Hi, I am want to attempt to make a bass guitar speaker. i have decided on a driver: the Eminence Kappa-15LF. Parameters: Impedance- 8 ohm Power Rating- 400W rms Resonance- 39Hz Usable Frequency Range- 35Hz - 3kHz Average Sensitivity- 1W @ 1m 101 dB Magnet Weight- 95oz. Gap Height- 0.375", 9.52mm Voice Coil Diameter- 3", 76.2mm Thiele-Small Parameters: Resonant Frequency 39Hz Impedance (RE) 5.4 ohm Coil Inductance (Le) 1.27 mH Electromagnetic Q (Qes) 0.41 Mechanical Q (Qms) 6.08 Total Q (Qts) 0.38 Compliance Equivalent Volume (Vas) 159 liters 5.6 cu.ft Peak Diaphragm Displacement Volume (Vd) 471cc Mechanical Compliance of suspension (Cms) 0.15mm/N BL Product (BL) 18.6 T-M Diaphragm Mass inc. Airload (Mms) 105 grams Equiv. Resistance of mech. suspension loss(Rms).28N*sec/N Efficiency Bandwidth Product (EBP) 97 Voice Coil Overhang (Xmax) 5.5mm Surface Area of Cone (Sd) 856.3cm2 Impedance at Resonance (Zmax) 86 ohm the question i have is sealed or vented??? the box can be 3 cu. ft. MAX. if it is sealed, do i stuff it, what does stuffing the box do? I want solid extension to 40Hz, lower is better but i can EQ some at 33Hz. my amp is rated 100 watts RMS. thanks in advance!!!