Pyramid PW1290-US 12″ Cast Frame Subwoofer Thiele/SmallPyramid PW1290-US 12″ Cast Frame Subwoofer Thiele/Small
Pyramid PW1290-US Thiele & Small Parameters Recommended for In-Car Use Ported Box 75 liters. F3=49Hz Ported Box 45 liters. F3=50Hz Ported Box 55 liters. F6=40Hz Ported Box 55 liters. F3=47Hz