I recently had a parasitic resonance develop in my door panel so I took it off to address the issue. The Anarchy is a pretty potent driver. One thing I've noticed lately is talk of needing a big amplifier for these to compensate for the fact that they are 8ohm drivers. It occurred to me that I should post a video of mine running off of a Sony XM-450G. For those unfamiliar, it's a four channel rated to do 50w/ch at 4ohm. Two channels for the Anarchys, two channels for my 3/4" Vifa tweets. The first video is solely the midbass drivers and their output, no subwoofer. Toward the end of the first horribly recorded video, you can hear a frequency that isn't as strong as the rest... this is where my sub comes in. The subwoofer is in use for the second horribly recorded video. I'm truly sorry for the awful quality but you will get the idea if you put on a good pair of bottom-heavy headphones.
