On my Tama 14x22, I had a PS3. My new Mapex Saturn 18x22 came with a PS3. I put an Emad on the Saturn, and even with the small ring I kid you not, it took so much out of my Saturn's Kick that it made my Tama's 14x22 sound like a monster in comparison! I will say that it provided huge attack, but not much punch and almost no "boom". I normally mic my kick, and figured although acoustically it didn't sound great, it would probably sound good mic'd. Boy, was I wrong. I tried everything I could, including removing the small dampening ring, tuning differently, muffling and unmuffling the Emad and the reso head, but nothing seemed to improve the sound. I thought I was imagining it, but two days ago, I went back to the PS3, and Boom! I was not imagining it.
Someone told me it was because I didn't have the Evans reso head that the Emad is designed to work in concert with, and while that may be true, I wasn't about to go there, because in my experience, a reso head doesn't play THAT much of a factor in how a batter head sounds, although with today's technology that might be possible. Regardless, I will probably not play an Emad again anytime soon, but at least I now know how to reduce the output of kick drum, so if I ever need to for some tiny room, like a closet in a church or something, I'll know exactly what to do.
For punch, I take a rag about twice the size of a wash cloth (wash cloth doesn't work nearly as well), fold it so it's just about the same width as the ring on the PS3, and gaffer-tape it along the bottom of the batter head. I try to get 10-12% coverage, so I tape it along approx. 1/5 to 1/4 of the circumference. It seems to make ANY kick drum sound awesome. Depending upon how much resonance I want to accompany the punch, I apply the same principle to the reso head, sometimes more, sometimes less, sometimes not at all. Either way, the punch is great, and nothing I do to the reso head affects this. The nice thing with this technique is that it sounds good acoustically and mic'd, so no matter where you sit in the audience, it sounds good! ;-)
This also take away pedal flutter! ;-)
Incidentally, I just did this for the 18x22 Ludwig Element Birch kick at my church, and achieved the same result, even thought the Ludwig came with a very cheap version of the PS3, so I suspect this technique works with any single-ply head that doesn't have two much dampening to start out with.