Decided on the GM Kicker sub

[kobra357]

I absolutely think the knob adjustment makes this a must have for music enthusiasts. It really adds a lot 10/10.
For those who added a knob where did you put it?

 

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[TangRanger]

Installed today. Highly recommend. I tapped the speakers vs the sub wire. Sounds pretty damn good. Dips all in the up position with the knob adjustment.