Basically I have been lurking around these boards for a few months and have been researching my next purchase. I am looking for a sub that hits really nice and low like 20hz. My question is do alot of companies lie about there specs? I seem to see alot of subs at best buy (yamaha yst315 for instance) that claim to hit around 20hz. My cousin owns a car stereo shop and they just started selling home audio so he doesnt know much yet. I auditioned the DCM subs that they carry and they sound good, but I am leary to purchase anything except svs after reading this board. Please someone help me out here I dont exactly have a ton of money, someone explain to me what the paper specs really mean.