No one else in the room and I literally laughed out loud when I read that. Look, you don't understand why I made that statement so it is only fair that you listen and try and understand what I am talking about. Amplifiers are going to source current into a specified load at a specified voltage, as long as the power supply can keep up. When you take any amplifier that has a reliable rating of producing a sine wave (The standard waveform for power ratings) at a set voltage and then you have it produce a different waveform (like a square wave) it produces drastically more power, sometimes almost double. And you don't have to use just a square wave, it is an example, much music is compressed enough to almost do the same thing. So your 2.5Kw amplifier is capable of producing 5Kw of some type of power (mostly garbage) and your subwoofer will have to find a way of dealing with it if somehow all the power makes it to the voicecoil. This is worst case scenario, but it can happen. It happens on this site all the time, and user want to cry foul about a manufacturer when they simply overpowered and thermally cooked thier drivers. You should do your homework first, it will help you from making costly mistakes.