The XBush Mark 2. A synergy/Unity horn of spherical proportions

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The sb acoustics mw19p only play from 90hz-500hz. So for the 'forth way' element, I built some stereo dual opposed subs using 4 alpine swr drivers in thick schedule 40 pressure pipe.
Can't remember if I covered them in my wooden snowmen thread?!
If you search i am sure I documented something on them.
I heartily recommend using subs in a dual opposed configuration, utterly cancels vibrations.
The subs are awesome and remove the strain from the sartori drivers of the heavy lifting.
 
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