I had sold it previously. The guy that had it said it sounded like rubbing noise and shipped it back and I gave him a refund. Basically that is all the information that I have on why I would think it needs one. I ran it on a buddies amp and it did fine in free air... so I am not 100% if it actaully does need a recone or not, I don't have time to test it with a mulimeter either. I just basically gotta get some money to pay for tuition.