Subwoofer Diameter

• When comparing larger subwoofers to smaller subwoofers, diameter is a measurement that is usually used. The diameter of a subwoofer is the diameter of the cone. Subwoofers with a wider diameter are typically more expensive. While 10-inch and 12-inch subwoofers are common, the diameter size can range from 8 inches to over 20 inches.
  
  

Subwoofer Weight

• As subwoofer size increases, the weight of the subwoofer increases as well. The weight of a subwoofer, much like the diameter, can vary greatly. While the weight of a subwoofer is not an important issue for many, it should still be considered. Heavier subwoofers are difficult to move in and out of the car. Although many subwoofers weigh under 25 lbs., there are some that can weigh more than 350 lbs.
  
  

Subwoofer Power Requirements

• Larger subwoofers tend to need more powerful and more expensive amplifiers. When choosing a subwoofer amplifier combination, it is imperative to choose an amplifier that has a wattage output that is recommended by the subwoofer manufacturer. When installing a larger subwoofer inside of a car, the car battery may need to be updated as well.
  
  

Subwoofer Enclosure Volume

• As the size of subwoofers increases, the volume of the subwoofer enclosure in which it is installed must be increased as well. Some cars may be unable to accommodate the volume demands that large subwoofers require. Also, as the size of a subwoofer enclosure increases, the price tag does as well.
  
  

Sound Quality and SPL

• While sound quality and sound pressure level (SPL) varies from brand to brand, larger subwoofers tend to have lower sound quality but higher SPLs. The sound quality of a subwoofer refers to the clarity of the sounds created. Smaller subwoofers may have crisper, better quality sounds. Larger subwoofers can create extremely loud volume levels that smaller subwoofers cannot.