I would only run cabinets in series if they are totally the same, else the power distribution is f.....up
I don't see anyone replying on the point I stated above. Series connection between two cabs does only work ok if they are exactly the same. You can't e.g. run a 4ohm 112 and an 8 ohm 410 in series because they have a different impedanceresponse. Ofcourse you can, but the powerdistribution between the cabs will not be same as when you would wire them parallel.
To make it even worse, wiring drivers in series when they work around their Fs is not ok if you seek for the most accurate bassresponse. This is because the Fs (and thus the impedance response) is slightly different between each driver even when the factory has very good quality control. When wiring them parallel it's not a problem. But wiring them in series will because when e.g. one driver has a slightly lower impedance around it's Fs it wil suck up more energy so then there is less left for the next woofer with the slightly higher impedance. You can minimize the sideeffects when you give each driver a separate enclosure.
So actually a 410 or 810 are not the best designs when it comes to even powerdistribution between the drivers....
