Sub Help

[adrian42677]

I currently have a Polk DSW MicroPro 2000 that I paid very little for. I've had it for over 3 years. The specs are:

Driver Complement
Subwoofer
Quantity 1
Diameter 8" (20.32cm)
Type 8 inch x 8 inch quadrilateral bass radiator
Electrical
Total Frequency Response 22-200 Hz
Upper -3dB Limit 140 Hz kHz
Lower -3dB Limit 27 Hz
Inputs LFE, Line Level, Speaker Level, IR, AutoPRO Mic, 12 Volt Trigger
Outputs Line Level, Speaker Level
Amplifier Specs
Power Requirements (voltage) 120V or 240V (selectable)
220V Availability No
Amplifier Type Subwoofer
Continuous Power 1200 watts
Dynamic Power 2400 watts
Dimensions
Cabinet Dimensions
Height 12 5/8" (32.07cm)
Width 11" (27.94cm)
Depth 12 3/4" (32.38cm)
Product Weight (each) 34.00 pounds

I know the MicroPro is not a great sub for the retail price so you always have detractors due to the price. Again I didn't pay much for it so I'm sure I can make more from selling then I actually paid for it. Anyway, so when the sub reaches a low frequency in a movie, I hear a thudding, like it's being over worked. Audyssey didn't have an issues with the volume level set at half way during calibration and it is within 3db of 0 after Audyssey calibration, so I've never changed it. I also notice that my sub slides across the floor even though it sits on a sub riser (Aurelex?? <sp>). I do have hardwood floors and I know I can place a carpet sample or non-skid pad underneath to prevent that so I'm not too concerned.

My issue is whether this sub is even worth hanging on to or should I buy the BIC F12. I'm not looking to spend $$$. I don't know if the F12 is a better sounding sub or not. They carry it on BB.com through one of the other sellers so I can use my reward zone certificates on it and not pay out of pocket.