Theaudiotweak...I think that in some cases changing the design of the crossover, (break frequencies, slopes) can yield better performance, but you need to know what you are doing, and be prepared to tweek in your new design. The original designer probably didn't get what he really wanted. He did the best he could within a budget.
It happens that I am even now in the midst of replacing the very simple crossover in MG1.6. In addition to using top quality inductor and capacitor I have chosen to change the filter break frequencies very slightly. In a nutshell, I will roll the LF panel off (electrically) at 205 Hz instead of 180Hz, and shift the HF pannel up by 100 Hz. My reasoning is that the speakers were surely designed for full range use, whereas I cross them over to a subwoofer system. Accordingly, I feel that the LF panel can handle slightly higher sounds without problem. Giving my theory a try makes the whole exercise more interesting, and it would be really easy to go back to the original L and C values if appropriate.
It happens that I am even now in the midst of replacing the very simple crossover in MG1.6. In addition to using top quality inductor and capacitor I have chosen to change the filter break frequencies very slightly. In a nutshell, I will roll the LF panel off (electrically) at 205 Hz instead of 180Hz, and shift the HF pannel up by 100 Hz. My reasoning is that the speakers were surely designed for full range use, whereas I cross them over to a subwoofer system. Accordingly, I feel that the LF panel can handle slightly higher sounds without problem. Giving my theory a try makes the whole exercise more interesting, and it would be really easy to go back to the original L and C values if appropriate.