I own a car audio sub, an infinity perfect 12", dual 4ohm coils, so 8ohm or 2ohm driver. Should I look into building this into a home sub? Because if I can get a good amp for it and have one of the guys at my shop build it, it would be cheaper than buying a brand new sub. Would this be a bad idea? I have a big room, would I be able to fill it ok with good clean sound with this?