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117 Posts
Hey everyone, I've been out the loop for a few years now so I don't know whats hot these days. I originally was trying to talk my buddy into building a sub rather than buying a Polk sub. Then I stumbled upon the closeout on the SI HT 18's and started thinking maybe it's time I try something new
I currently have 2 SDX 15's in passive radiator boxes running of a single EP2500 which is honestly more than I need but that hasn't stopped any of us before LOL. So Since the SDX's are dual 2's I am getting about 600w to each sub and can't get the full potential out of the EP2500. I was thinking I could run 4 SI HT 18's in a couple dual opposed boxes and give each sub about 500w, but I really don't want to dump $800 into subs I don't need. I am more than willing to go with a pair though if they offer greater performance than what I currently have.
What do you guys think about 2 SI 18's vs the 2 SDX 15's? Is it a worthy upgrade?

I currently have 2 SDX 15's in passive radiator boxes running of a single EP2500 which is honestly more than I need but that hasn't stopped any of us before LOL. So Since the SDX's are dual 2's I am getting about 600w to each sub and can't get the full potential out of the EP2500. I was thinking I could run 4 SI HT 18's in a couple dual opposed boxes and give each sub about 500w, but I really don't want to dump $800 into subs I don't need. I am more than willing to go with a pair though if they offer greater performance than what I currently have.
What do you guys think about 2 SI 18's vs the 2 SDX 15's? Is it a worthy upgrade?