15" sub for under $150 thats "made in usa" in my opinion well worth it. Other people review these subs as what they are, and in my opinion you get what you pay for. That being said, the w15k9d4 is a great buy!
“I have quite a lot of Rockville sound equipment. The main reason is that it doesn't cost a lot of money but in my opinion delivers the most bang for the buck. Their customer service support team is top notch and will answer any questions that you ask”