Alpine W12S4 12" Bass-Series Subwoofer (4 Ohm) Micro Four-Thirds The motor is moving the

The motor is moving the platter and the bearing‘s lubrication is being worn off over time

100% metal body

It features convenient programmable automatic timed shut off and adjustable thermostat

which are operated with direct current

Flame effect can be operated with or without heat

Alpine W12S4 12" Bass-Series Subwoofer (4 Ohm) Micro Four-Thirds The motor is moving theThe W12S4 is for the car audio enthusiast to add powerful bass while keeping it budget friendly at the same time. The Bass Series subwoofers are engineered to be fun and loud in a budget friendly category by combining retro styling with enough efficiency to run on 250W RMS. An optimized magnet circuit allows more focused magnetism in the gap which results in improved efficiency, tighter bass control, and more output. 12 inch single 4 subwoofer