Yah the speaker is designed to break up fast for
classic guitar tones, not great for anything above 20 to 30watts
Most likely the tiny sealed cabinet is not good for anything for bass use.
The Eminence Beta 12A2
can go in a sealed or ported cab. But would prefer a vented cab
or a large sealed.
relative low cost good performer for 1x12 practice amps
in the 60 to 80watt range.
As a 212 would have good performance with a 150 to 200 watt
head. Very similar to mid range to low cost drivers found in many factory 212's
in a 412 would out perform most 410's and have much more sensitivity