The closer you are to speakers, the more of bass and lower midrange you hear from them. Think of an extreme case: headphones. When you listen to them on your ears, you hear bass, but if you listen far from them, you'll only hear treble. Also, in a small room the bass and lower midrange level is increased by boundary gain, and this is more so if you place speakers close to walls and on a rack or something. This is why you need a less amount of baffle step compensation. You can achieve this by changing a few components in my crossover schematic. The necessary changes are shown in the figure under "Reduced baffle step compensation option." Let me know if you have any questions.