The new-style BP102-8 has an EBP of 74.
This is midway between the sealed box (EBP<=50) and vented box (EBP >= 100).
In short, this driver will swing either way. Link to BP102 Response
On paper, the tightest bass response always comes from a sealed box.
The audiophiles claim they can hear the difference... so up for debate.
If you notice the response bump for various sealed Qtc, you will see how box size affects the response.
The bump around 100 Hz is very "saleable" because it presents the illusion of big bass, at the expense of deep bass extension.
Note the steeper roll-off with the higher Qtc values.
The D2 (0.577) has the tightest bass response, and 0.99 has the highest power handling with most rapid fall off.
The B2 (0.707) produces the most area under the curve, plus an acceptable box size and power handling.
A solid sounding bass cab will have good response down to the 2nd harmonic of your bass.
If for low E (41 Hz) this is 82 Hz, and 64 Hz for a low B.
Notice that all the sealed BP102-8 are -3dB or less down to approximately 60 Hz.
These will do a nice job for electric bass.
Caveat: BP102-8 is a woofer.
It has a limited high frequency response, and will tend to sound "thuddy" compared to a brighter driver. Link to BP102 Datasheet
Caveat: BP102-8 is not a high efficiency (loud) driver.
These don't make a whole lot of noise per watt, so multiple drivers are required.
If you have a two-channel amp, you can run four in all-parallel wiring and make a good amount of noise.