[Baseball0684]

I used to have a few of them RE8's and in my experience in about .6-.7 cf ported each it took around 250 watts rms each to bottom them out playin music. I did burp them a couple times with little over 500rms each and they survived fine but i wouldnt run near that much daily/music listenin. There are a lot of variables (box type and size, gain on amp, etc.) that will effect it. They are good little speakers.