One of the most important functions of the two-loudspeaker system is to realize stereo playback in a specific region. Through sending the ipsilateral channel of stereo signals to the corresponding ear of the listener. The fundamental challenge is to cancel the crosstalk of signals from two loudspeakers. Usually, crosstalk cancellation filter is employed based on the inverse of the transfer matrix from sources to ears.Nevertheless, common used crosstalk cancellation will cause severe spectral coloration which brings many negative effects, e.g. weakening system robustness, shrinking sweet spot area and losing considerable dynamic range. Therefore， two different regularization methods based on measured transfer functions are investigated. Experiments are carried out to compare the integrated performance of the spectral coloration and the crosstalk cancellation performance. Interaural time difference (ITD) is also utilized to validate the efficacy of the improved stereo sound reproduction system.