Sinbosenaudio FP20000Q FP22000Q power amplifier is connected to the speaker, how is the effect?

Today, Sinbosen used the FP20000Q FP22000Q power amplifier to test four dual 18-inch subwoofer S-218 +. It's really cool.

First of all, let us introduce the three main protagonists of the power amplifier today!
 

Sinbosenaudio FP20000Q Power Amplifier	Sinbosenaudio FP22000Q Power Amplifier	Sinbosenaudio S-218+ 18 inch subwoofer
Output Power: 8Ω Stereo Power (RMS): 2,250W X 4CH 4Ω Stereo Power (RMS): 4,000W X 4CH	Output Power: 8Ω Stereo Power (RMS): 2,500W X 4CH 4Ω Stereo Power (RMS): 4,650W X 4CH	Rated power: 1200W Peak Power：2400W Frequency response: 30Hz-250Hz Sensitivity: 100dB (1m/w) Rated impedance: 8Ω

Okay,  the most important point is coming! Let's see how it works!

FP20000Q FP22000Q connection four dual 18-inch subwoofer S-218+ test video!!!