Hi Guys, I recently got a Servo 15 - about 3 months ago. I got a Yamaha AZ2. I'm running two QED 4S to the X-30 controller. I'm also using a QED SR-SUB cable to the Servo. Initially I was totally blown away by the monster. In fact I thought it was too powerfull. I couldn't put it past 30-40% without causing serious vibrations in the room. Played several scenes over and over to family and friends so I got to know the feel of them. Just recently noticed that I have to turn it up past 50% to really feel the impact and even then there is a lack of slam. The low frequencies are still there. The couch stills moves and you feel it but it's not the same. Take SW-EP2 the asteriod scene. When Obiwan arrives there used to be this big slam in the room. It's gone now and I've had some friends confirm it as I thought it was just me. I've heard and read on this forum that a sub does blend in after a while but this is almost too much. Just wanted to know if anyone has gone through the same thing. Could also do with some suggestions please. Thanks guys.