Benefits of Alpine SWT-12S4 :
Above average power model, available at an affordable price.
Quite small size, which allows mounting in smaller cars.
It is delivered together with an amplifier and a series of accessories necessary for connection.
92dB audio sensitivity and 4ohm impedance, for quality sound in speakers.
Although it comes in a package with a lot of accessories (elastic mounting cords, protective frames for connectors, suitable screws, 20A fuses, RCA Line cable, etc.), the product is not accompanied by the cable needed to connect the subwoofer to the amplifier, which you will need to purchase separately before starting the installation.