(08-28-2018) -For the car audio enthusiasts who need a subwoofer to blow the competition away; meet the SubZero. Handcrafted in the USA, the award winning SubZero is a competition grade subwoofer delivering in performance and appearance. Offered in three different sizes to suit a variety of installs, these subs move a tremendous amount of air (08-28-2018) -For the car audio enthusiasts who need a subwoofer to blow the competition away; meet the SubZero. Handcrafted in the USA, the award winning SubZero is a competition grade subwoofer delivering in performance and appearance. Offered in three different sizes to suit a variety of installs, these subs move a tremendous amount of air