Summary: I just purchased this item and with in the first week it Blew. It's a great price but you get what you pay for I had been running my amp on low and had almost finished the four hour run time before increasing the amp amount and it blew. I'm highly disappointed with this product
Conclusion: I've been installing car audio for over 10 years. I put this sub in the stock box of my Tahoe and powered it with a Kenwood amp giving it 150 watts RMS @ 4ohms. This sub blew while I was setting the gain. Seriously, it was less than than 60 seconds playing a 60hz test tone.