The Small Stack subwoofer was designed to be one of the most attractive and best performing 6.5" SUBwoofers on the market!
Don't be fooled by the size, the Small Stack is one monster of a mini subwoofer. The small size of the driver makes it the PERFECT candidate for under seat truck boxes. Easily fit two under the seat of your crew cab truck AND still have space for storage! OR jam 4-6 of these under your seat in a ported box and HOLD ON TO YOUR HATS! 
 
Size 6.5 Inches
RMS 200-400
Coil Size 2 inch 4 Layer High Temp
80oz FEA High Efficiency Motor Magnet
Non Pressed Pulp and Yellow Glass Fiber cone with Foam Surround
Impedance Dual 4 Ohm
Fs 50.195hz
Qms 3.187
Qes .516
Qts .444
Vas 3.290
Xmax 10.6
Mounting Depth 5.125 Inches
Cutout diameter: 5.95"
Suggested Enclosure: 
.4-.7 Cubic foot ported
7-9in squared  of port area per cubic ft 
34-38hz tuning recommended 
Not recommended for sealed enclosures