Since what I listen to most is alternative rock and speed metal I don’t require a huge sub woofer, what I require is to isolate the low frequency signal. The JVC KWAV61BT allows precisely for that. Just hook up this baby into the dedicated sub woofer output then Bob’s your uncle.  Polks will now only deal with mids and highs.

I installed it on my 2013 Versa, it is placed on the passenger side below the glove box area. It doesn’t draw much current so I tapped from a spare 20 amp acc fuse.

Sounds great for alternative rock and speed metal. Here’s a sample:

Product Link: http://amzn.to/2D9gtuh