I have this unit now had roughtly 6 months, and I am completely satisfied with its possibility to reach. It works great in both sealed and ported enclosure. If Polk Audio SR 104-DVC - car subwoofer price strip your style, I recommend installing the drivers back into the field to the ultra-modern design to show the rear 90% of drivers! I seriously warn you in advance, however, that this driver is toast if the adrenaline happy too early. Let the coil and the spider are working properly, and the speaker will be a lot of abuse.

