This is the woofer itself. They will need to be mounted inside the subwoofer enclosure in order to operate properly. These types need to be powered with an external amplifier. They can range in sizes from 8 inches to 15 inches.
These types combine an amplifier and a subwoofer in an enclosure. Powered subwoofers do not take too much space in your vehicle. However, they
are limited in the amount of bass they produce.
Vehicle Specific Subwoofers
These types are designed to fit in space saving location in many cars, trucks, and SUVs. They are not the best choice if you are looking for a really big bass.
Check the RMS power. When checking the subwoofer power, make sure the amplifier can handle this amount of power. All subwoofers require vehicle amplifiers.
Subwoofers have a higher sensitivity rating. It requires less power to produce the same amount of sound unlike the model with the lower sensitivity rating.
The type of sound the subwoofer will produce depends on the type of enclosure that it is mounted in.
Number of Voice Coils
There are single and dual voice coils. Dual voice coils provide more flexibility when wiring sound systems.
Size of the Woofer
Do not only consider the size of the subwoofer. You should consider the power, sensitivity rating, and enclosure type. If you would like the system to play loud, low music, and you also have enough space, then choose the biggest subwoofer possible. Do not underestimate the small subwoofer. If the subwoofer is installed correctly and with the correct enclosure type, then the subwoofer can perform just the same or better than the big ones.
**Abt has a Vehicle Fit Guide
that will let you know which subwoofers will
best fit your car.