Re: Inverted subs?
Like Zierbox said, they will produce more noise from the motor. It could actually be the same amount of noise but being inverted you'll notice it a lot more. I had an enclosure a couple years ago, it was four 8" subs inverted and four with the standard mounting and I definitely noticed more noise from the inverted subs. One other thing was I had to reverse the wiring on the inverted subs to get them to hit. Not sure if you have to do that if your inverting them all or that was just for my set up cause half were inverted.
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