I have a student (9 of them!) neighbour noise problem and (after trying everything else) have been retailating by using a Sunfire HRS-8 to blast base through my house wall. I just plug my ipod in with a suitable soundtrack and hit them with the base. I have just bought a DB Technologies Opera Sub 15, I rang DB before I bought it to check if I could just plug the ipod in and was told yes, however I only get a bit of disotrted sound from it and the Signal light is not illuminating. Can anyone help?