SA Series 12" FEATURES AND SPECIFICATIONS: Dual 4-ohm Coils Available Depth = 6.5" Cut-Out = 11 1/8" Enclosure Suggestions: 1.75 ft^3 ported tuned to 30 Hz -- F3 of 26 Hz * Tune higher and use a smaller box for more SPL oriented setup (Use 1 - 1.5 cubes) * Enclosure can be as big as 2.25 ft^3 with lower power levels 1.00 ft^3 sealed -- F3 of 44 Hz * For SQ and space limited applications T/S D4: RE: 7.09 ohms (D4 in series) Fs: 28.4 Hz Qes: 0.511 Qms: 5.75 Qts: 0.469 Vas: 40.3 L BL: 25.04 NA Le: 7.7 mH Mms: 252 g BL^2 / RE: 88 750 watts RMS ** T/S Specifications measured with coils in series