Overview thumb|410px|right|Comparison of the magnitude response of 2 pole Butterworth and Linkwitz-Riley crossover filters. The summed output of the Butterworth filters has a +3dB peak at the crossover frequency.
oVervieW ThuMb|410pX|rIGht|coMparISoN of the magnitUde resPoNse of 2 pole buTterwoRth ANd linKwitZ-rileY CROSSoVEr filTErS. ThE suMMED ouTput of tHe butterworth filters has a +3Db peaK AT tHe CrossovER frEqUeNCy.