I know there are other threads about this but they are kinda old and I wanted to give my own personal review. I got my 212 cab used from a guy on the HCBF for a decent( ) price!!!! As i was messing with my setup I broke one of the 1/4 jacks on the input panel. I let it go for a couple of days but could not get over having one of my 1/4's messed up so I called Dave at Avatar to get a replacement. They told me about the new crossover that they were selling to upgrade the old cabs. I told them that I was not the original buyer and I got the cab used. It did not matter and I could have one on my doorstep for $30 bucks. I did it and it came yesterday. I played yesterday evening at a church service and what I have noticed about the 212 is that the cab is really oud but the mids seem to be a little lost. Not as pronounced as my 210 but more than my 15. I guess what they say is true you get the best of both worlds. Anyway I hook up the crossover after service and waited with anticipation to hear the difference. One difference is the actual plate. The new one has a better attenuator and it has two caps and two resistors. The old one had just one cap hot glued to the panel. After switching them out I turn on my amp and wow!!!! I am blown away with how the mids are so pronounced and the tweeter and speakers no longer sound seperated. They sound as one. The hiss has decreased and I can turn the volume up on the tweeter to over half and get some incredible tone. Anyone with an Avatar cab pre new crossover should really consider getting this. I also have the Delta 210 and the SB112 and will be getting the crossover for both of them. Especially the 210 because it is so old it does not even have the speak on connection which I am going to need when I get my Kustom Groovebass 1200 next week. Has anyone else done the crossover mod and what have you experienced?