6) Pick the right
3) Do you want one subwoofer or two? The number of subwoofers you place in your car depends on two key factors, the size of your ride (if you don’t have a lot of interior space, you will probably want only one subwoofer) and the type of music you enjoy. Fans of classical and heavy metal music can generally get by with just a single subwoofer, while fans of hip-hop and rap or techno may choose two in order to get the richest audio experience possible.
2) Work within your budget by determining how much you can afford to pay for your subwoofer system (and then sticking to it!). If you go into debt over your car audio system, you won’t enjoy it nearly as much.
4) Make sure the subwoofers are a good match for your speakers. Do your homework before purchasing your subwoofers to make sure that they will fit into the confines of your existing car audio speaker system.
Electric drill with bits for pre-drilling screw holes and driving screws
You have to measure the available dimension of your vehicle just before measuring the box so that you can figure out the availability of the space that the subwoofer will be put in and thru that it’s just to match in. Then make a sketch ahead of doing the last work, in this issue you can overview the output of your subwoofer boxes.