Model: 328 Pioneer
PIONEER Slot Vent Ported Dual Sub Boxes 10"/12"
Dimensions & Specifications: 10" - 32.0"W x 13.50"H x 15.0"D 1.40 cu ft Air Space/Per Chamber Tuning - 38 Hz 12" - 34.5"W x 14.75"H x 15.0"D 1.85 cu ft Air Space/Per Chamber Tuning - 36 Hz