Here are the specs. It is a passive sub with a crossover set a 200Hz and a low and high pass filter thru the speaker in and out connectors.

SPECIFICATIONS
Frequency Range .................................................. ............................29 Hz–200 Hz
Power Handling.......................................... .......................................100 Watts RMS
Maximum Power .................................................. ......................................200 Watts
Sensitivity .................................................. ...................................... 88 dB @ 2.83 V
Impedance .................................................. ...................................Nominal 8 Ohms
Speaker .................................................. ............................ 12-Inch, Dual Voice Coil
Crossover Frequency ............................................... 200 Hz with Built-In Crossover
(Low-Pass Crossover for Internal Speaker)
(High-Pass Crossover for External Primary Speaker Systems)
Connections .................................................. ...............................Push-In Terminals
Enclosure Type .................................................. ................................... Bass Reflex
Enclosure Finish .................................................. ...............Black Wood Grain Vinyl
Dimensions (HWD) ......................151/4 ¥ 17 ¥ 16 inches (38.3 ¥ 42.8 ¥ 40.2 cm)
Weight .................................................. ..............................................26 lb (11.7 kg)

Is this is a home system or a car? Do you have a different amp for the other speakers?

I believe these passive sub usually have a dual voice coil and you should run the mono power into both left and right channels on the sub.....I think.