The woofer has no spec's. It might not produce deep bass sounds.
It has a low power rating for its size and has a small magnet.
The amplifier uses ICs from Tripath. But Tripath went bankrupt years ago. If an IC fails then where will you buy a replacement?
The datasheet shows only 45W into 4 ohms with a 28V supply. It might be able to produce horribly distorted squarewaves at 90W into 4 ohms. Into the 8 ohm woofer the power will be only about 25W to 30W.