Pioneer 308D4 woofer info required

[Yuziq]

i searched a few times here in the forums but mostly threads are dead due to old model of this Subwoofer. hence i am posting a new, please forgive me if this question has been asked multiple times.
pioneer 308D4.
Ohm Rating: 2 or 8 ohm
Watts Nominal Power Handling: 400 Watts

Amplifier: AudioBahn a8002V

as per the specs of the amp:
2-channel car amplifier
200 watts RMS x 2 at 4 ohms (400 watts RMS x 2 at 2 ohms)
800 watts RMS x 1 bridged output at 4 ohms (4-ohm stable in bridged mode)

My Question:
Since this amp is giving 800w rms @4ohms in bridged mono. so can i connect my pioneer 308D4 sub in bridge for 400w rms @8ohms? since the increase in ohms from 4 to 8 will divide the rms output to 400w instead of 800w? will my woofer perform at its peak with best sound quality?

Below picture is from Amplifier's official manual:

Click to read more...

 

[DRBOOM]

Hey there. Your subwoofer specs as follows:

 

[DRBOOM]

Your subwoofers are dual 4 ohms. Consequently, you can wire each voice coil to each set of speaker terminals on your subwoofer amplifier.

 

[Yuziq]

Your subwoofers are dual 4 ohms. Consequently, you can wire each voice coil to each set of speaker terminals on your subwoofer amplifier.

ok , but why not i connect sub with above mentioned amplifier in bridge mode for 8ohms?