I'm selling a brand new Power Acoustik 1800. I bought it to power my 13w7, but just found out that I can only wire it to .75 or 3ohms. At 3 I'll only be getting about 800 watts, and at .75, I don't want to take a chance with that, so I'm forced to sell or trade. I have one reference, cred118833, if he's not enough my ebay user name is dapinckney(check my feedback)!!!!! I'm asking $200 shipped or a trade of either the right sub amp or a 4 channel amp that puts out no more than 125x4 @ 2ohms, got some infinity's I'm pushing. Shipped soon as payment received, UPS is less than a mile away from my house. Will email tracking number. Thanks, David.