IF sub was blown though coils wouldn't be reading perfect, all of them on both subs read exactly 2.2ohm. No scratch or rub on the subs, nothing they basically look brand new. The amplifier is supposidly a month old but the old owner was running it at .5 ohm and i dont think it even supports .5 ohm it's a Alphard Machete 2000.1... funny enough i been running my 18 on it and its been making weird noises too but I just reconed the 18 so I figured it was a **** recone job since it was my first recone job, maybe the amp is screwed. How can I tell if the amplifiers bad? I have a Wolfram 4500.1 I guess I could test the subs on but I don't have my electrical and **** hooked up for that.