Well I purchased a bundle including a 15" sub in the enclosure with amp and amp wire. The amp had no output when I opened at the installation place. I reached out to Customer Service about it and told them the amp was "dead out the box" and i got a response saying to send the Subwoofer back. I had to send up a following email stating what I previously stated that it was the amp and nothing else was wrong. After that I just got a link on how to return the defective product. I ordered a 2000w monoblock amp Skar brand of AMAZON because the installer said i could go bigger than the 1500w monoblock that the bundle came with and it arrived in 2 days. I've sent the 1500w one back waiting to hear something about that but besides that now that I have an amp everything is working nicely. Customer Service goes along way...