I am going to be purchasing 3 A/V-2's and 2 A/V-1's for a 5.1 set-up. My problem is that the A/V-2's are a 4ohm speaker and the A/V-1's are 8ohm, this is making amp selection a little difficult because I would like to stay within the power recommendations. I have been in contact with Danny at GR and he has been very helpful. I would like to have all my speakers at 8ohms. I thought of putting the A/V-3's drivers in the A/V-2's cabs, this will give me an 8ohm speaker but I will loose a lot of bottom end extension, so how about a ported A/V-2 with the 16ohm drivers? The cab space is still smaller than the A/V-3 but it seems like porting would help return much of that lost bottom end. Have any of you tried this yet? Opinions?