To everyone who has replied, I do have a question for each and every one of you. Do you honestly think the OP will notice a difference between the JL Audio 1000/1 run at 4 ohms, that would cost him close to $1k authorized VERSUS the AudioQue 1200 run at 1 ohm that will cost him $229 from an authorized dealer?
For those of you touting quality, longevity, etc... The OP could literally burn through FOUR AudioQue amplifiers, each with a 2 year warranty, before he would reach the cost of ONE JL Audio 1000/1 with a 2 year warranty when purchased authorized.
To the OP, I hope you realize that your money is better spent on speakers and amplifiers that produce 85% of your musical content, i.e. your mids and highs, versus dropping major coin on your subwoofer amplifier!