Answer
There are actually many differences. The KS118 has the following:
- Nearly double the peak power with a 3600W Class D Amplifier (1800 W + 1800 W bridged)
- Custom-designed long excursion, tour-grade woofer with 4” voice coil
- More powerful DSP, offering improved amplifier and driver protection
- LCD display for advanced functionality and control
- Increased output (max SPL) and frequency response (LF extension)
- Cardioid mode settings for directional frequency deployment (requires two or more KS118 subs)
- Backing grille cloth (similar to K.2) for a clean, professional look
- Can be deployed both horizontally or vertically