I have a venue with a pair of subs with dual Peavey Lowrider 1808-8 subs in each.
The box has been 'custom designed' and I have never come across a design like this in the past. It is essentially a forward firing ported design but one of the woofers is inverted and placed 4 inches further back than the other side, wired out of phase. The port exits through the centre between the 2 woofers and goes to full box height (21 inches, at a guess) and is about 3 inches wide and deep. (21x3x3 port, essentially) The box is roughly 21 x 21 x 42 inches in size. (I havent taken full measurements, just approximations)
It kind of seems to me the drivers are essentially located in free air with no real box tuning or loading. Perhaps I am wrong, not sure.
Is somebody able to tell me this is a tried and true design suitable for these woofers or somebody's science experiment. It has been working 'OK' for a few months but a couple of weeks ago the dj cooked a driver. While we were waiting for parts to arrive the other enclosure was pushed harder than normal and has also developed a rattly driver so more parts are coming.
I find it difficult to get a reasonable tune to this system so I am thinking of rebuilding the boxes to a more suitable and safer enclosure for these drivers.