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]

Originally posted by 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

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]

Originally posted by RJ
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]

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]

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