Do I connect subwoofer to positive or negative?
If you have an subwoofer enclosure, There will be positive and negative terminals. Black being negative while red is positive. Connect one side of negative speaker wire to the negative terminal on the sub box and the positive to the positive terminal.
Does you need amplifier for underseat subwoofer?
Underseat subwoofers don’t need a lot of power to put out sound. You may not even need an external amplifier to improve their sound. Some underseat subwoofers even come with built-in amplifiers for better sound.
Can you put a subwoofer under driver seat?
I recommend installing the subwoofer either under the driver’s seat or passenger’s seat, behind the rear bench in trucks, in the rear area of a hatchback, or even in the trunk.