same as the mayhem 900 series alphasoniks. and dd designed those for audiobahn, well the first series. i have had both the flame and the first ones. i'll snatch them for that price. some people dont know what they are they just think omg audiobahn its gonna blow with half the power. but feed them 1500 rms a piece and see if they dont do theier job. they'll take more than 2500 rms i know from experience dude had them in a talon breaking 155s with a 1500 watt db drive on each. they were my subs lol he just kept them for a couple of experiments