Whats the best way to hook up my 1800 watt 12" qpower sub to my 400x2 rockford fosgate amp

[Nita-Lynn]

Whats the best way to hook up my 1800 watt 12" qpower sub to my 400x2 rockford fosgate amp

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[Kickstand Premium Member]

Since you didn't provide model numbers it makes it hard
The only Qpower 12 I can find is rated at 1700 Max
The RMS on it is 450 (This is the number you want)
Its dual 4 ohm
I'm taking it your talking about the RF P400x2
Its ratings are
200x2 @2 ohms
125x2 @ 4 ohms
400x1 @ 4ohms bridged
Since its a 2 channel and your running dual 4 ohms you can't bridge it
That would put your final load at 2ohms which the amp cant do
You would have to run each coil off of each channel
So the best you can see is 125x2 @ 4ohms