Ok, bit silly since I just bought some Mackie MR8's, but I had a bid on some original version Event 20/20's on Trade Me (New Zealand online auction site) and nobody bid after me so now they're mine. Have to drive 6 hours in the weekend to pick them up but I don't even have a clue, like they're passive, 4 ohm impedence, how do I power them? Just a regular stereo amp? Do I have to match the impedence exactly? I have no idea, do you?