on with the line array. BTW I like yours. It's red. You got balls. I'd like to see the finished product.

 

[gregbutts]

sub box

I have already tried several boxes and some we built were very loud. We built a dual 15 4th order that hit hard but they can't handle much power. I needed to know if anyone had a suggestion for anything different. I have tried sealed with the 15in and that didn't cut it. This guy want to be the loudest. I was also going to try the solo-x 18 do you have any input. Thanks for your reply.

 

[gregbutts]

sub box

I have all the power I need a QSC 3400 I just need to build a box to handle it. Thanks

 

[planet10]

If you want loud in a big room, the most effective way to do it is with a horn...

dave

 

[simon5]

If you only want extreme loudness then I recommend a ported box, a 6th order bass reflex box, or the best I think, the dual chamber bass reflex box, harder to build.

4th order can't beat these boxes in loudness department.
You could also try a basshorn if you have alot of space.

If you're considering the Solo-X 18 for a large space, you should look around, there's alot of alternatives. Ascendant Audio is currently selling all drivers at low prices, look for the Avalanche 18 at 275$.

 

[Circlomanen]

I would recomend an upscaled version of this one: Mine uses two 5½ inch woofers and it hits realy hard. I cannot imagine how a upscaled WO with two 15 inch woofers would hit. Probably painful!
http://www.decware.com/whorn.htm