Cab case for vertical stacking

Take a look at the line array hardware used for PA applications. Should work fine for you, no? Just build your cabs with the right mounting points and you'll be golden.

The QSC website has some pictures of their line array system on it that might get you started.

 

If you're using all the same cabs you can look into the interlocking corners, will stay stable pretty tall but a good pull on the guitar cord has quite a bit of leverage at 7-8 ft. Could try some kind of skids mounted to the bottom cab that protruded front and back and latched onto the bottom of the cab somehow to provide more front to back stability. Some type of shelving system would have to be held together with lynch pins or something to be broken down into a pile of sticks for transport or how would you haul it around? The idea would be to be able to set it up and tear it down without needing a toolbox otherwise you'd have to get to the gig early and stay late.

 

Before embarking on the line array route thoroughly investigate how line arrays work. Once you do you'll find that the vast majority of commercial muti-way cabs are not suited to line array use.

 

You can easily stack two Low-B2s vertically with a rack on top. If you want to add a third then I'd put the rack on the floor instead.

I wouldn't try four vertically without some sort of rig to hold them in place - however if you position them as in an 8x10" then you shouldn't experience comb filtering as the woofer centres are closer together than the wavelength of the frequency where they cease to provide useful output (~1kHz).

Alex

 

I'm sure Bill would recommend either building or buying systems designed specifically for line array use - or just not bothering - unless you research how line arrays work and what is required... and then begin to have an idea how you would meet your needs with your own design built around line array principles.

 

The main misconception about multi-way line arrays is that they're a bunch of point source cabs (that's what commercial electric bass cabs are) vertically stacked, where in truth a line arrayable cab is a line source in and of itself, so all that differs between using one and using ten is how high the array will go. Like this, for example:

Note how the HF horn extends vertically the full height of the cab. No commercial 2 way bass cabs have that feature. If you want to create a true line array you're pretty much limited to either DIY or some fairly expensive PA cabs,

 

Quickie brochure on Peavey's new Versarray system with some pictoral and specs for insight:

http://www.peavey.com/media/pdf/brochures/Versarray.pdf

Notice that each element in this system is used down to around 120 Hz, and then using an active crossover/SMS one has subwoofer handling the lower content. Typical of the concept with many quickie-rigging line arrays.

 

Or like this, one of Bill's designs.


And just at tad less expensive than that JBL.

 

How many Acme's do you plan to stack to get that high? Hopefully you have access to a portable nuclear reactor to power'em...

Lonnybass