MG1.6 crossover upgrade merits.

Do it!! I did a full crossover over-haul on my 3.6's and it has yielded HUGE improvements. Here is a picture of them, and here is yet another angle. I have a whole lot more then a few hundred dollars into mine and it is worth it. As it stands my 3.6's outperform every 20R I have heard, I have not heard 20.1's set up properly so I won't make any statements, but I suspect this will outperform the 20.1's in many area's. The soundstage is even bigger, more depth, texture, much better dynamic's, lower freq. response(very noticeable), and things just sound natural(even compared to before, which I thought was really good). I also rewired the speakers internally and bypassed all of the factory termination. Search the Audio Asylum there is a lot of information over there on this.

Just wait for them to break in! Your in for a real surprise, at just how much better they'll get. Most everyone laughes when I get excited about the level of improvement I claim was accomplished, and that very few speakers in the world can do what these are doing. The improvements are not subtle in the least and after break in it rounds all the rough edges out- you'll get even better bass, soundstage will just explode and become huge, dynamics(both micro and macro) will be startling at higher volumes. Even the inherent short comings of the speakers will become less noticeable- they will be more accurate at lower volumes, they will be able to play louder, dynamics become much better and you'll get a lot more bass and what you get will be more natural- its not going to have the slam of wilson's, they're not going to be able to recover low level details like soundlabs and they won't be able to throw sound at you like Avantgarde's- but they'll be a lot closer then they were before!

Good luck with the rest of your project.