Everyone needs spinners on their subwoofer, right? This sub hits a lot harder than most imagine, due to it’ efficient design. It bounces the audio off the back of the car, allowing a longer wavelength in the cabin, producing more low end without the added weight. #audionerd
I later added a three-way switch (on-off-on constant) for the grill for car shows, etc. 
Spinning Subwoofer Grill
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What a great article share. A great contribution especially for someone looking forward to buying a car subwoofer, amplifier and enclosure. If anybody wants to install a new one, this is the most effective share, that will be very helpful for best choice. Thanks a lot for the post.